Liv collected information about the length and width of a random sample of 48 petals of iris flowers. Here
are the results:
Width is less than 2 cm
Width is more than 2 cm
Total
Length is less than 5.2 cm
14
3
17
Length is 5.2 cm to 5.7 cm
4
11
15
Length is more than 5.7 cm
7
9
16
Total
25
23
48
Liv wants to perform a x² test of independence between petal length and width.
What is the expected count for the cell corresponding to petals whose length is more than 5.7 cm and
whose width is more than 2 cm?
You may round your answer to the nearest hundredth.
Expected:
Answer:
7.67
Step-by-step explanation:
whats the area of this figer
a 18yd 2
b 54 yd 2
c 72 yd2
d 90 yd2
why do we need math and history
Answer: Math and history are very important!
Step-by-step explanation: We use math every day, some people more than others. Math helps your brain become more smarter. It gives us a way to understand different types of patterns better, to quantify relationships, and to in some cases, predict the future. There are many reasons that math is important to us, but what about history? History gives us a tool to help us better understand our past, helping us to spot patterns that are invisible in the present. We can learn about past societies, past ideologies, and lots of other things to see how we got to where we are now. Studying math and history might be boring, pointless, or hard right now(I struggle with math!), but these two subjects are used in everyday life!
There are a number of reasons why studying history and mathematics is crucial. Although history aids in the knowledge of the past, the development of critical thinking abilities, and the development of cultural understanding, mathematics gives a framework for comprehending the world around us and develops essential skills.
What is the importance of math in real life?A person who is proficient in maths can manage a budget, construct furniture, predict, and tell time, among other essential life abilities. As an adult, you need to be able to analyse expenditures, balance a chequebook, and deduct balances. Math can help you with these tasks. Math helps you become a better cook.
Several everyday uses of mathematics exist in contemporary life. It offers a common vocabulary for speaking about and comprehending the physical world. Engineering, computer science, physics, finance, and many other professions depend heavily on mathematics. Many of the technical advancements we take for granted today, like cell phones and space travel, would not exist without mathematics.
On the other hand, history is the study of historical occurrences and their importance. It is significant for a variety of reasons, such as:
History may teach us important lessons that will help us in the future. We may learn how to prevent or repeat prior errors and accomplishments by looking at what went right and wrong in the past.Understanding the current: History enables us to understand how current events continue to be shaped by earlier ones and how they have impacted our world.Understanding diverse civilizations: History offers a glimpse into many cultures and communities.Therefore, both mathematics and history are significant academic disciplines for a variety of reasons. Although history enables us to comprehend the past, learn from it, and foster cross-cultural understanding, mathematics gives us a framework for understanding the world around us and develops crucial abilities.
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what attributes were used to organize these 2 shapes
I am giving brainliest 1st person to answer
2. A line with slope passes through the point (1,3
a. Explain why (3, 6) is on this line.
b. Explain why (0, 0) is not on this line.
Answer:
Step-by-step explanation:
If a line with a slope passes through a point with a value such as in this one, which is (1,3), then it must have a y-intercept and a slope. The y-intercept is when the x-value's value is 0 but the y-value is more than 0.
(3,6) is on the line as it corresponds with the slope.
(0,0) is not on this line as the y-value nor the x-value has a coordinate, which is a requirement to make it an ordered pair.
One of the world's largest apples had a mass of 1,837 grams. Sue said the mass was greater than 2 kilograms.
Does Sue's statement make sense?
Complete the explanation.
Since 1 kilogram = 1,000 grams, 2 kilograms =
grams.
Since 1,837 grams is
?
2 kilograms, Sue's statement
?
make sense.
Answer:
No
Step-by-step explanation:
1 Kilo = 1000 Grams. There are only 1837 Grams. This means that there is no way it is 2 kilos.
explain how to do this please!
