Math question from moby max . 8(3+a)=64 what is a

Answers

Answer 1

Answer: I hate mobymax but a is 5 because 5 + 3 is 8 and 8 times 8 is 64

Answer 2

Answer: Hey there, first we simplify 8(3+a)=64 into 8a+24=64, subtract 24 from both sides, 8a+24-24=64-24=8a=40, divide both sides by 8, 8a/8=40/8, a=5.

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Jack buys a bag of 5 apples each equal in size he eat 1/2 of one Apple what fraction did he eat

What is the answer? -15+9-12

Answers

-15+9-12 = -6-12 = -18

-15+9-12= -18 . If The Big Number Is A Negative, You Carry The Sign To The Final Answer.

Katerina draws a square. She wants to draw one line to divide the square into 2 triangles. Is it possible for her to divide the square into 2 obtuse triangles? Explain

Answers

Its not possible to divide the square into two obtuse triangles since each angle within the square is 90 so if you were to draw a line between two of the edges you can only get two right angle trangle.

Some seventh-grade students at Michaelson Middle School were surveyed to find the amount of time they spent doing homework over the past two nights. What is the mean amount of time spent on homework per student?Amount of Time Spent Number of
on Homework(Hours) Students
2 4
3 5
4 6
5 3
6 3
7 0
8 1

Answers

The word mean is a synonym for average. To find the average, you add all of the data, then divide by the amount of data received.

So, we add 2+4+3+5+4+6+5+3+6+3+7+0+8+1. That totals to 57. Then, we divide by 14 because there are 14 answers. The end result is 4.07, because we round up.

What is 1.0395 •10 to the 9th power

Answers

1,039,500,000 or One billion, 39 million, 500 thousand.

How does using an inverse operation help you solve an equation?
*Please help*

Answers

An inverse set of operations is a pair of operations that do the opposite of each other, such as multiplication and division. When solving an algebraic equation, you can use inverse functions to isolate the variable you are trying to find.
For example:
5x=25
The expression 5x was arrived at by multiplying 5 times x. To reverse that multiplication, you would divide 5x by 5 and get x. However, since this is an equation, you would need to divide both sides of the equation by 5, or else it wouldn't still be equal. The result of dividing both sides is x=5.
As you can see, by taking the inverse operation, you were able to isolate your variable (x) on one side of the equation and therefore solve for its value.

it helps you check the equation to see if you did it right hopefully i helped :}

Can someone clarify if i'm right? It says i'm wrong but i'm pretty sure i'm right unless i'm missing something...I did the substitution method, was I meant to do the elimination?
I did the elimination method and it said 4 nickels which in turn gives me 52 pennies.

Answers

There are 32 pennies and 24 nickels in jar

Solution:

Let "n" be the number of nickels

Let "p" be the number of pennies

1 penny = 0.01 dollar

1 nickel = 0.05 dollar

There are 56 coins in the jar in all

Therefore,

number of nickels + number of pennies = 56

n + p = 56 ----------- eqn 1

The total value of coins is $ 1.52

Thus we frame a equation as:

number of nickels x 0.05 + number of pennies x 0.01 = 1.52

$n * 0.05 + p * 0.01 = 1.52$

0.05n + 0.01p = 1.52 -------- eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

n = 56 - p ------ eqn 3

Substitute eqn 3 in eqn 2

0.05(56 - p) + 0.01p = 1.52

2.8 - 0.05p + 0.01p = 1.52

0.04p = 2.8 - 1.52

0.04p = 1.28

Divide both sides by 0.04

p = 32

Substitute p = 32 in eqn 3

n = 56 - 32

n = 24

Thus there are 32 pennies and 24 nickels in jar

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