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Reptile [31]
3 years ago
15

URGENT!! I REALLY NEED HELP

Mathematics
1 answer:
Ivenika [448]3 years ago
4 0

Answer

D is the answer

Step-by-step explanation:

as I can see in the screen shot you don't need explanation lol

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Which mixed number is equal to 18/8 <br> 2 6/9<br> 2 5/8<br> 2 1/4<br> 1 2/8
Galina-37 [17]

Answer: 2 1/4

Step-by-step explanation:

4 0
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
3 years ago
Which expression is equivalent to 0?<br> (a)(-a)<br> a +(-a)<br> a/-a <br> a - (-a)
cupoosta [38]

Answer:

a - a or (a +(-a))

Step-by-step explanation:

A negative plus a positive is always zero if they have the same variable.

6 0
3 years ago
Read 2 more answers
If the passes through points (-4,-6) and ( 2 ,6), the rate of change of the line is equal to
Delvig [45]

Answer:

2

Step-by-step explanation:

Use rise over run (y2 - y1) / (x2 - x1)

Plug in the points:

(6 + 6) / (2 + 4)

12/6

= 2

So, the rate of change is 2

6 0
3 years ago
Please help:) deadline is tonight :0 picture of question below
Nostrana [21]
Annual growth rate is (1+0.15)^12. or 5.35025 or 535.025%
3 0
3 years ago
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