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max2010maxim [7]

3 years ago

12

Find the product -7 (-a^2) (-b^3)

1 answer:

Savatey [412]3 years ago

4 0

Answer: So you want to work with PEMDAS which you probably remember from Elementary school. Start in the parentheses. What you want to do is multiply your squares, after simplifying. So if you have -a^2 that would be -a multiplied by -a. Then you have -b^3 so that would be -b multiplied by -b multiplied by -b so now your equation will look like this -7 x -a x -a x -b x -b x -b. Negative times a negative is a positive... so -a x -a = a and -b x -b x -b = a negative -b. So the equation simplified is -7 x a x -b. Try and figure it out from there. I apologize if I'm wrong. I struggle with math also. I'm also not sure what kind of algebra this is. Good luck.

Step-by-step explanation:

You might be interested in

What is the standard deviation of this data set? Use a calculator to help you.

ale4655 [162]

Answer:

Standard deviation = 14.064

Step-by-step explanation:

We are given the following data;

X X - $Xbar$ $(X-Xbar)^{2}$

20 20 - 46 = -26 676

23 23 - 46 = - 23 529

32 32 - 46 = -14 196

36 36 - 46 = -10 100

41 41 - 46 = -5 25

43 43 - 46 = -3 9

44 44 - 46 = -2 4

45 45 - 46 = -1 1

47 47 - 46 = 1 1

54 54 - 46 = 8 64

55 55 - 46 = 9 81

59 59 - 46 = 13 169

61 61 - 46 = 15 225

63 63 - 46 = 17 289

66 66 - 46 = 20 <u> 400 </u>

$\sum(X-Xbar)^{2}$ <u>= 2769 </u>

Firstly we will calculate Mean, $Xbar$ = $\frac{\sum X}{n}$

$Xbar = \frac{20+ 23+ 32+ 36+ 41+ 43+ 44+ 45+ 47+ 54+ 55+ 59+ 61+ 63+ 66}{15}$ = 45.93 ≈ 46

Now, Standard deviation formula is given by;

s = $\sqrt{\frac{ \sum(X-Xbar)^{2}}{n-1}}$ = $\sqrt{\frac{ 2769}{15-1}}$ = 14.064 .

7 0

4 years ago

vladimir2022 [97]

I think that it is 1/20

I hope this helped!!

4 0

3 years ago

Isabella wants to change the coverage of her employer-based health insurance policy. In which three of these situations can she

kenny6666 [7]

D would be too late because you’d be changing to a new insurance policy. A would be the best option

4 0

4 years ago

Jaden says that two triangles are congruent if their interior angles are congruent. Is Jaden correct, and why?

Bogdan [553]

Answer:

No

Step-by-step explanation:

No. Congruent triangles should also have corresponding congruent side lengths.

5 0

2 years ago

Brianna's family spends $220 to rent a car for 5

LUCKY_DIMON [66]

Answer:

One day rental is $44

C = 44d is the equation

1:44 is the ration

Step-by-step explanation:

To get the daily rate we take the total cost and divide by days:

220 / 5 = 44

6 0

3 years ago