A portion of the periodic table is shown below. Which column of elements would be most likely to chemically combine with sodium in a 1:1 ratio?
Answers
Step-by-step explanation:
chlorine cl when combines with sodium na
Nacl will form so chlorine
Related Questions
marcy drew a scale drawing of a petting zoo. the goat pen, which is 9 meters wide in real life, is 15 centimeters wide in the drawing. what is the scale of the drawing?
Answers
Answer:
1 cm = 0.6 m.
Step-by-step explanation:
15 cm to 9 meters
= 15 cm to 900 cm
so 1cm = 900/15 cm
1cm = 60cm
1 cm = 0.6 m.
Order the square root of 70, negative 8.2 repeating, twenty five thirds, and negative eight and four sevenths from least to greatest.
negative eight and four sevenths, negative 8.2 repeating, square root of 70, twenty five thirds
negative eight and four sevenths, negative 8.2 repeating, twenty five thirds, square root of 70
negative 8.2 repeating, negative eight and four sevenths, twenty five thirds, square root of 70
negative 8.2 repeating, negative eight and four sevenths, square root of 70, twenty five thirds
Answers
The order from least to greatest is -8.222 <-7.43 < 8.333 < 8.366
The numbers given are:
The square root of 70 =√70 = 8.366
Negative 8.2 repeating = -8.222
Twenty five thirds = 25/3 = 8.333
Negative eight and Four sevenths = -8 and 4/7 = (-52)/7 = -7.43
So from least to greatest,
-8.222 <-7.43 < 8.333 < 8.366
That is, Negative 8.2 repeating < Negative eight and Four sevenths < Twenty five thirds < The square root of 70
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The profit Mrs. Kelly makes from making and selling x pairs of earrings is represented by
10−(2+23)
10x − (2x + 23). Which expression is equivalent?
Group of answer choices
8 - 23
8x− 23
−15 − 15
x 31 31
8+23
Answers
Answer:
8x-23
Step-by-step explanation:
10x-2x=8x, and since the 23 was in the parenthesis that was being subtracted, then the 23 gets subtracted.
Please help with work/explanation thank you
Answers
Answer: y = xw/v
Step-by-step explanation:
v = ( 1/y )*xw
⇒ y = xw/v
PLEASE ANSWER,,,, 30 POINTS,,,, BRAINLYIEST !!!! ||||||||||||| The dot plot below shows the number of different types of trees in Seth's garden:
A straight line is shown with 4 equidistant marks. The first mark is labeled Redbud, the second mark is labeled Magnolia, the third mark is labeled Snowbell, and the fourth mark is labeled Maple. The first mark has 1 dot, the second mark has 5 dots, the third mark has 2 dots, and the fourth mark has 3 dots. Below the line is written Number of Trees
Which table shows the data displayed in the dot plot?
A). Garden Trees Number
Redbud 0
Magnolia 4
Snowbell 1
Maple 2
B). Garden Trees Number
Redbud 1
Magnolia 5
Snowbell 2
Maple 3
C). Garden Trees Number
Redbud 1
Magnolia 6
Snowbell 7
Maple 10
D). Garden Trees Number
Redbud 3
Magnolia 2
Snowbell 5
Maple 1
Answers
Answer: B
Step-by-step explanation:
Only makes sense its the same as the question I might be wrong
4. Juan has 28 paperback books that measure
re 1 1/4 inches each, how many books will fit on one
shelf if each shelf measures 30 inches?
Answers
Answer:
24 books can fit on 1 shelf.
Step-by-step explanation:
Question: Juan has 28 paperback books that measure 1 and 1/4 inches each. How many books will fit on one shelf if each shelf measures 30 inches?
Step-by-step:
We know that each book is 1 and 1/4 inches each. It might be easier to convert the fraction into a decimal.
