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2 years ago

Please help me online school isnt fit for me lol

Mathematics

2 answers:

Anna71 [15]2 years ago

7 0

Answer:

Step-by-step explanation:

Standard formula is y=mx+b

m = slope

b = y intercept

worty [1.4K]2 years ago

6 0

Answer:

The answer is A!!

Step-by-step explanation:

You might be interested in

Which ratio is also equal to StartFraction R T Over R X EndFraction and StartFraction R S Over R Y End Fraction?

larisa86 [58]

Answer:

ST/XY

Step-by-step explanation:

(RT/RX)/(RS/RY)= ST/XY

if the shapes are equal and the same then the ratio are equal

if RT is corresponds to RX and RS is corresponds to RY then TS corresponds to TS

7 0

3 years ago

A certain financial services company uses surveys of adults age 18 and older to determine if personal financial fitness is chang

IgorLugansk [536]

Answer:

b) Then z(s) is in the rejection region for H₀. We reject H₀. The p-value is smaller than α/2

c)CI 95 % = ( 0.00002 ; 0.09998)

Step-by-step explanation: In both cases, the size of the samples are big enough to make use of the approximation of normality of the difference of the proportions.

Recent Sample

Sample size n₁ = 1000

Number of events of people with financial fitness more than fair

x₁ = 410

p₁ = 410/ 1000 = 0.4 then q₁ = 1 - p₁ q₁ = 1 - 0.4 q₁ = 0.6

Sample a year ago

Sample size n₂ = 1200

Number of events of people with financial fitness more than fair

x₂ = 420

p₂ = 420/1200 p₂ = 0.35 q₂ = 1 - p₂ q₂ = 1 - 0.35 q₂ = 0.65

Test Hypothesis

Null Hypothesis H₀ p₁ = p₂

Alternative Hypothesis Hₐ p₁ ≠ p₂

CI 95 % then significance level α = 5% α = 0.05 α/2 = 0.025

To calculate p-value:

SE = √ (p₁*q₁)/n₁ + (p₂*q₂)/n₂

SE = √ 0.4*0.6/1000 + 0.65*0.35/1200

SE = √ 0.00024 + 0.000189

SE = 0.021

z(s) = ( p₁ - p₂ ) / SE

z(s) = ( 0.4 - 0.35 )/0.021

z(s) = 0.05/ 0.021

z(s) = 2.38

We find p-value from z-table to be p-value = 0.00842

Comparing

p-value with α/2 = 0.025

α/2 > p-value

Then z(s) is in the rejection region for H₀. We reject H₀

CI 95 % = ( p₁ - p₂ ) ± 2.38*SE

CI 95 % = ( 0.05 ± 2.38*0.021 )

CI 95 % = ( 0.05 ± 0.04998)

CI 95 % = ( 0.00002 ; 0.09998)

CI 95 % does not contain the 0 value affirming what the hypothesis Test already demonstrate

5 0

3 years ago

If you got it correct I will follow and mark it as brilliant answer

Finger [1]

A) 9 + 3x + 6 + 9x + 5
b) 12x + 20

6 0

3 years ago

Find the length of side c of a triangle if side a = 15 and side b = 20. A. 25 B. 17.5 C. 20 D. 15

likoan [24]

If one side of a triangle is 15 and another side is 20, then the third side
can be any length between 5 and 35. There are an infinite number of
possible triangles.

IF it happens to be a RIGHT triangle AND side 'a' and side 'b' happen
to be its legs, then the length of the third side is 25. But you didn't
mention any of those details.

4 0

3 years ago

Shauna spent $175 on a pair of shoes.She spent 1/9 of the remaining money on a shirt.If he still had 4/7of his moneyleft,how muc

KIM [24]

Answer:

$490

Step-by-step explanation:

Shauna spent $175 on a pair of shoes.

She spent 1/9 of the remaining money on a shirt.

If he still had 4/7 of his money left,how much did he have at first ?

Solution:

Let at first, Shauna have = $x$

Money spent on a pair of shoes = $175

Remaining money = $x-175$

<u>As she spent 1/9 of the remaining money on a shirt.</u>

Money spent on shirt = $\frac{1}{9} \times(x-175)=\frac{x}{9} -\frac{175}{9}$

As he still had $\frac{4}{7}$ of his money left:-

Money left = $\frac{4}{7}\ of\ his\ money=\frac{4x}{7}$

Money left with Shauna = Total money, she had at first -(Money spent on a pair of shoes + Money spent on shirt )

$\frac{4x}{7} =x-(175+{\frac{x}{9} -\frac{175}{9} )\\\\\\$

$\frac{4x}{7} =x-(\frac{175}{1} -\frac{175}{9} +\frac{x}{9} )\\\\ \frac{4x}{7} =x-(\frac{1575-175}{9} +\frac{x}{9} )\\\\ \frac{4x}{7}=x-(\frac{1400}{9} +\frac{x}{9} )\\ \\ \frac{4x}{7}=x-\frac{1400}{9} -\frac{x}{9}$