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lapo4ka [179]
3 years ago
8

2 Points

Mathematics
1 answer:
motikmotik3 years ago
7 0
Can we see what the graph is?
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What is the circumference of this circle? Use π ≈ 3.14. Round your answer to the nearest tenth of a centimeter.
nadezda [96]
We need to now the diameter or radius to find out the circumference.

R times 2 then multiply the product with 3.14
             or
D times 3.14

8 0
3 years ago
In a study of the accuracy of fast food​ drive-through orders, one restaurant had 36 orders that were not accurate among 324 ord
tia_tia [17]

Answer:

We do not have sufficient evidence to reject the claim that ,the rate of inaccurate orders is equal to​ 10%.

Step-by-step explanation:

We want to use a 0.01 significance level to test the claim that the rate of inaccurate orders is equal to​ 10%.

We set up our hypothesis to get:

H_0:p=0.10------->null hypothesis

H_1:p\ne0.10------>alternate hypothesis

This means that: p_0=0.10

Also, we have that, one restaurant had 36 orders that were not accurate among 324 orders observed.

This implies that: \hat p=\frac{36}{324}=0.11

The test statistics is given by:

z=\frac{\hat p-p_0}{\sqrt{\frac{p_0(1-p_0)}{n} } }

We substitute to obtain:

z=\frac{0.11-0.1}{\sqrt{\frac{0.1(1-0.1)}{324} } }

This simplifies to:

z=0.6

We need to calculate our p-value.

P(z>0.6)=0.2743

Since this is a two tailed test, we multiply the probability by:

The p-value is 2(0.2723)=0.5486

Since the significance level is less than the p-value, we fail to reject the null hypothesis.

We do not have sufficient evidence to reject the claim that ,the rate of inaccurate orders is equal to​ 10%.

3 0
3 years ago
PLZ HELP!
ElenaW [278]

Answer:

480 = 12 * 8 * height

height = 480 / 96

height = 5 meters

Step-by-step explanation:

5 0
3 years ago
What is the measure of angle B in the triangle?
pav-90 [236]

Answer:

B = 70

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

A + B + C = 180

40 + 2x-30 + x+20 = 180

Combine like terms

3x + 30 = 180

Subtract 30 from each side

3x+30-30 = 180-30

3x = 150

Divide by 3

3x/3 =150/3

x = 50

We want to find angle B

B = 2x-30

   =2(50) - 30

   = 100 - 30

   = 70

4 0
3 years ago
Read 2 more answers
Michael bought a car for $15,540. He estimates that the car will depreciate by 5% each year. Which function represents this situ
Delicious77 [7]

Answer: f(x) =15540(0.95)^x

Step-by-step explanation:

Given , Micheal bought a car for $15,540.

Rate of depreciation = 5% = 0.05 { To convert a percentage into decimal or fraction , we divide it by 100]

The exponential function used to show depreciation in amount or value ina time period of 'x' is given by :-

f(x)=A(1-r)^x

, where A = Initial value

r= rate of depreciation.

As per given , we have

A= $15,540

r= 0.05

Then , Required function : f(x)=15540(1-0.05)^x=15540(0.95)^x

6 0
3 years ago
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