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3 years ago

Can someone help (THERE SHOULD BE A FILE)

Mathematics

2 answers:

Paul [167]3 years ago

6 0

Ok so the hint is very useful and it says to divide the figure into 2 rectangles so if we do so the shorter rectangle's side lengths would be 9, 5, 9, and 5 because that last little bit of length is equal to the longer rectangle and it is also exactly half of 10. so to find the area of a rectangle the formula is a=length* width. so if you were to plug it in it would be a= 9*5 and it equals 45 so you have the area of the first rectangle. Then to find the area of the second rectangle you would do the same thing as the first one. and you would end up with 75. Then just add those two numbers up to get the area

Lesechka [4]3 years ago

4 0

6)
2(9+10) = 38
2(5+6) = 22

P = 38+22=60 in

14)
9 x 10 = 90
6 x 5 = 30
A = 90+50 = 140 in^2

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3 years ago

Read 2 more answers

Find the probability of obtaining exactly one tail when flipping nine coins. Express your as fraction terms on a rounded the nea

Sveta_85 [38]

Answer:0.017578

Step-by-step explanation:

Given

Nine coins are flipped

So the probability of getting a tail is $\frac{1}{2}$

Because on flipping a coin could either yield Head or tail

so getting a tail on nine trails is $\frac{1}{2^9}$

but this tail can come on first coin or second or third ....

So there are 9 possible ways

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3 years ago

A scientist selected a random sample of seven varieties of peach ice cream to investigate the relationship between the density,

ValentinkaMS [17]

Answer:

The significance test that would be used to investigate whether there is convincing evidence at 0.05 level of significance that a greater percent of peaches in the ice cream is associated with an increase in the density of the ice cream is option C;

C. A linear regression t-test for slope

Step-by-step explanation:

The linear regression t-test for slope is a test for determining the existence of a statistically significant linear relationship between two variables, a independent variable, X and an dependent variable Y in the following form;

Y = B₀ + B₁·X

The test is used to test the regression line slope where we have;

B₀ = The constant

B₁ = The slope also known as the regression coefficient

The given information tested in the question is if an increase in the peaches in the ice cream is associated with an increase in the density of the ice cream, therefore, the test to investigate the relationship between the rate of both variables is the linear regression t-test for slope.

Therefore, we have

Y = B₀ + B₁·X

Where;

X = The percentage of peaches in the ice cream

Y = The density of the ice cream

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Step-by-step explanation:

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