3 years ago

Six times the sum of a number and twelve is forty.

1 answer:

4 0

X-the number

6(x + 12) = 40 |use distributive property: a(b + c) = ab + ac

6x + 72 = 40 |subtract 72 from both sides

6x = -32 |divide both sides by 6

x = -32/6

x = -16/3

x = -5 1/3

You might be interested in

What is the value of the expression (30.72 × .05) - 1.42

kotykmax [81]

Answer:

0.116

Step-by-step explanation:

$(30.72*0.05)-1.42\\1.536-1.42=\\0.116$

7 0

2 years ago

Read 2 more answers

Solve for v.<br>2= 11 – 3v

Nastasia [14]

Answer:

v= 3

Step-by-step explanation:

2-11= -9

-3v/ -9

= 3

8 0

3 years ago

Type the correct answer in each box. Consider the sum of cubes identity: a3 + b3 = (a + b)(a2 − ab + b2). For the polynomial 8x3

zhuklara [117]

Answer:

a = 2x, b = 3.

Step-by-step explanation:

8x^3+27 = (2x)^3 + 3^3

a = 2x and b = 3.

We can cube root 8x^3 getting 2x and cube root 27 getting 3.

4 0

3 years ago

Which ordered pair will solve the equation 2 × 4 + x = y?

Bezzdna [24]

This answer uses NMF, which you can find out about on my profile:

Preliminary work:
Following the BIDMAS order of operations, we can calculate part of it already, and that's the 2•4, which equals 8.
Therefore, the equation now reads:
8+x = y

x = 5:
8+5 = 13
13 ≠ 16
13 ≠ y

x = 4:
8+4 = 12
12 = 12
12 = y

Therefore, the pair is (4, 12)

5 0

3 years ago

Find all angles, 0 ≤C<360 that satisfy the equation below, to the nearest tenth of a degree.

ludmilkaskok [199]

Move all the terms involving the sine to one side, and all the numbers to the other:

$9\sin(c)-2=\sin(c)-7 \iff 8\sin(c) = -5\iff \sin(c)=-\dfrac{5}{8} \iff c = \arcsin\left(-\dfrac{5}{8}\right)\approx 321.3$

7 0

3 years ago