3 years ago

13 please I have no idea what the steps for this is

Mathematics

1 answer:

Ilya [14]3 years ago

6 0

Answer:

UV=142

Step-by-step explanation:

21x-13=10x+31

+13 +13

21x=10x+44

-10x=-10x

11x=44

÷11 ÷11

x=4

now substitute 4 in place of x (only have to solve one)

21(4)-13= 71

now multiply your answer by 2

71×2=142

You might be interested in

Write the following proportion 8 is to 64 as is to

padilas [110]

8:64 = 1:8 (divide both sides by 8)

8 0

3 years ago

Pleaseee I need help on this one too

erastova [34]

I can't exactly see if the 10 at the end is negative, but I'm going to assume that it is.
10x - 6y = 8
5x - 10y = -10
= (2, 2)
} I hope this helped! {

5 0

2 years ago

The graph above shows the distance Mr. Johnson drives over time.

loris [4]

After 1 hour he has driven 40 miles

6 0

2 years ago

If 3y-x=-7 , what is the value of (2^x)/(8^y)

Travka [436]

Answer:

22=-7

Step-by-step explanation:

7 0

3 years ago

What is the equation of a line with a slope of 7 and a point (1, 8) on the line?

Helen [10]

Answer:

$y=7x+1$

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

In this problem we have

$m=7$

$point(1,8)$

substitute and solve for b

$8=7(1)+b$

$8=7+b$

$b=8-7=1$

The equation of the line is equal to

$y=7x+1$

7 0

3 years ago