Answer:
The area of figure = 600 cm ²
Step-by-step explanation:
Area of this figure = area of triangle + area of rectangle
Area of triangle = 1/2 × base × height
Area of rectangle = length× breadth
=> (1/2 × 20 × 20 ) + ( 20×20 )
=> 200 + 400
=> 600 cm²
Rewrite the logarithm as a ratio of common logarithms and natural logarithms.
log8(12)
Step-by-step explanation:
Use the property of logarithm (change of base)
[tex]log_ab=log_cb/log_ca[/tex]Apply to the given logarithm, considering same natural base
[tex]log_812=ln12/ln8[/tex]The rule is
[tex]\boxed{\sf log_ab=\dfrac{log_eb}{log_ea}=\dfrac{lnb}{lna}}[/tex]
Now
[tex]\\ \rm\Rrightarrow log_8(12)=\dfrac{ln12}{ln8}[/tex]
Point A, located at (5, -4) is reflected
in the y-axis, resulting in the location of point A'. Which of the following statements
iS true?
•Point A' Is located at (-5,-4)
• Point A' Is located ot (-5,4)
• Point A is located ot (4,5)
• Point A' Is located at (-4,5)
Answer: (-5, -4)
Step-by-step explanation:
Reflection across y axis flips the sign of x coordinate only
Answer:
the other person is probably correct!
Step-by-step explanation:
please help asap tysm <33333
Answer:
25 units
Step-by-step explanation:
distance = square root (-8,15)^2 (17,15)^2
Dorothy works 40 hours per week. Her salary is $3,624.34. After deductions her pay is $2,718.26.
What is the net income?
The net income of Dorothy when she works 40 hours per week and her net pay is $2,718 monthly (4 week) is $17/ hour approximately.
How to interpret the division?When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get.
Thus, if 10 mangoes are there, and 2 people, then 10 ÷ 2 is the number of mangoes each person would get, which is 5.
Division, thus, can be interpreted as equally dividing the number that is being divided in total x parts, where x is the number of parts the given number is divided.
Thus, [tex]a \div b = a[/tex] divided in b equal parts.
Also, we can write: [tex]a \div b = a \times \dfrac{1}{b}[/tex]
(it is since a = a times 1 so [tex]a/b = 1 \times (a/b) = (1/b) \times a[/tex])
For this case, we're given that:
Dorothy works 40 hours per weekThe final salary she gets after deduction is $2,718.26 (assuming this is monthly based salary, and each month having equal 4 weeks).Since there are 4 weeks in a month, and each week, Dorothy works 40 hours per week, so the number of hours she worked in those 4 weeks (one month work approx) is:
[tex]40+40+40+40 = 4 \times 40 = 160 \: \rm hours[/tex]
That means, Dorothy gets $2718.26 for 160 hours of work.
Thus, if we divide this salary in 160 parts equally, we'll get net hourly income of Dorothy, as shown below:
[tex]\text{1 hour's pay} = \dfrac{2718.26}{160}\approx 16.98 \approx 17 \: \rm dollars[/tex]
Thus, the net income of Dorothy when she works 40 hours per week and her net pay is $2,718 monthly (4 week) is $17/ hour approximately.
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Help please show a graph when you do it
Answer: you can you you side tools
Step-by-step explanation:
Hello! Can someone help me, please? Thank you so much!!!
Nick has 5, 10, 20, 50 cent coin in his pocket.
He accidentally takes 2 coins out of his pocket. Calculate the possibility of the sum of the two coins that he has taken out being 25 cents.
Answer:
possibility is 1 in 6
Step-by-step explanation:
combinations of 2 coins are
5/10 , 5/20 , 5/50 → 3 possibles
10/20 , 10/50 → 2 possibles
20/50 → 1 possible
there are 6 possible combinations of the 2 coins
the only possible combination for 25 cents is 5/20
thus the possibilty of 2 coins summing to 25 cents is 1 in 6
___________ is perpendicular to line segment LM.
Answer:
The answer is Perpendicular bisector
Step-by-step explanation:
Perpendicular bisector is perpendicular to line segment LM.
