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2 years ago

5

Nikos finds a toy train set on sale for 20% off at a toy store. The original price was $35. Nikos must also pay 6.5 sales tax. W

hat is the total amount Nikos must pay for the train set?

1 answer:

Anvisha [2.4K]2 years ago

5 0

Answer:$29.82

First find the discount, then find the tax

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Emily is training for a 10K race. On day one, she runs for 20 minutes. On day two, she runs for 30 minutes. On day three, she ru

Shalnov [3]

Answer:

130

Step-by-step explanation:

:0

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3 years ago

the lines below are parallel. if the slope of the green line is -3, what is the slope of the red line

strojnjashka [21]

The slope of the red line would also be -3 because the lines are parallel, and parallel lines have the same slope.

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3 years ago

Find the slope of the line that contains the points (1,-1) and (-2,8)

motikmotik

The formula for slope is (y-y1)/(x-x1).
1 = x
-1 = y
-2 = x2
8 = y2

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2 years ago

Help please. I dont know how to solve

Vinil7 [7]

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2 years ago

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

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

or

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

4 0

2 years ago