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1 year ago

Which linear equation would produce a y-intercept of (0, 5) and a slope of 7?

Mathematics

1 answer:

Dafna11 [192]1 year ago

7 0

Answer:

y=7x + 5

Step-by-step explanation:

sub into y= mx + c

where m = slope/gradient (7)

and c = y-value of y-intercept (5)

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For each level of precision, find the required sample size to estimate the mean starting salary for a new CPA with 95 percent co

Rzqust [24]

Answer:

(a) Margin of error ( E) = $2,000 , n = 54

(b) Margin of error ( E) = $1,000 , n = 216

(c) Margin of error ( E) = $500 , n= 864

Step-by-step explanation:

Given -

Standard deviation $\sigma$ = $7,500

$\alpha$ = 1 - confidence interval = 1 - .95 = .05

$Z_{\frac{\alpha}{2}}$ = $Z_{\frac{.05}{2}}$ = 1.96

let sample size is n

(a) Margin of error ( E) = $2,000

Margin of error ( E) = $Z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

E = $Z_{\frac{.05}{2}}\frac{7500}{\sqrt{n}}$

Squaring both side

$E^{2} = 1.96^{2}\times\frac{7500^{2}}{n}$

$n =\frac{1.96^{2}}{2000^{2}} \times 7500^{2}$

n = 54.0225

n = 54 ( approximately)

(b) Margin of error ( E) = $1,000

E = $Z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

1000 = $Z_{\frac{.05}{2}}\frac{7500}{\sqrt{n}}$

Squaring both side

$1000^{2} = 1.96^{2}\times\frac{7500^{2}}{n}$

$n =\frac{1.96^{2}}{1000^{2}} \times 7500^{2}$

n = 216

E = $Z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

500 = $Z_{\frac{.05}{2}}\frac{7500}{\sqrt{n}}$

Squaring both side

$500^{2} = 1.96^{2}\times\frac{7500^{2}}{n}$

$n =\frac{1.96^{2}}{500^{2}} \times 7500^{2}$

n = 864

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2 years ago

Find the smallest value of k, such that 693k is a perfect cube.

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Answer:

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BSEHEJR

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2 years ago

Read 2 more answers

Please help me with this ASAP (Geometry)

9966 [12]

4) They are congruent by ASA.

5) you can set up a proportion.

original height / shadow = original of tree/ shadow of tree

18/21 = x/14
21x = 252
x = 12

SO the height of the tree is 12

Hope this helps :)

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2 years ago

Which distance measures 5 units?

xz_007 [3.2K]

Step-by-step explanation:

the distance between points Y and Z

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Allushta [10]

Answer:

Step-by-step explanation:

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