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nika2105 [10]
3 years ago
8

Simplify 3x-2+5x+9 pls

Mathematics
2 answers:
vfiekz [6]3 years ago
6 0

Answer:

8x+7

Step-by-step explanation:

creativ13 [48]3 years ago
3 0

Answer:

8x + 7

Step-by-step explanation:

3x - 2 + 5x + 9

3x + 5x + 9 - 2

8x + 7

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A father is 32 years older than his son. In four years,
sergiy2304 [10]

Answer:

  • father: 36
  • son: 4

Step-by-step explanation:

Let s represent the son's age now. Then s+32 is the father's age. In 4 years, we have ...

  5(s+4) = (s+32)+4

  5s +20 = s +36 . . . . . eliminate parentheses

  4s = 16 . . . . . . . . . . . . subtract s+20

  s = 4

The son is now 4 years old; the father, 36.

_____

<em>Alternate solution</em>

In 4 years, the ratio of ages is ...

  father : son = 5 : 1

The difference of their ages at that time is 5-1 = 4 "ratio units". Since the difference in ages is 32 years, each ratio unit must stand for 32/4 = 8 years. That is, the future age ratio is ...

  father : son = 40 : 8

So, now (4 years earlier), the ages must be ...

  father: 36; son: 4.

5 0
3 years ago
Which one is it.<br>You can choose more than one.​
spayn [35]

Answer:

3 and 8

Step-by-step explanation:

6,240/3=2080

6,240/9=693.3333333.....

6,240/780

6 0
2 years ago
Read 2 more answers
CAN SOMEONE HELP ME WITH THE TOP ONE!!!!!!!!!!!!!!!!
jok3333 [9.3K]
Slope= -3/2
Y-intercept=33/2
4 0
3 years ago
Read 2 more answers
Solve the following system of linear equation by graphing. <br>4x + 2y = -2 <br>2x – 3y = 9 ​
Viefleur [7K]
If you can graph in slope intercept, your new equations would be: y= -2x-1 and y= 2/3x-3.
Just graph those now since it should be easier.
3 0
2 years ago
Please help its do in 3 mins
S_A_V [24]
Answer is –4/5

Rearrange the equation to make y the subject

5y = –4x – 35

y = –4/5 x – 7

If the line is parallel to the other line, they both have the same gradients but different y-intercepts, so the gradient is just as is.
6 0
2 years ago
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