2 years ago

21 = -4x - 7 What is the answer

Mathematics

1 answer:

Serjik [45]2 years ago

6 0

Answer:

- 7

Step-by-step explanation:

21 = - 4x - 7

- 4x - 7 = 21

- 4x = 21 + 7

- 4x = 28

x = 28 / - 4

x = - 7

You might be interested in

Find 1/9 as many as 3 divided by 5

sergeinik [125]

(3 ÷ 5) ÷ 9 there you go.

3 0

3 years ago

Solve -3/4(8k-24)>-12

lisabon 2012 [21]

$-\dfrac{3}{4}(8k-24) > -12\ \ \ \ |\teext{change the signs}\\\\\dfrac{3}{4}(8k-24) < 12\ \ \ \ |\cdot\dfrac{4}{3}\\\\8k-24 < 12\cdot\dfrac{4}{3}\\\\8k-24 < 4\cdot4\\\\8k-24 < 16\ \ \ \ |+24\\\\8k < 40\ \ \ \ |:8\\\\k < 5\to k\in(-\infty;\ 5)$

7 0

2 years ago

Find the value of pq - r/4 when p= -8 and q= -3 and r= 68

andrey2020 [161]

Answer:

Step-by-step explanation:

pq - r/4

(-8)(-3) - 68/4

-8 x -3 = 24 (2 negatives equal a positive)

24 - 68/4

68/4 = 17

24-17 = 7

6 0

3 years ago

Please help me thank you so much i will give brainliest to the right answer

AnnyKZ [126]

Is is the first one. 1600=.45x

3 0

2 years ago

Read 2 more answers

The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation (MAD) of both data sets is 2.5. What is

Ede4ka [16]

Answer:

Step-by-step explanation:

6 0

3 years ago