1/4 inches is 1 divided by 4 which equals to 0.25 inches
1 inch + 0.25 inches = 1.25 inches
so, 1 and 1/4 inches = 1.25 inches
To find out how many books fit on a shelf, we need to find: length of 1 bookshelf divided by length of 1 book
We know that one bookshelf is 30 inches and 1 book is 1.25 inches
so, 30/1.25 or 30 divided by 1.25 = 24
Therefore, 24 books can fit on 1 shelf.
in a chemistry class, 8 liters of a 4% acid solution must be mixed with a 10% acid solution to get a 6% acid solution. how many liters of the 10% acid solution are needed?
Answers
There are 4 liters of solution are needed for the 10% acid solution.
Unitary method:
Unitary method is the way to find the value of a single unit and then multiply the value of a single unit to the number of units to get the necessary value.
Given,
In a chemistry class, 8 liters of a 4% acid solution must be mixed with a 10% acid solution to get a 6% acid solution.
Here we need to find how many liters of the 10% acid solution are needed.
First, we have to convert the percentage into decimal,
4% = 4/100 = 0.04
10% = 10/100 = 0.10
6% = 6/100 = 0.06
Let x be the required liter of solution.
So, based in the given details,
We have to write the equation as,
=> 0.04*8 + 0.10x = 0.06(8+x)
=> 0.32 + 0.10x = 0.48 + 0.06x
=> 0.10x - 0.06x = 0.48 - 0.32
=> 0.04x = 0.16
=> x = 0.16/0.04
=> x = 4
x = 4 liters of 10% solution is used.
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what’s the answer? i need it asaappapapapapapa
Answers
By reading the given graph, we conclude that:
-8*f(1) - 4*g(4) = -8
How to get the wanted value?
Here we have two graphed functions, f(x) which is the blue one, and g(x) which is the purple one.
We want to find the value of:
-8*f(1) - 4*g(4)
So first we need to find the values of f(1) and g(4), and to do that, we need to use the given graphs.
On the graph we can see that:
f(1) = -2
g(4) = 6
Replacing that in the expression we get:
-8*f(1) - 4*g(4) = -8*-2 - 4*6 = 16 - 24 = -8
Then, by reading the given graph, we conclude that:
-8*f(1) - 4*g(4) = -8
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Keith has a credit card balance of $732. he cannot pay the whole amount due, so he pays the minimum of $75. after the minimum amount has been deducted from the $732 balance, he is charged 1.2% (or .012) fee. what will his balance be next month if he doesn't make any additional charges? if necessary, round your answer to 2 decimal places.
Answers
Keith credit card balance by next month is $664.88 if he doesn't make any additional charges
Information about the problem:
Total balance = $732Minimum paid = $75Charge fee = 1.2%Final balance =?Calculating the amount he could not pay, we have:
Amount to pay= Total balance - minimum paid
Amount to pay= $732 - $75
Amount to pay= $657
Calculating the final balance he will pay:
Final balance = Amount to pay + (amount to pay * Charge fee/100)
Final balance = $657 + ($657 * 1.2/100)
Final balance = $657 + ($657 * 0.012)
Final balance = $657 + ($7.884)
Final balance = $664.88
What is a percentage?Percentage is defined as the number that represents a ratio of a total that is divided by 100 equal parts. It is represented by the symbol %.
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Solve x in terms of y
Y=6x
Answers
Answer:
Y/6 = x
Step-by-step explanation:
Y = 6x
Y/6 = x
Which pattern below shows an arithmetic sequence with a third term of 8 and a constant difference of 5?
Answers
Answer:
Step-by-step explanation:
M is the midpoint of segment JK. The coordinate of J are (-4, 7) and the coordinates of M are (2, 5). Find the coordinates of K.
Answers
The coordinates of K are (8,3).
There is a line segment JK with M as its midpoint. This means the length of JM = length of MK.
Also the coordinates of J is (-4,7) and the coordinates for M are (2,5).
As M is the midpoint, the x-distance and y-distance between (-4,7) and (2,5) are same as that between (2,5) and K.
x- distance between (-4,7) and (2,5) = 2- (-4) = 6
So x- coordinate of K = 2+6 = 8
y-distance between (-4,7) and (2,5) = 5-7 = -2
So y-coordinate of K = 5+(-2) = 3
Hence the coordinates of K are (8,3).
