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sertanlavr [38]
2 years ago
12

Which symmetries does a right square pyramid have? Check all that apply.

Mathematics
1 answer:
Digiron [165]2 years ago
6 0

Answer:a.c,d

Step-by-step explanation:

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The y-intercept of the line whose equation is 2x + y = 4 is -2 2 4
Ber [7]

The y intercept is the value of y when x=0.  Substituting we get

y = 4

Answer: 4

8 0
3 years ago
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The product-3 and t is greater than 11
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i am pretty sure its 8

Step-by-step explanation:

because a negative plus a positive = wichever one is bighger and 8 is bigger than 3 so 11 is positive. 8 +3 = 11

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3 years ago
Find the area of a rectangle with the length of 1 3/4 foot and a width of 1 1/2 foot.
Stolb23 [73]
To find the Area you need to use the formula L x W!! Anyways, You have to multiply the Length x the width. Your Length is 1 3/4 and your width is 1 1/2. So 1 3/4 x 1 1/2 is 2 5/8!!
4 0
3 years ago
A savings and loan association needs information concerning the checking account balances of its local customers. A random sampl
Marina86 [1]

Answer:

The 99% confidence interval for the true mean checking account balance for local customers is ($439.29, $888.99).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 14 - 1 = 13

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 13 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 3.0123

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 3.0123\frac{279.29}{\sqrt{14}} = 224.85

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 664.14 - 224.85 = $439.29

The upper end of the interval is the sample mean added to M. So it is 664.14 + 224.85 = $888.99.

The 99% confidence interval for the true mean checking account balance for local customers is ($439.29, $888.99).

4 0
3 years ago
PLZ HELP I REALLY NEED IT
Ber [7]

Answer:

18 Inches

Step-by-step explanation:

1 foot + 12 in + 6 in = 18 in

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