The statement is false, a counterexample is given by using the numbers 1 and -1.
How to find the counterexample?Here we have the statement:
"The sum of two numbers is always greater than their difference"
So we just need to find two numbers such that the statement is false.
This is really trivial, for example, we can propose the numbers 0 and 0.
The sum gives 0 + 0 = 0
The difference is 0 - 0 = 0
The sum is not greater than the difference.
Now, I will propose a less trivial counterexample, let's use the numbers 1 and -1.
The sum gives 1 + (-1) = 1 - 1 = 0
The difference gives: 1 - (-1) = 1 + 1 = 2
The difference is larger than the sum, so we found a counterexample for the given statement.
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[tex]\frac{-9}{5}+ \frac{7}{2}[/tex]
Answer:
exact form: 17/10
decimal form: 1.7
mixed number form: 1 7/10
Step-by-step explanation:
Can y’all please help me on question 23 please
Answer:
x<-5/4 or x>2
Step-by-step explanation:
-4x -11 > 5
+11 +11
-4x>5
/ /
-4 -4 Switch the sign when divided by a negative.
x<-5/4
8x - 7 > 9
+7 +7
8x>16
/ /
8 8
x>2
What is the equation of a line that contains the points (5, 0) and (5, −2)?
a) x = 5
b) x = 0
c) y = 0
d) y = 5
Thank you!
The equation of the line is x = 5
How to find the equation of a line?The equation of a line can be represented in slope intercept form as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, let's find the slope and y-intercept
(5, 0)(5, - 2)
m = -2 - 0 / 5 - 5
m = -2 / 0
m = infinity
Hence, It is a vertical line, since the x is the same for both of them, and it is equal to both times.
Therefore, the equation of the line is x = 5
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he first step in simplifying the expression: (1.8 x 10^5) - (2.6 x 10^3)
a
Addition and subtraction requires the terms to be "like terms" with the same power of the base 10, so you would need to change the second number to (0.026 x 10^5).
b
Addition and subtraction do not require any changes, so you would just subtract (2.6 - 1.8) and (10^(5-3))
c
Addition and subtraction do not require any changes, so you would just subtract (1.8 - 2.6) and (10^(5-3))
d
Addition and subtraction requires the terms to be "like terms" with the same power of the base 10, so you would need to change the second number to (2600 x 10^5).
Using scientific notation, the first step in simplifying the expression is given by:
a. Addition and subtraction requires the terms to be "like terms" with the same power of the base 10, so you would need to change the second number to (0.026 x 10^5).
What is scientific notation?A number in scientific notation is given by:
[tex]a \times 10^b[/tex]
With the base being [tex]a \in [1, 10)[/tex].
For two numbers in scientific notation to be added or subtracted, they need to have the same exponent, which removes options b and c.
Moving the second number for 10^3 to 10^5 would be equivalent to a multiplication by 100, hence we have to divide by 100 at the base, that is:
2.6 x 10^3 = (2.6/100) x 10^5 = 0.026 x 10^5.
Hence option a is correct.
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The temperature in Anchorage,Alaska, dropped over four consecutive hours from 0 to -44F. If the temperature dropped the same amount each hour, how much did the temperature change each hour?
The temperature change in Anchorage,Alaska, each hour is; -11°F per hour
What is the rate of change of the temperature?When we talk of rate of change with respect to two values, we simply mean the rate of change of the output value with respect to the input value.
Now, we are told that the temperature went from 0°F to -44°F over a four hour period. Thus;
Rate of change = Change in temperature/change in time
Thus;
Rate of change = (-44 - 0)/(4 - 0)
Rate of change = -44/4
Rate of change = -11°F per hour
The temperature change in Anchorage,Alaska, each hour is; -11°F per hour
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resolver esto
2x - 3y = 7
4x + y = 7
Ayuda es para hoy ;-; si t sale el resultado deben de cambiarlo y ver si salio ;-;
f(x)= 4x - 2
find x if f(x)=2
Answer:
1
Step-by-step explanation:
a) Flip the equation
4x - 2 = 2
b) Add 2 to both sides
4x - 2 + 2 = 2 + 2
4x = 4
c) Divide both sides by 4
4x/4 = 4/4
x = 1
ya Williams-
set to the inequality
Solve the inequality.