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What is the inequality that matches the graph?
Answers
Answer:
x ≥ 1
Step-by-step explanation:
The number line shows that the dot is closed which means that the number it is on, is one of the solutions that works for the inequality. So x stands for/means that any number greater than 1 or equal to 1 is a solution.
Help needed! This shouldn't be too difficult...
Answers
Answer:
2.62 x 10^16
Step-by-step explanation:
Step-by-step explanation:
Let look at the numerator:
(3.1 x 10^6)(6.97 x 10^4)
= (3.1 x 6.97) x 10^(6+4)
= 21.607 x 10^10
So 21.607 x 10^10
_______________
8.245 x 10^-6
= (21.607/8.245) x 10^(10 - -6)
= 2.62 x 10^(10 + 6)
= 2.62 x 10^16
I hope this helps
Answer:2.62061855 x 10^16
Step-by-step explanation:
pleas help quick as possible,
" Lara's drink coaster has a diameter of 6 centimeters. What is the coaster's circumference?
Use 3.14 for ." Thank you
Answers
Answer: 18.84 cm
circumference = 2πr, where r is the radius.
radius is half of the diameter.
6/2 = 3 so radius is 3
2x3.14x3= 18.84 cm
hope it helps.
An uncle wills $3000 to his two nieces and one nephew. The older niece is to receive twice what the younger niece receives, and the nephew is to receive an amount equal to the sum of the nieces' amounts. How much will each person receive?
Answers
Answer:
See Explanation
Step-by-step explanation:
So, the uncle has $3000.
The Oldest Niece gets double what the Younger Niece gets half her amount. The nephew gets the total of these 2 combined.
The Youngest Niece gets $500.
500x2=1000
The Oldest Niece gets $1000.
1000+500=1500
The Nephew gets $1500.
1500+1000+500=3000
What is the next fraction in this sequence?Simplify your answer.
1/2, 4/7, 9/14, 5/7,....
Answers
Answer:
Step-by-step explanation:
[tex]\displaystyle\\\frac{1}{2},\ \ \frac{4}{7},\ \ \frac{9}{14},\ \ \frac{5}{7} ,\ \ ... \\\\\frac{1*7}{2*7} ,\ \ \frac{4*2}{7*2} ,\ \ \frac{9}{14}, \ \ \frac{5*2}{7*2} ,\ \ ...\\\\\frac{7}{14},\ \ \frac{8}{14} , \ \ \frac{9}{14},\ \ \frac{10}{14},\ \ \frac{11}{14},\ \ ...,\ \ \frac{6+n}{14} , \ \ n=1,\ 2,\ 3,\ ...[/tex]
How to find the gradient of the straight lines? I don’t want direct answer, I want explanation please. I’m confused how can I find the x and y axis
Answers
Answer:
Question 27
[tex]\textsf{(a)} \quad -\dfrac{6}{5}[/tex]
[tex]\textsf{(b)} \quad \dfrac{1}{10}[/tex]
[tex]\textsf{(c)} \quad \dfrac{4}{5}[/tex]
Question 28
[tex]\textsf{(a)} \quad \dfrac{6}{0}=\textsf{und\:\!efined}=\textsf{no gradient}[/tex]
[tex]\textsf{(b)} \quad -\dfrac{3}{10}[/tex]
[tex]\textsf{(c)} \quad \dfrac{3}{10}[/tex]
Step-by-step explanation:
The gradient of a straight line can be found by dividing the difference in the y-coordinates by the difference in the x-coordinates between two points on the line.
A positive gradient slopes up from left to right.
A negative gradient slopes down from left to right.
[tex]\boxed{\begin{minipage}{4.3cm}\underline{Gradient Formula}\\\\$m=\dfrac{y_2-y_1}{x_2-x_1}$\\\\where $(x_1,y_1)$ and $(x_2,y_2)$ \\are two points on the line.\end{minipage}}[/tex]
We can use the formula to find the gradients, or we can simply calculate the change in y and change in x by looking at the graph.
