All categories

2 years ago

5x + 20 = -5x What does "x" equal?

Mathematics

2 answers:

True [87]2 years ago

7 0

5x + 20 = -5x
5x + 5x = -20
10x = -20
x = -20/10
x = -2

mestny [16]2 years ago

6 0

5x+20=-5x x would represent 2 because if you replace x with two here is what you get
5(2)+ 20=-5(2)
10+20=-10
Which is equivalent to the first expression

You might be interested in

Kendra has $6.00 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?

r-ruslan [8.4K]

Make a system of equations.

$\sf0.10d+0.25q=6$
$\sf~q = 2d$

Plug in 2d for 'q' in the first equation:

$\sf0.10d+0.25q=6$

$\sf0.10d+0.25(2d)=6$

Multiply:

$\sf0.10d+0.50d=6$

Combine like terms:

$\sf0.60d=6$

Divide 0.60 to both sides:

$\sf~d=10$

Now plug this into any of the two equations to find 'q':

$\sf~q = 2d$

$\sf~q = 2(10)$

$\sf~q = 20$

So she has 10 dimes and 20 quarters.

6 0

3 years ago

Read 2 more answers

How is the space between consecutive whole numbers divided on the number line?

stira [4]

C. INTO SIXTHS

I LITRALLY JUST TOOK THE TEST ON EDGE. SO YOU CAN TAKE MY WORD FOR IT

I HOPE I WASNT TOO LATE. IF I WAS, SORRY

4 0

2 years ago

Read 2 more answers

A new state employee is offered a choice of eight basic health plans, four dental plans, and four vision care plans. How many di

Semenov [28]

Answer:

1) 128

2) 32

Step-by-step explanation:

1) 8C1×4C1×4C1 = 128

2) 5C1 + 5C2 + 5C3 + 5C4 + 5C5

= 32

8 0

2 years ago

Create a four types of two steps each with different operation. Solve them and explain the steps

Luba_88 [7]

Answer:

4 + 5 = 9

9 – 5 = 4

9 – 5 ≠ 5 – 9

9 – 4 = 9 + (–4)

6 0

2 years ago

Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.

inessss [21]

Answer:

(a). y = 3x - 11 ; (b). y = $-\frac{1}{3}$ x - 1

Step-by-step explanation:

Parallel lines have the same slopes

Slopes of perpendicular lines are opposite reciprocals.

(3, - 2)

The slope of given line is 3

(a). Equation of ║ line is

y + 2 = 3(x - 3)

y = 3x - 11

(b). Slope of perpendicular line is $-\frac{1}{3}$

y + 2 = $-\frac{1}{3}$ (x - 3)

y =  $-\frac{1}{3}$  x - 1

5 0

2 years ago

Read 2 more answers