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3 years ago

What is the answer to this problem to this answer!

Mathematics

2 answers:

seropon [69]3 years ago

5 0

Y= -2x+3

I'm pretty sure :)

scoundrel [369]3 years ago

4 0

Y= -2x +3
I hope this helps.

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Help me out pleaseeee

Alex787 [66]

Answer:

i cant see that well. please take a clear photo ;-;

Step-by-step explanation:

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3 years ago

. Compute the required sample size given the required confidence in the sample results is 99.74% (Z score of 3). The level of al

Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

$E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }$

$n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2$

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, $Z_\frac{\alpha }{2}$ is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, $Z_\frac{\alpha }{2}$ = 3. Hence:

$n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900$

6 0

3 years ago

Which point is 5 units from (1, –3) on a coordinate plane? A. (–8, 6) B. (6, –3) C. (–3, –6) D. (1, –2)

Rudiy27

Because $\sqrt{ (-3-1)^{2} + (-6+3)^{2} } = \sqrt{ (-4)^{2}+ (-3)^{2} } = 
 \sqrt{16+9} = \sqrt{25} = 5 units;$ , the point is C(-3;-6).

5 0

4 years ago

In a sample of 80 Americans, 55% wished that they were rich. In a sample of 90

dmitriy555 [2]

Answer:

hjgkulihjoj;l

Step-by-step explanation:

7 0

3 years ago

Find the surface area of the square pyramid 8mm 6mm

bija089 [108]

Answer:

136 mm²

Step-by-step explanation:

$A=a^{2} +2a\sqrt{\frac{a^{2} }{4} } +h^{2}$

$A=6^{2} +2(6)\sqrt{\frac{6^{2} }{4} } +8^{2}$

$A=36 +12\sqrt{\frac{36 }{4} } +64$

$A=36 +12\sqrt{9 } +64$

$A=36 +12(3)+64$

$A=36 +36+64$

A = 136

5 0

3 years ago