Example:
If we take line (a) from question 27 as an example.
The change in y from the beginning to the end of the line is 6 units.The change in x from the beginning to the end of the line is 5 units.The line slopes down, so the gradient is negative.Therefore, the gradient is -6/5.
Using the gradient formula, define two points on the line:
Let (x₁, y₁) = (0, 6)Let (x₂, y₂) = (5, 0)Input the points into the formula:
[tex]\textsf{Gradient}=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{0-6}{5-0}=-\dfrac{6}{5}[/tex]
Solutions
Question 27
(a) The gradient is -6/5, as calculated above.
(b) The change in y is 1 unit and the change in x is 10 units. The line slopes up so the gradient is positive. Therefore, the gradient is 1/10.
(c) The change in y is 4 units and the change in x is 5 units. The line slopes up so the gradient is positive. Therefore, the gradient is 4/5.
Question 28
(a) The change in y is 6 units and the change in x is 0 units. Therefore, the gradient is undefined since anything divided by 0 is undefined. Therefore, this line has no gradient.
(b) The change in y is 3 units and the change in x is 10 units. The line slopes down so the gradient is negative. Therefore, the gradient is -3/10.
(c) The change in y is 3 units and the change in x is 10 units. The line slopes up so the gradient is positive. Therefore, the gradient is 3/10.
Attachment
I have marked the change in y (green) and the change in x (blue) for line (c) on both graphs.
Sophia borrowed $11,020 at 4% simple interest for 10 months. How much will the interest amount
to? What is the total amount that she will have to pay back at the end of 10 months? Round
answers to the nearest cent if necessary.
Answers
The total amount that she will have to pay back at the end of 10 months is $11,385.864.
We have Sophia .who borrowed $11,020.
We have to determine the total amount that she will have to pay back at the end of 10 months.
What is the formula to calculate the Simple Interest ?The Simple interest can be calculated using the formula -
S.I. = (P x R x T)
where -
P = Principle amount
R = Rate of interest
T = time in years
According to the question -
P = $11020
R = 4%
T = 10 months = 0.83 years
Therefore -
Interest = (P x R x T) = (11020 x 0.04 x 0.83) = $365.864
Now -
Interest = Total amount - Principle
Total Amount = Interest + Principle = 11020 + 365.864 = $11,385.864
Hence, the total amount that she will have to pay back at the end of 10 months is $11,385.864.
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What method can be used to write the equation of a line in slope-intercept form given two points? Find the slope using the formula m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction, and then substitute one point and the slope into the equation y = m x + b to find the y-intercept. Find the slope using the formula m = StartFraction x 2 minus x 1 Over y 2 minus y 1 EndFraction, and then substitute one point and the slope into the equation y = m x + b to find the y-intercept. Find the y-intercept using the formula m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction, and then substitute one point and the y-intercept into the equation y = m x + b to find the slope. Find the y-intercept using the formula m = StartFraction x 2 minus x 1 Over y 2 minus y 1 EndFraction, and then substitute one point and the y-intercept into the equation y = m x + b to find the slop
Answers
The method that can be used to write the equation of a line in slope-intercept form given two points is A. Find the slope using the formula m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction, and then substitute one point and the slope into the equation y = m x + b to find the y-intercept.
How to illustrate the information?It should be noted that the equation of line passing through two point = y = mx + b.
Also, b can find out via putting values of x, y, and m in the equation of the line to get y-intercept.
In this case, the slope of the line will be y2 - y1/x2 - x1.
In conclusion, the correct option is A.
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Your friend and your cousin discuss measuring with a ruler. Your friend says that you must always line up objects at the zero on a ruler. Your cousin says it does not matter. Who is correct, and why?
friend; A measurement always starts with a value of zero.
friend; A ruler does not match numbers one to one unless the measurement starts at zero.
cousin; you can choose any number for the start of the object and any number for the end.
cousin; The distance is the absolute value of the difference of the numbers lined up with the beginning and the end of the object.
Answers
The correct option is the last one:
"Cousin; The distance is the absolute value of the difference of the numbers lined up with the beginning and the end of the object."
