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Zolol [24]
3 years ago
13

Which expression represents the sum of 8 and twice a number?

Mathematics
1 answer:
vekshin13 years ago
7 0

Answer:

  • B. 8 + 2n

Step-by-step explanation:

Twice a number is 2n

Sum of 8 and twice a number is

  • 8 + 2n

Correct choice is B.

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Does 25/60 and 8/20 form a proportion ?​
notka56 [123]

Answer:

No.

Step-by-step explanation:

Change it so that both fractions would have the same denominator. Note that what you do to the denominator, you must also do to the numerator.

Multiply 3 to both the numerator & denominator of 8/20

(8/20)(3/3) = 24/60

24/60 ≠ 25/60 ∴ these 2 fractions are not proportional.

~

7 0
3 years ago
If a + b = -5 and x + y = -5, what is 6y + 6x - b - a
Novay_Z [31]
6(x +y) -(a +b) = 6(-5) -(-5)
= -25
5 0
3 years ago
Can someone answer 8-11 please
vampirchik [111]

Answer:

7.9

4.2

9.3

17.8

Step-by-step explanation:

8. √63

the square of 8 is 64 √63 is close to 64 so we can say it's 7.9 approximately

9. √18

the square of 4 is 16, √18 is greater than 16 so we can say it's 4.2 approximately

10. √87

the square of 9 is 81, √87 is greater than 81 so we can say the value of it is approximately 9.3

11. √319

the square of 18 is 324, √319 is smaller than 324 so we can say it's 17.8

6 0
3 years ago
Another Algebra problem i am too stupid to do
VARVARA [1.3K]
5 (x+4) ...................
8 0
3 years ago
The rate is $19 for the first five lines, and $7.75 for each additional line. how much is to post a 8 line ad
o-na [289]

Answer:

41.5

Step-by-step explanation:

So you see the first five lines are for 19 dollars.

Multiply 7.75 by 3 since there are 3 additional lines. (Answer: 23.25)

Add 19 and 23.25 together. (Answer: 42.25)

My calculator work will be posted below for reference.

Unit Name: Two-Step Equations

<h2><u><em>If you need any more help or explanation, follow up in the comments below! :P</em></u></h2>

6 0
3 years ago
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