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3 years ago

Which ordered pair makes both inequalities true? y > –2x + 3 y < x – 2 A.(0,0) B.(0,–1) C.(1,1) D.(3,0)

Mathematics

1 answer:

masha68 [24]3 years ago

8 0

The answer is D
0>3
0<1

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One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s

siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

variance, s₁² = 20

For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

$S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}$

on substituting the given respective values, we get

$S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}$

$S^{2}_{p}$ = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

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3 years ago

16. Use the vertical line test to determine whether the relation is a function.

drek231 [11]

Answer:

neither of them are

Step-by-step explanation:

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2 years ago

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3 years ago

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How do you write 35 over 20 As a percentage

lara31 [8.8K]

In order to write $\frac{35}{20}$ as a percentage, we must first convert the fraction into a decimal. We can do that simply by dividing.

35 / 20 = 1.75

In order to convert a fraction to a decimal, we must multiply it by 100

1.75 * 100 = 175%

$\frac{35}{20}$ as a percentage is 175%.
Hope that helped =)

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3 years ago

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