If one leg of a right triangle is 18 units and the other leg is 24 units, what is the length of the hypotenuse (in units)?
In response to the supplied query, we may state that Therefore, the Pythagorean theorem length of the hypotenuse is 30 units.
what is Pythagorean theorem?The Pythagorean Theorem, often known as the Pythagorean Theorem, is the fundamental Euclidean geometry relationship between the three sides of a right triangle. The area of a square with the hypotenuse side equals the sum of the areas of squares with the other two sides, according to this rule. The Pythagorean Theorem says that the square that spans a right triangle's hypotenuse opposite the right angle equals the sum of the squares that span its sides. It is sometimes written as the general algebraic notation a2 + b2 = c2.
The Pythagorean theorem, which states that in a right triangle, the sum of the squares of the two legs (the sides that create the right angle) is equal to the square of the length of the hypotenuse, may be used to determine the length of the hypotenuse (the side opposite the right angle).
In this instance, we have two legs, one measuring 18 units and the other 24 units. Let's call the hypotenuse's length "c" for short. The Pythagorean theorem may then be used to determine the value of "c":
[tex]c^2 = 18^2 + 24^2\\c^2 = 324 + 576\\c^2 = 900\\c = \sqrt(900)\\c = 30[/tex]
Therefore, the length of the hypotenuse is 30 units.
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A sampling distribution is a distribution of
A. Data values from a single sample
B. Sample means
O c. Population data values
© D. Variances
Answer:
sample means
Step-by-step explanation:
Can someone please help me i need this
Answer: g + s = 698
3g = s
Step-by-step explanation:
By looking the question, we know that gold tickets and silver tickets add up to 698, so we get:
g + s = 698
And we know that silver tickets is three times of the gold tickets.
3g = s
We combined them together, we get :
g + s = 698
3g = s
Please help. Just this
Answer:
C - relationship between classrooms & desks is proportional
Step-by-step explanation:
A 2-column table with 10 rows. the first column is labeled x with entries 0.5, 1, 1, 1.5, 2, 2, 2.5, 3.5, 3.5, 4. the second column is labeled y with entries 1, 1, 2, 3, 2, 5, 4, 5, 6, 7. a graph shows the horizontal axis numbered 1 to 4 and the vertical axis numbered 1 to 7. a line increases from 0 to 4. the regression calculator shows the relationship between the hours devin spent playing a video game, x, and the levels he achieved, y. which number of hours can be used to make an extrapolation of the level he could achieve? 2 3 4 5
Based on the graph of this regression calculator, the number of hours that can be used to make an extrapolation of the level he could achieve is: A. 2.
What is a regression line?A regression line can be defined as a statistical line that best describes the behavior of a data set and such, it is a line that best fits a set of data.
How to determine number of hours?From the graph of this regression calculator, we can deduce that the linear regression is given by this function y ≈ 1.62x + 0.117; r ≈ 0.92.
Thus, the extrapolation would be given by:
0.14999 ≤ x ≤ 4.35.
0.39999 ≤ y ≤ 7.6.
Therefore, two (2) number of hours can be used to make an extrapolation of the level he could achieve.
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Answer:
answer is 5
Step-by-step explanation:
M
27
1 point
The value of y is directly proportional to the value of x. If y=2/3 whenx=1/12 , what is the value of y when x = 1/2 ?
Step-by-step explanation:
Y is directly proportional to X" can be rewritten as a mathematical expression of the form Y = KX
"K" is the constant of proportionality and must be determined from the initial information.
