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marysya [2.9K]
3 years ago
8

Can someone help me find the area of this shape

Mathematics
2 answers:
CaHeK987 [17]3 years ago
8 0
I think it is 420 but I'm not sure
Sonja [21]3 years ago
5 0
It should be 30*14(the area of the rectangle) minus 14*pi(the area of the two circles combined.  You end up with around 376 units squared.
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Another day for brainliests if u answer my questions right :D
Mumz [18]
Because they will give you the same answers lol
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3 years ago
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How do you do this equation? <br> 6- 4x less than or equal to 34
Alex73 [517]
X would be less than 6 2/3.
4 0
3 years ago
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Solve plss<br><br> -8r + 12 = 36
liubo4ka [24]
  • -8r + 12 = 36

  • - 8 r = 36 - 12

  • - 8r = 24

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4 0
2 years ago
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A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. The standard deviation of the amount in
erica [24]

Answer:

\chi^2 =\frac{10-1}{0.0144} 0.0217 =13.54

The degrees of freedom are:

df=n-1=10-1=9

Now we can calculate the p value using the alternative hypothesis:

p_v =2*P(\chi^2 >13.54)=0.279

Since the p value is higher than the signficance level assumed of 0.05 we have enough evidence to FAIL to reject the null hypothesis and there is no evidence to conclude that the true deviation differs from 0.12 ounces

Step-by-step explanation:

Assuming the following data:"12.14 12.05 12.27 11.89 12.06

12.14 12.05 12.38 11.92 12.14"

We can calculate the sample deviation with this formula:

s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

n=10 represent the sample size

\alpha=0.05 represent the confidence level  

s^2 =0.0217 represent the sample variance

\sigma^2_0 =0.12^2= 0.0144 represent the value to verify

Null and alternative hypothesis

We want to determine whether the standard deviation differs from 0.12 ounce, so the system of hypothesis would be:

Null Hypothesis: \sigma^2 = 0.0144

Alternative hypothesis: \sigma^2 \neq 0.0144

The statistic can be calculated like this;

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

\chi^2 =\frac{10-1}{0.0144} 0.0217 =13.54

The degrees of freedom are:

df=n-1=10-1=9

Now we can calculate the p value using the alternative hypothesis:

p_v =2*P(\chi^2 >13.54)=0.279

Since the p value is higher than the signficance level assumed of 0.05 we have enough evidence to FAIL to reject the null hypothesis and there is no evidence to conclude that the true deviation differs from 0.12 ounces

7 0
3 years ago
Best Deal 1
scoray [572]

Answer:

C) 18 cents

Step-by-step explanation:

Given,

This weeks deal -

Quantity of Flour      Price ($)         Price per pound ($)

3 pounds                    5.25                 (5.25/3) =  1.75

5 pounds                    9.75                 (9.75/3) =   1.95

7 pounds                    12.60                (12.60/3) = 1.80

10 pounds                  14.20                 (14.20/3) = 1.42

12 pounds                  18.24                 (18.24/3) = 1.52

The lowest price per pound is $1.42. Therefore, this is the current week's best deal.

The last week's best deal was = $`1.60/pound

The difference between the unit price for previous week's best deal and this week's best deal = $1.60 - $1.42 = $0.18

Therefore, 18 cents.

8 0
3 years ago
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