Who is correct, your friend or your cousin?
Now, remember that a rule is equivalent to a number line.
Now, suppose that you are measuring an element with a length of 16 centimeters.
If you measure it by lining up one of the ends of the element with the zero, then the other end will be at the line number 16.
And if you line it up from a different number, let's say 3cm, then the other end of the object (which still measures 16cm) will be at 19cm.
In both cases, to find the measure of the object that you are measuring with the ruler, you need to find the difference between the two numbers on the ruler that line up with the object ends.
If you line up with the zero, you need to subtract zero, so the measure is easier:
16cm - 0cm = 16cm
If you line up with other number, like the 3 in this case, you need to perform the subtraction:
19cm - 3cm = 16cm
In both cases, we will get the same measure. So your cousin is correct, and the correct option is the last one:
Cousin; The distance is the absolute value of the difference of the numbers lined up with the beginning and the end of the object.
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Sara is 5 years younger than Geoff. What is an equation that relates the age of Sara S and the age of Geoff G?
Answers
The equation that relates the ages is as follows:
G = S + 5
How to find equation to relate ages?Sara is 5 years younger than Geoff.
The equation that can be used to relates the age of Sara S and the age of Geoff G is as follows:
where
G = age of GeoffS = age of SarahTherefore, Sarah is 5 years younger than Geoff.
The equation that relates the ages is as follows:
G = S + 5
Therefore, Geoff is 5 years older than Sarah. In other words, Sarah is 5 years younger than Geoff.
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Soua read 8 pages in 3 minutes. if she keeps reading at this pace, how many pages will she read in 10 minutes? round Ur answer to the nearest tenth.
Answers
Answer:
Step-by-step explanation:
e
The number of pages read by Soua in 10 minutes are 26.7 pages.
It is given in the question that Soua can read 8 pages in 3 minutes.
We have to find the number of pages that she will she read in 10 minutes.
We will use the unitary method for this question.
The method by which we find out the value of one unit and further use it to find the value of multiple units is known as the unitary method.
Pages read by Soua in 1 minute = 8/3 pages
Hence, we can write,
Pages read by Soua in 10 minutes = 10*(8/3) = 80/3 pages = 26 and(2/3) pages = 26.667 pages ≈ 26.7 pages.
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If someone leave a 20% tip and the meal is 35$how much was the tip
Answers
Answer:
$7
Step-by-step explanation:
Since 100/20 = 5, 20% is 1/5, so 20% of 35 is 35/5, or 7
Answer:
If someone leave a 20% tip and the meal is 35$how much was the tip :
$35.00 ÷ 20% = $7.00
the product of 5 minus 6 has a result of 24
Answers
The expression for the phrase is 5 * (x - 6) = 24
How to write an expression for the phrase?The phrase is given as:
the product of 5 minus 6 has a result of 24
Products means *
So, we have
5 * (x minus 6) has a result of 24
x minus 6 means x - 6
So, we have
5 * (x - 6) has a result of 24
has a result of 24 means = 24
So, we have
5 * (x - 6) = 24
Hence, the expression for the phrase is 5 * (x - 6) = 24
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A car valued at $20,000 depreciates at a rateof 2% during the first 5 years, then at a rateof 2.5% every year after that. What will thecar’s value be after 10 years?)
Answers
Answer:
$15928.81
Step-by-step explanation:
hope this works
2000 x (0.98)^5 = ans
ans x (0.975)^5 = 15928.81442 which rounds to $15928.81
3. Check for Reasonableness Two students are
asked to write an equivalent algebraic expression
for (5v-3)2. Chen writes the equivalent algebraic
expression as 25v-6. Mia writes the equivalent
25 Who is correct?
algebraic expression as
V6
Answers
None of Chen and Mia have got the solution right for the given expression.
It is given that two students are asked to write an equivalent expression for (5v - 3 ) × 2.
We have to find out that which of the both students have got it correct ?
What is algebra ?
Algebra is the branch that deals with various symbols and the arithmetic operations such as addition , division , etc.