If Y = 2/3 when X=1/12means 2/3=1/12
K = 2/3÷1/12 = 8
Now that we know the value of K, we can use it to calculate the value of Y when X=1/2
Y = (8)(1/2) = 8/2=4
Y=4
Please let me know the answer to this 5^2+10^2=
Answer:
5^2+10^2=25+100=125
Step-by-step explanation:
Answer: 125
Step-by-step explanation: 5² + 10² = 25 + 100
(08.01 LC)
The language arts teacher wants to know whether the students in the entire school prefer a debate or an speech The teacher draws a random sample from the
following groups
• All teachers in the school
• All boys in each grade
• All students in the speech club
• All students in each grade
Which group best represents the population she should take a random sample from to get the best results for her survey?
Answer:
All students in each grade
Step-by-step explanation:
While you're in the parking lot, you realize that both the lightbulbs and the light switches
need to be replaced. You buy 9 bulbs and 4 switches. Each light switch cost $8 less than
each lightbulb. If the total cost is $520.50, what is the cost of one lightbulb? What is the cost
of one light switch? Write an equation for the situation.
Let x = the cost of a lightbulb
Cost of Lightbulb = x
cost of switch is x-8
9x + 4(x-8) = 520.50
Use distributive property:
9x + 4x -32 = 520.50
Simplify:
13x -32 = 520.50
Add 32 to both sides:
13x = 552.50
Divide both sides by 13
X = 42.50
A lightbulb costs $42.50
A switch costs 42.50-8 = $34.50
Use the information to answer the question.
A gym offers its new customers two plans for 6-month memberships. In both plans, the first 3 hours
•
Plan A: $45. 00 per month, plus $10 per additional -Io hour of racquetball
Plan B: $75.00 per month, plus
$7.50 per additional ; hour of racquetball
Rami
plays 5 hours of racquetball per month.
How much money
will Rami save in 6 months with the
cheaper plan?
Enter the answer in the
$
Answer: A is cheaper
Step-by-step explanation: In the plan A, he pays $270( 45×6) as fee
Then $50/month for racket which is $300
total270+300=570
In plan b he pays 75 per month which is $450 and $37.5 on racket per month which is $225 making a total of $675
Difference in 6months is 675-570= $105 saved
Answer: 105
Step-by-step explanation:
did test
Find the surface area of the cylinder in terms of Tt
Answer:
140 π cm^2
HOPE THIS HELPS! :)
[tex]\textit{surface area of a cylinder}\\\\ SA=2\pi r(r+h)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=5\\ h=9 \end{cases}\implies \begin{array}{llll} SA=2\pi (5)(5+9) \\\\\\ SA=10\pi (14)\implies SA=140\pi \\\\\\ SA\approx 439.82~cm^2 \end{array}[/tex]
The total distance in centimeters a toy robot moves varies directly with the time in seconds.
The toy robot moves a total distance of 264 centimeters in 11 seconds.
What is the time in seconds the toy robot moves when the total distance is 408 centimeters?
F 24 s
G
17 s
H
13 s
J 37 s
Answer:
17s
Step-by-step explanation:
Distance/Time = 264/11
So, in 1 second the toy robot travels 24 centimeters
408/24 = 17s
That's what I concluded with
Clay wants to solve for X if these rectangles are similar how could he use this information to solve fo x
Answer: For two rectangles to be similar, their sides must be in the same ratio. This problem can be solved using ratios and cross multiplication.
Step-by-step explanation:
500 miles in April. He drove 5 times as many r
March. He drove 3 times as many miles in May
id Mr. Anderson drive in May?
Multiple choice questions that’s why there’s 5 pictures
Answer:
option C is the answer
Step-by-step explanation:
hope this helps you
Solve for m (4m-5) (3m+3)
Answer:
m= 26
Step-by-step explanation:
The sum of the angles that lie on a straight line is 180°.
(4m -5)° +(3m +3)°= 180° (adj. ∠s on a str. line)
4m +3m -5 +3= 180
7m -2= 180
7m= 180 +2
7m= 182
Divide both sides by 7:
m= 182 ÷7
m= 26