MATHEMATICS MIDDLE SCHOOL

Expand the brackets and simplify
a. 5(x+4) + 2(x+3)

b. 3(y+6) + 4(y-5)

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

a. 5(x+4) + 2(x+3) = 5*x + 5*4 + 2*x + 2*3

= 5x + 20 + 2x + 6

= 5x + 2x + 20 +6 {bring like terms together}

= 7x + 26

b. 3(y+6) + 4(y-5) = 3*y + 3*6 + 4*y - 4*5

= 3y + 18 + 4y - 20

= 3y + 4y + 18 - 20 {bring like terms together}

= 7y - 2

Answer 2

Answer:

Answer:

a. 7x+26

b.7y-2

Step-by-step explanation:

for question a

1.Do 5 multiplied by x (5x) and 5 multiplied by 4 (20) and do the same with the other brackets

2. simplify the expression (collect the like terms)

5x+20+2x+6=6x+26

3.calculate the sum

DO THE SAME FOR QUESTION b

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A shopper bought shoes marked $40. the sales tax is 8%. how much did the shopper pay in all

Answers

8% equals 3.2. If you add $40 plus $3.2 cents that shopper would of paid $43.2 cents.

Answer:

43.2

Step-by-step explanation:

You only have to:

1-convert 8% to a decimal moving the point twice to the left.

2-multiplying 40 by 0.08

3- add the product of the multiplication that you just did and that will give you the answer✨

How would you simplify 5-6w-4+7w?

Answers

You add the like terms. In this case, the like terms are -6w,+7w & 5,-4.
-6w + 7w = 1w.
5 - 4 = -1.
The coefficients (terms with variables - letters) comes firm, then the terms (numbers)
.
so the final answer is: 1w -1 :)

3/10 and 2/5 common denominator

Answers

3/10 can stay the same,

2/5 >>

2*2 = 4
5*2 = 10

4/10 and 3/10

okay so if 3/10 and 2/5 are uncommon than you have to find a number that there both divisible by in this case its 2 so 2 x 2 4
---- ------
5 x 2 10

Isabella cares for an aquarium that is 6 feet long and. has a height of 4 feet. The aquarium needs 72 cubic feet of water to be completely filled. What is the width of the width of the aquarium?

Answers

l*w*h= volume
6*?*4=72
6*4= 24
72/24=3
the width of the tank would be 3 ft.

sorry there isn't enough info for me to answer that

Victoria jogged a total distance of 4 1/3 miles during the months of June and July. If Victoria jogged only 1/6 of a mile everyday, which expression shows the number of days in which she went jogging?A) 4 1/3 x 6 = ?
B) 4 1/3 / 6 =?
C) 4 1/3 + 6 =?
D) 4 1/3 - 6 =?