-1.5(4x+1) > 45-25(x+1)
1. For parentheses:
Distribute
2. If necessary:
Combine Terms
3. Apply properties:
Add
Multiply
Subtract
Divide
4. To start over:
Reset
English
V
KE'NAIYA
The solution to the inequality using William's template is x > 21.5/19
How to determine the solution to the inequality using William's template?The inequality expression is given as
-1.5(4x + 1) > 45 - 25(x + 1)
For parentheses: Distribute
So, we have
-6x - 1.5 > 45 - 25x - 25
2. If necessary: Combine Terms
So, we have
19x > 21.5
3. Apply properties: Divide both sides by 19
x > 21.5/19
Hence, the solution to the inequality using William's template is x > 21.5/19
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HELP!!!!!!!!!!!!! 30 points that is all my points
1) Unit Rate of the given options are;
$0.05 for 1 ounce
24 bottles per case
16 ounces per bottle
2) Rate of the given options are;
5 bottles for $5
$1 per 16 ounces
What is the Unit Rate?A unit rate (or unit ratio) describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. For example, if you ran 70 yards in 10 seconds, you ran on average 7 yards in 1 second.
Meanwhile, a rate is the ratio between two different units of measure.
Thus;
1) Unit Rate of the given options are;
$0.05 for 1 ounce
24 bottles per case
16 ounces per bottle
2) Rate of the given options are;
5 bottles for $5
$1 per 16 ounces
3) The option that is neither a unit rate nor a rate is; 36 bottles
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Answer the 2 questions in photo [ Brainliest + 20 points ]
( you don’t have to answer both just at least one of them please)
(a) The marked price of a bicycle is Rs 2,000. If the shopkeeper allows some discount and a customer bought it for Rs 1921 including 13% VAT, how much amount was given as the discount?
The amount of the discount that was given is $300.
What is the discount given?A discount reduces the price of an item. When a discount is given, the item becomes cheaper. VAT is value added tax. VAT increases the price of an item.
The equation that can be used to represent the total cost of the bicycle is:
Total cost after VAT and discount = (1 + VAT) x (marked price - discount)
1921 = (1 + 0.13) x (2,000 - d)
1921 = 1.13 x (2,000 - d)
In order to determine the value of discount, take the following steps:
Divide both sides of the above equation by 1.13
1921 / 1.13 = 2000 - d
1,700 = 2,000 - d
Combine similar terms: 2000 - 1700 = d
Add similar terms together: d = 300
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In ΔOPQ, o = 1.2 inches, p = 3.2 inches and ∠Q=37°. Find the area of ΔOPQ, to the nearest 10th of a square inch.
The next model of a sports car will cost 4.6% more than the current model. The current model costs $34,000. How much will the price increase in dollars? What will be the price of the next model?
Based on the price of the current model of a sports car, the price increase for the next model will be $1,564
The price of the next model of the sports car will be $35,564.
How to find the price?The increase in price in dollar terms for the next model of the sports car can be found by the formula:
= Current cost of current model x Price increase in percentage
= 34,000 x 4.6%
= $1,564
The price of the next model is therefore:
= Current price of current model + Price increase
= 34,000 + 1,564
= $35,564
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2. Why does this
equation have no
solutions?
3(4x12) = 2(6x + 8)
The equation 3(4x + 12) = 2(6x + 8) has no solution because the variable x was neglected as it equals 0.
How to calculate the value?It should be noted that the equation given is illustrated as:
3(4x + 12) = 2(6x + 8)
Open the parentheses
12x + 36 = 12x + 16
Collect like terms
12x - 12x = 16 - 36
0 = -20
Therefore, it has no solution.
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Which is equivalent to the fraction represented by point M on the number line?
From the calculation below, the equivalent to the fraction represented by point M on the number line is [tex]\frac{1}{4}[/tex].
How do we determine the fraction equivalent?On the number line, it can be observed that there are eight points starting from the first point after 0 up to 1.
Since M is on the second point on the number line, we can have:
P = Point at which M is located on the number line = 2
T = Total number of points on the number line = 8
Therefore, we have:
[tex]M =\frac{P}{T}[/tex]
[tex]M=\frac{2}{8}[/tex]
[tex]M =\frac{1}{4}[/tex]
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4) Mr. Carter loves underwater diving. His house
boat is 250 feet above sea level. After jumping from
that level, he ended up at 650 feet below sea level.
What was the total distance that Mr. Carter traveled
from his boat to where he ended up?
Answer:
he traveled 900 feet
Step-by-step explanation:
250 + 650 = 900
Mr. Carter traveled a total distance of 900 feet from his boat to where he ended up.
Here, we have to find the total distance that Mr. Carter traveled from his boat to where he ended up, we need to calculate the sum of the distances above and below sea level.
The distance above sea level is 250 feet (his house boat's level), and the distance below sea level is 650 feet (where he ended up after jumping).
Total distance traveled = Distance above sea level + Distance below sea level
Total distance traveled = 250 feet + 650 feet
Total distance traveled = 900 feet
Mr. Carter traveled a total distance of 900 feet from his boat to where he ended up.
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for each positive integer $n$, the mean of the first $n$ terms of a sequence is $n$. what is the $2008^{\text{th}}$ term of the sequence?
