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3 years ago

Water is the answer to 52-3³÷9

Mathematics

1 answer:

REY [17]3 years ago

8 0

52-3^3/9. You need to use PEMDAS on this. You do the exponent first. You get 27. Now divide by 9 and get 3. 52-3 = 49

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Compare: 7/20 O 35%<br><br> who answers first get brainlest

Ugo [173]

Step-by-step explanation:

7/20

=0.35

35%

=35/100

=0.35

Hence, 7/20=35%

7 0

2 years ago

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castortr0y [4]

Answer:

2 5 7

Step-by-step explanation:

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2 years ago

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vichka [17]

Answer:

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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

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

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

2x−8=20 steps to solving

Art [367]

Add 8 to both sides
2x = 28
Divide 2 to both sides
Solution: x = 14

4 0

2 years ago

Read 2 more answers