Are 5 multilyed by 7h and 35h equvalent

Answers

Answer 1

Answer: yes because 7h means 7 times h
this is equivilent to 5 times (7 times h)
using the associative property whieh says a(bc)=(ab)c therefor
5 times (7 times h)=(5 times 7) times h
5 times 7=35 so
this equals
(5 times 7) times h=(35) times h=35h

so yes it is equivilent

Answer 2

Answer: If there was no h on 35 then it would be equivalent but, since there is an h and that represents multiplying then you would have to multiply 35 and 5.

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Solve for f(5). f(x)=x^2-2x

Answers

f(5)=5^2-2(5)
f(5)=25-10
f(5)=15
15!

Answer:

Exact form:

x = √2, −√ 2

Demi cal form:

x=1.41421356…, −1.41421356…

Rachel's cell phone company charges $0.10 per minute . She used 350 minutes last month and paid $84. Write and solve a linear equation to fins what her bill will be if she uses 300 minutes next month .

Answers

300 min = $X
350 min = $84
now cross multiply
350 * x = 300*84
x = 25200/350
x = $72 Answer

when 12 is added to a certain number and the result is multiplied by 4. the final result is 60.find the number.

Answers

Answer:

The number is 3

Step-by-step explanation:

Let x be the number

Add 12

(x+12)

Then multiply by 4

4(x+12)

This is equal to 60

4(x+12) = 60

Divide each side by 4

4(x+12)/4 = 60/4

x+12 = 15

Subtract 12 from each side

x+12-12 = 15-12

x = 3

Answer is 3

=====================================================

Work Shown:

x = some unknown number

x+12 = adding 12 to the unknown number

4(x+12) = multiplying the previous sum by 4

4(x+12) = 60 .... set this equal to the desired result we want

Now solve for x. We will undo the steps done above to isolate x

----------------

4(x+12) = 60

x+12 = 60/4 .... divide both sides by 4 to undo "multiply by 4"

x+12 = 15

x = 15-12 .... undo "add 12" by subtracting 12 from both sides

x = 3

-----------------

The unknown number is 3

add 12 to it to get 3+12 = 15

multiply that sum by 4 to get 15*4 = 60

Answer is confirmed.

Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?

Answers

M = 16
16 = 4B
B = 4
(M - B) = 12 <== this will never change. Mary will always be 12 yrs older than he is.

So, when she is twice as old as he is, he is 12 and she is 24.
That will occur in 8 years from now.
They should live long and prosper.

Answer:

Step-by-step explanation:

16 times 4 is 64

64 divided by 2 is equal to 32

The state university reported 1183 cases of flu in their student body for the month of January. If this was a 350% increase above the number of flu cases in the month of December, how many students had flu in December?

Answers

Let us assume the number of students having flu in December = x
Number of students having flu in the month of January = 1183
Percentage increase in the number of people having flu from the month of December to the month of January = 350%
Then we can write the equation as
350x/100 = 1183
350x = 1183 * 100
350x = 118300
x = 118300/350
= 11830/35
= 338
So the number of students that were affected by flu in the month of December was 338. This is the easiest way to get to the required answer.

Answer:

338

Step-by-step explanation:

1183/350%

= 338 people

type it in your calculator just like my equation and you'll get the answer.

Which expression is equivalent to 24 1/3?
A. 2√3
B. 2^3√3
C. 2√6
D. 2^3√6