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2 years ago

Question is in the pic please help

Mathematics

2 answers:

steposvetlana [31]2 years ago

5 0

Y=2x+3 would be the lines equation

Virty [35]2 years ago

4 0

Answer:

the slope is positive 2

the slope-intecept form would be, y=2x+3

Step-by-step explanation:

hope this helps!❆

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A Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer; a sample

8090 [49]

Answer:

Step-by-step explanation:

Step(i):-

Given first random sample size n₁ = 500

Given Roper survey reported that 65 out of 500 women ages 18-29 said that they had the most say when purchasing a computer.

First sample proportion

$p^{-} _{1} = \frac{65}{500} = 0.13$

Given second sample size n₂ = 700

Given a sample of 700 men (unrelated to the women) ages 18-29 found that 133 men said that they had the most say when purchasing a computer.

second sample proportion

$p^{-} _{2} = \frac{133}{700} = 0.19$

Level of significance = α = 0.05

critical value = 1.96

Step(ii):-

Null hypothesis : H₀: There is no significance difference between these proportions

Alternative Hypothesis :H₁: There is significance difference between these proportions

Test statistic

$Z = \frac{p_{1} ^{-}-p^{-} _{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } )} }$

where

$P = \frac{n_{1} p^{-} _{1}+n_{2} p^{-} _{2} }{n_{1}+ n_{2} } = \frac{500 X 0.13+700 X0.19 }{500 + 700 } = 0.165$

Q = 1 - P = 1 - 0.165 = 0.835

$Z = \frac{0.13-0.19 }{\sqrt{0.165 X0.835(\frac{1}{500 } +\frac{1}{700 } )} }$

Z = -2.76

|Z| = |-2.76| = 2.76 > 1.96 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

Alternative hypothesis is accepted at 0.05 level of significance

Conclusion:-

There is there is a difference between these proportions at α = 0.05

3 0

3 years ago

If f(x) = -8x – 6 and g(x) = x+8, what is (fºg)(-7)? Enter the correct answer.

Semmy [17]

9514 1404 393

Answer:

-14

Step-by-step explanation:

$(f\circ g)(x)=f(g(x))=f(x+8)=-8(x+8)-6\\\\(f\circ g)(x)=-8x-70\\\\(f\circ g)(-7)=-8(-7)-70=\boxed{-14}$

6 0

3 years ago

Solve the compound inequality 7x ≥ –56 and 9x < 54.

mel-nik [20]

X=-1/3 is the answer

4 0

3 years ago

Enrique tosses a coin and spins the spinner at right. What are all the possible outcomes? How many outcomes are in the sample sp

Minchanka [31]

Answer:

The possible out comes are H1, H2, H3, H4, H5, H6, H7, H8, T1, T2, T3, T4, T5, T6, T7, T8. The total number of possible outcomes is 16.

Step-by-step explanation:

The coin have two possibilities, i.e., head and tail.

The possible outcomes vary according to the numbers on the spinner.

Let the spinner has 8 numbers, then the possible numbers are 1,2,3,4,5,6,7 and 8.

The total possible out comes are H1, H2, H3, H4, H5, H6, H7, H8, T1, T2, T3, T4, T5, T6, T7, T8.

Therefore the total number of possible outcomes is 16.

4 0

3 years ago

Share 150 in ratio 4:1

Gnoma [55]

120:30 --> 4+1=5. 150/5=30. 30*4=120. 30*1=30 :) Hope this helped!

4 0

3 years ago

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