All categories

4 years ago

Sumplify 4(x+ 7) - 7x + 2

Mathematics

2 answers:

AleksAgata [21]4 years ago

7 0

Answer:

-3x+30

Step-by-step explanation:

Take it one step at a time. 4(x+7) is the same as 4 times x plus 4 times 7. 4x+28. Now, we have 4x+28-7x+2. 28+2 is 30, and 4x-7x is -3x. The simplified equation is -3x+30

Murljashka [212]4 years ago

5 0

Answer:

x=10

Step-by-step explanation:

4(x+7)-7x+2

4x+28-7x+2

4x-7x =-3x 28+2=30

-3x+30=0

-3x=-30

You might be interested in

X/-2=4, X/3+13=13, Z/2+2=4 plz show ur work and explain how u did it

AVprozaik [17]

$\dfrac{x}{-2}=4\ \ \ |multiply\ both\ sides\ by\ (-2)\\\\(-2)\cdot\dfrac{x}{-2}=(-2)\cdot4\\\\\boxed{x=-8}\\\\\dfrac{x}{3}+13=13\ \ \ |subtract\ 13\ from\ both\ sides\\\\\dfrac{x}{3}+13-13=13-13\\\\\dfrac{x}{3}=0\ \ \ |multpily\ both\ sides\ by\ 3\\\\\not3^1\cdot\dfrac{x}{\not3_1}=0\\\\\boxed{x=0}$

$\dfrac{z}{2}+2=4\ \ \ |subtract\ 2\ from\ both\ sides\\\\\dfrac{z}{2}+2-2=4-2\\\\\dfrac{z}{2}=2\ \ \ \ |multiply\ both\ sides\ by\ 2\\\\\not2^1\cdot\dfrac{z}{\not2_1}=2\cdot2\\\\\boxed{z=4}$

6 0

3 years ago

Oscar spends 2/3 hour each night doing homework for 4 nights this week. The total number of hours he spent doing homework this w

Ksivusya [100]

2/3 of an hour is 40 minutez, therefore that times 4 equals to 160 minutes or 2h and 40 minutes. The answer should be 2-3

5 0

3 years ago

Help Please, 15pts A family buys 2 personal watercrafts for $3,495 each. The family makes $10 equal payments for the watercrafts

irina1246 [14]

Answer:

699 I'm not a 100% sure trying to help

Step-by-step explanation:

3,495×2= 6,990÷ 10= 699

not a 100% sure just trying to help

4 0

3 years ago

Find the greatest common factor of 7 and 21.

sertanlavr [38]

Answer: 7

Step-by-step explanation:

Factors of 7 are, 1, and 7. The factors of 21 are, 1, 3, 7, and 21, making 7 the gcf.

6 0

4 years ago

7. Suppose you want to combine two types of fruit

Schach [20]

Answer:

18 kilograms of drink A and 6 kilograms of drink B

Step-by-step explanation:

Let x equal the amount of Drink A

.04x + .08(24-x) = .05(24) Multiply through by 100 to clear the decimal

4x + 8(24-x) = 5(24)

4x + 192 - 8x = 120 Combine like terms

-4x + 192 = 120 Subtract 192 from both sides

-4x = -72 Divide both sides by -4

x = 18 This is the number of kilograms for drink A.

24-18= 6. This is the amount for Drink B

4 0

1 year ago