2 years ago

Please tell me how to do these questions, I'm confused.

Mathematics

1 answer:

Ahat [919]2 years ago

7 0

Answer:

2. The office and the music room

6. 68 in. I think?

Step-by-step explanation:

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Find the area of the rectangle.<br> (8x + 5) yards<br> (8x - 5) yards

Zepler [3.9K]

Answer:

48x-5

Step-by-step explanation:

multiply

5*8x

to get

8x+40x-5

combine like term

48x-5

7 0

1 year ago

Antonette gets $70\%$ on a 10-problem test, $80\%$ on a 20-problem test and $90\%$ on a 30-problem test. If the three tests are

notka56 [123]

Answer:

Percentage score will be 83.33 %

Step-by-step explanation:

We have given Antonette gets 70 % on 10 problem test

Let consider here here total problem = total marks

So marks get 10 10 problem test = 10×0.7 = 7

Marks get in 20 problem test = 20×0.8 = 16

And marks get in 30 problem test = 30×0.9 = 27

Now total marks get get by Antonette = 7 +16 + 27 = 50

And total marks = 60

So percentage score of Antonette $=\frac{50}{60}\times 100=83.33$ %

8 0

3 years ago

I need to know how to get the roots for example what is the root of 2 root 5

Harrizon [31]

Answer:

Square roots are when you multiply the same number by itself like for example, the square root of 5 is 25, because 5*5=25

Step-by-step explanation:

5 0

1 year ago

Factor the expression: 625t^5-1715t^2<br> Please show steps!

NeX [460]

Answer:

5 $t^{2}$ (5t-7)(25 $t^{2}$ +35t+49)

Step-by-step explanation:

5 0

2 years ago

What’s the answer for x??

zubka84 [21]

Answer:

3x+85= 21

or, 3x= 85- 21

or, 3x= 64

or,x= 64/3

;. x= 21.3

Step-by-step explanation:

the value of x is 21.3

8 0

2 years ago