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Inga [223]
3 years ago
12

The blue figure is a dilation of the black figure. the labeled point is the center of dilation. tell whether the dilation is an

enlargement or a reduction. then find the scale factor of the dilation.
is the dilation an enlargement or reduction?

find the scale factor for n.
n=

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
8 0

Answer:

Step-by-step explanation:

um

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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
OMG PLEASE HELP ME PLESE
slava [35]

Answer:

use demos

Step-by-step explanation:

7 0
3 years ago
Can someone please explain how to get this answer? Recursive formula help!<br>t(1)=3 (in picture)
kipiarov [429]
T(1) = 3, t(n) = -2t(n-1) + 1
So t(2) = -2(t(1)) + 1 = -2(3) + 1 = -5
t(3) = -2(t(2)) +1 = -2(-5) +1 = 11
t(4) = -2(t(3)) +1 = -2(11) +1 = -21
t(5) = -2(t(4)) +1 = -2(-21) +1 = 43
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An equation in standard form looks like Ax + By = C.

Let C = 80

Take it from here.
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defon

Answer:

aq lang to Yung d na binalikan Yung iniwan na parang basura

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2 years ago
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