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3 years ago

What would (10x^2+8xy-20)-(2x^2+3xy+5) equal??

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

5 0

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what is the mean absolute deviation for the following numbers 40 50 60 60 60.5 60.5 70 70 70.5 70.5 70.5 80.5 80.5 80.5 90

cestrela7 [59]

Your answer should be 86.68.
Mean: you add up all the numbers and divide it by the total of the numbers, in this case there are a total of 11. I added all of them up and got 953.5 and divided by 11. Hoped i helped

5 0

2 years ago

Compute the amount of interest earned in the following simple interest problem. A deposit of $8,000 at 9.5% for 120 days.

elena-14-01-66 [18.8K]

Hi there

I=prt
P principle 8000
R interest rate 0.095
T time 120/360
I interest earned?

I=8,000×0.095×(120÷360)
I=253.33

Hope it helps

6 0

3 years ago

Read 2 more answers

If testing the claim that sigma subscript 1 superscript 2 baseline not equals sigma subscript 2 superscript 2σ21≠σ22, what do w

12345 [234]

Answer:

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

Step-by-step explanation:

System of hypothesis

We want to test if the variation for a group1 is equal to another one 2, so the system of hypothesis are:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

Calculate the statistic

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

6 0

3 years ago

Simplify a5 ÷ a4, a ≠ 0. A) 5a B) a C) 4a D) 1

wel

I assume you mean a^5 divided by a^4. This is a rule that applies to all exponents in that when you divide exponents, you subtract the top from the bottom. So, 5-4 is 1 and that would the answer is b

8 0

3 years ago

A) -3 · x = -21 b) -7x + 16 = 2x - 20 help pls

NeTakaya

Answer:4

Step-by-step explanation:

B) -7x-2x= -20-16

-9x= -36

X= -36 /-9

X= 4

7 0

3 years ago