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AnnZ [28]
3 years ago
10

Evaluate each expression |31| + |-5| =

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
8 0
I believe the answer is 36
harkovskaia [24]3 years ago
3 0
The answer for this expression is 36
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Barry is 8 years older than his sister. In 3 years, he will be twice as old as she will be then. How old is each now?
Colt1911 [192]

Answer:

Step-by-step explanation:

Present age of Barry = b

Present age of sister = s

Barry is 8 years older than his sister means if we subtract 8 from present age of Barry both will be of equal age

s=b-8 ............(1)

In 3 years means we have to add 3 in their present age

s+3=b+3

then

he will be twice as old as

2(s+3)=(b+3

2s+6=b+3

2s=b+3-6

2s=b-3...............(2)

Put the value of s from (1) to (2), we have

2(b-8)=b-3

2b-16=b-3

2b-b=-3+16

b=13

Put the value of b in (1)

s=13-8

s=5

Present age of Barry = b = 13

Present age of sister = s = 5

7 0
3 years ago
PLS HELP ME, i’m gonna fail this exam, you’ll save me !
zhuklara [117]
That’s hard , I don’t even know
7 0
3 years ago
Read 2 more answers
The graph represents the data cost for monthly internet service for a cell phone. Which function, C(x), respresent the monthly c
Tanya [424]

Answer:

Correct option: first one

Step-by-step explanation:

The graph has 3 different parts:

Cost = 15 when the Gigabytes used is lesser than or equal 2,

Cost from 20 to 40 when the Gigabytes used is greater than 2 and lesser than or equal 6.

An increase of 4 gigabytes caused an increase of 20 in the cost, so the slope is 20/4 = 5, and the y-intercept is:

20 = 5*2 + b -> b = 10

Cost = 50 when the Gigabytes used is greater than 6.

So the correct option is the first one

3 0
3 years ago
If f(x) = -3x - 5 and g(x) = 4x - 2, find (f+ g)(x).
Hunter-Best [27]

Answer: x-7

Step-by-step explanation:

f(x)+g(x)=-3x-5+4x-2=\boxed{x-7}

8 0
2 years ago
The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 5 h
kogti [31]

v=d/t

44=d/5

d=220 mile

v=220/11

v=20 mph

7 0
3 years ago
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