As per the question ;
The expression is (5v - 3 ) × 2.
Let's solve this equation to find out who of Chen and Mia is correct.
So ;
(5v - 3) × 2
= (5v × 2) - (3 × 2)
= 10v - 6
So ; None of Chen and Mia is correct.
Thus , none of Chen and Mia have got the solution right for the given expression.
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Answer: Both Chen, and Mia are correct.
Step-by-step explanation:
The expression they gave us:
(5v^-3)^2.
Mia: 25/v^e
Chen: 25v^1
Now,
5v^-3)^2
Step 1: (5v^-3).= (5^2)v^3x2
Step 2: (5x5)v^3x2=25v^3x2
Step 3: 25v^-6. As you see Chen is correct. But..
Step 4: 25/1 x 1/v^6= 25/v^6
That also makes Mia to be correct.
So, in this problem there are two answers.
= 25v^-6, and 25/v^6.
Write in point slope form an equation of the line through the pair of points.
(9,8) and (6,1)
________________________________________________
What is an equation of the line in point-slope form? Show your work.
A.) y - 8 = -7/3(x - 9)
B.) x - 8 = 7/3(y - 9)
C.) y = -7/3x - 13
D.) y - 8 = 7/3(x-9)
Answers
Answer:
d) y - 8 = 7/3(x - 9)
Explanation:
[tex]\sf point-slope\:form :[/tex]
[tex]\sf y - y_1 = m(x - x_1) \ \ where \ (x_1, y_1), \ (x_2, y_2) \ are \ points \ and \ m \ the \ slope[/tex]
Find the slope:
[tex]\sf slope: \dfrac{y_2 - y_1}{x_2- x_1} \ \ where \ (x_1 , \ y_1), ( x_2 , \ y_2) \ are \ points[/tex]
[tex]\sf \rightarrow slope\ (m) : \dfrac{1-8}{6-9} = \dfrac{-7}{-3} = \dfrac{7}{3}[/tex]
Find the equation:
in point slope form:
[tex]\sf y - 8 = \dfrac{7}{3} (x - 9)[/tex]
[tex]\sf y = \dfrac{7}{3} x - 21+8[/tex]
in slope intercept form
[tex]\sf y = \dfrac{7}{3} x -13[/tex]
Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form.
Answers
Answer:
[tex]\frac{4}{5}[/tex]
Step-by-step explanation:
Question Progress
Homework Progress
24 / 63 Marks
a) Work out the value of (15)*× (√3)?
x
b) Work out the value of (19) × (√30) ?
x
1 14
豐
54%
Answers
Answer:
(a) 15
(b) 270
Step-by-step explanation:
Part (a)Given expression:
[tex]\left(\sqrt{5}\right)^2 \times \left(\sqrt{3}\right)^2[/tex]
[tex]\textsf{Apply the exponent rule}:\quad \left(\sqrt[n]{a}\right)^n=a,\quad \textsf{$n$ is odd or $a \geq 0$}[/tex]
[tex]\implies 5 \times 3[/tex]
Multiply the numbers:
[tex]\implies 15[/tex]
Part (b)Given expression:
[tex]\left(\sqrt[3]{9} \right)^3 \times \left(\sqrt{30}\right)^2[/tex]
[tex]\textsf{Apply the exponent rule}:\quad \left(\sqrt[n]{a}\right)^n=a,\quad \textsf{$n$ is odd or $a \geq 0$}[/tex]
[tex]\implies 9 \times 30[/tex]
Multiply the numbers:
[tex]\implies 270[/tex]
Now we have to,
→ work out the value for the following.
We know that,
→ square ( ²) and square root (√) gets cancelled each other.
→ cube ( ³) and cube root (³√) gets cancelled each other.
a) (√5)² × (√3)² = ?
→ (√5)² × (√3)²
→ 5 × 3 = 15
Thus, the answer is 15.
b) (³√9)³ × (√30)² = ?
→ (³√9)³ × (√30)²
→ 9 × 30 = 270
Thus, the answer is 270.