B(4015) is the [tex]2008^{th[/tex]term of the sequence.
What is the sequence?
A sequence is an enumerated group of particulars in mathematics where reiterations are permitted and order is important. analogous to a set, it has members( also called rudiments, or terms). The length of the series is the number of rudiments( potentially horizonless). A list of particulars in a particular order, generally figures, is called a sequence.Since the mean of the first terms is, the sum of the first terms is n². Thus, the sum of the first 2007 terms is 2007² and the sum of the first 2008 terms is 2008² Hence, the 2008th term of the sequence is
2008² - 2007² = (2008 + 2007) (2008 - 2007) = 4015
Note that n² is the sum of the first n odd integers.
From inspection, we see that the sum of the sequence is n². We also notice that n² is the sum of the first n odd integers.
Because 4015 is the only odd integer, B is the answer.
B(4015) is the [tex]2008^{th[/tex]term of the sequence.
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A store sells a package of 50 paper plates for $2.50 and a package of 80 paper plates for $4.00. Which of the following statements is correct? Multiple choice question. A) The unit prices are the same. B) The package of 50 paper plates has the lower unit price. C) The package of 80 paper plates has the lower unit price. D) The package of 50 paper plates has the higher unit price.
Answer:
A) The unit prices are the same.
Step-by-step explanation:
First convert dollars to cents to make the calculation easier
Package of 50 paper plates costs $2.50
$2.50 = 2.50 x 100 = 250¢
So the unit price, which is the price per paper plate = 250/50 = 5¢
Package of 80 paper plates costs $4.00
$4.00 = 4.00 x 100 = 400¢
So the unit price, which is the price per paper plate = 400/80 = 5¢
So the unit prices of both packages are the same
find the rise and the run
Answer:
Rise is 4
Run is 5
Slope is 4/5
Step-by-step explanation:
The 2 points on the line (4,-3) and (9,1)
Rise is 4
Run is 5
Slope is 4/5
WILL GIVE BRAINLIEST need help asap
What will be the location of the y value of R' after using the translation rule (x + 4, y - 7), if the pre-image R is located at ( -17, -3)
The location of the y value of R' after using the translation rule is -10
What will be the location of the y value of R' after using the translation rule?The translation rule is given as:
(x + 4, y - 7)
The pre-image of R is located at (-17, -3)
Rewrite as
R = (-17, -3)
When the translation rule is applied, we have:
R' = (-17 + 4, -3 - 7)
Evaluate
R' = (-13, -10)
Remove the x coordinate
R'y = -10
Hence, the location of the y value of R' after using the translation rule is -10
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A sidewalk that is 2 ft wide surrounds a rectangle that is 4 ft by 6 ft what's the area of the sidewalk in square feet
The area of a sidewalk that surrounds a rectangle of 4 ft by 6 ft is 56 ft²
The given situation can be depicted in the attached picture.
Recall the formula to calculate the area of a rectangle:
A = l ⨉ w
Where:
l = length
w = wide
In the attached picture, the area of the sidewalk is the one with green color.
Notice that:
Area of sidewalk = area of bigger rectangle – area of smaller rectangle
Parameters of the bigger rectangle:
l = 6 + 2 + 2 = 10 ft.
w = 4 + 2 + 2 = 8 ft.
Area of bigger rectangle = 10 x 8 = 80 ft²
Parameters of the smaller rectangle:
l = 6 ft.
w = 4 ft.
Area of bigger rectangle = 6 x 4 = 24 ft²
Hence,
Area of sidewalk = 80 - 24 = 56 ft²
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21. The cost to mail a package is $5.00. Brian has postcard stamps that are worth $0.34 each and first class
stamps that are worth $0.49 each.
If Brian puts 7 first class stamps on the package, how many postcard stamps will be needed.
Answer:
Okay so a couple key points
$5.00 to ship it
Postcard stamps = $0.34
First class stamps= $0.49
And lastly he has 7 first class stamps
So with that being said you take .49 and times it by 7 since he has seven of them and that would be $3.43
And now you take $3.49 and subtract it from the $5.00 you'd be left with $1.57
Now you take $.34 and divide it by $1.57 and you would get a total of 4.61 so that means you would need five postcard stamps
So to be able to ship the package you'd need 7 first class stamps and 5 postcard stamps
Rewrite one fourth times x cubed times y plus three fourths times x times y squared using a common factor.
one fourth times x times y times the quantity x squared plus 3 times y end quantity
one fourth times x cubed times y squared times the quantity y plus 3 times x end quantity
one half times x times y times the quantity 2 times x squared plus 6 times y end quantity
one half times x times y times the quantity x squared plus 3 times y end quantity
The expression 1/4x³y + 3/4xy² can be rewritten as: A. 1/4xy(x² + 3y).
How to Rewrite an Expression?We can rewrite an expression by using a factor that is common in an expression.
Given the expression, 1/4x³y + 3/4xy², the common factor in the expression that we can factor out is 1/4xy.
To rewrite the expression, we have the following:
1/4xy into 1/4x³y will give us x²
1/4xy into 3/4xy² will give us 3y.
This will give us: 1/4xy(x² + 3y).
Therefore, the expression 1/4x³y + 3/4xy² can be rewritten as: A. 1/4xy(x² + 3y).
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Answer:
A. one fourth times x times y times the quantity x squared plus 3 times y end quantity
Step-by-step explanation:
Hope this helps you :)
Write 'six more than four times a number equals 18' as an equation.
6x + 4 = 18
4x + 6 = 18
6x(4) = 18
4x(6) = 18
The required equation is 4x+6=18.
Option (B) is correct.
What is algebra?A part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
Given:
Let the number be 'x'
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign.
We have to find the equation..
According to given question we have
i.e
four times a number=4*x
'six more than=4x+6
equals 18'=18
i.e
4x+6=18
Therefore, the required equation is 4x+6=18.
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2- (-4)= what is the answere
Answer:
The answer is 6.
Step-by-step explanation:
A negative and a negative makes a positive when the problem is written as
x - (-x)
So 2 - (-4) equals 2 + 4
which is simply 6
Answer:
6
Step-by-step explanation:
Two negatives cancel out a positive.
2-(4) should turn into 2 +4
2+4 =6
The coordinates of A and B are (3k, 8) and (k, -3) respectively. Given that the gradient of the line segment AB is 3, find the value of k.
Step-by-step explanation:
gradient = slope or several other words.
it describes how strongly a line (or tangent to a bent curve) is going up or down or ... if it is changing at all.
it is represented by the ratio
(y coordinate change / x coordinate change)
when going from one point on the line to another.
in our case, when going from A to B we have
x changes by -2k (from 3k to k).
y changes by -11 (from 8 to -3).
so, the gradient or slope is
-11/-2k = 3
11/2k = 3
11 = 3×2k = 6k
k = 11/6
A = (33/6, 8) = (11/2, 8)
B = (11/6, -3)
Jean was working on a project involving linear regression. She obtained a predicted value of 8 when she entered 12 as her explanatory variable. Then Jean spilled coffee on her work and could no longer read her regression model. If she remembered that the y-intercept was 26, what was the value of the slope/
A -1.75
B 1.5
C -1.5
D 1.75
E 1.33
Based on the predicted value, the explanatory variable, and the y-intercept, the value of the slope for Jean's project is C. -1.5
What is the slope?A linear regression equation takes the form of:
y = mx + c
y = predicted value
m = slope
x = explanatory variable
c = y-intercept
Given these values, the slope:
8 = 12m + 26
12m = 8 - 26
m = -18 / 12
m = -1.5
In conclusion, option C is correct.
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A restaurant serves breakfast, lunch, anddinner. The restaurant offers a daily special.To estimate the percentage of customers who order the daily specials, the restaurant selected a random sample of customers who had lunch during 2 month period. From the results, the restaurant determined that 25% of these customers ordered the daily
special. Which statement about the sample it true?
1) no generalizations can be made because the sample size is too small.
2)the same shows that exactly 25% of the customers ordered the daily specials
3) the sample might not be representative of the population behave it only survey lunch customers.
4) the sample percentage is the percentage of customers who order daily specials
Answer:
nnk;'/mnhjjfn;h;;vhxpycoyyoly,
Step-by-step explanation:
I]o]ogi-gogoig]gogh]o]v]b]bob]b]k k k lgg]goghjppkngghhjjl
No generalizations can be made because the sample size is too small. Therefore, the correct option is option A.
What is restaurant?A restaurant is an institution of business which prepares and provides clients with food and beverages. Although many restaurants now provide take-out as well as food delivery services, meals are often served and consumed on the premises.
A restaurant serves breakfast, lunch, and dinner. The restaurant offers a daily special. To estimate the percentage of customers who order the daily specials, the restaurant selected a random sample of customers who had lunch during 2 month period. From the results, the restaurant determined that 25% of these customers ordered the daily special. No generalizations can be made because the sample size is too small.
Therefore, the correct option is option A.
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SILL GOVE BRIANLIST TO BEST ANSWER
WHATS the volume of the prism ?
Answer:
629.3 cm3
Step-by-step explanation:
This is known as a rectangular prism aka cuboid.
The formula for the volume is Length x width x height
so 14.5x7x6.2 = 629.3 cm cubed
Please answer please
answer
ex 17
2 3/4 ×8
=11/4×8/1
=11/24
ex 18
9/2× 5/4
=36/10
4