(2x+8)−(x+8)= math 10 points

Mathematics

1 answer:

Marrrta [24]3 years ago

6 0

Answer:

Step-by-step explanation:

(2x+8)-(x+8)

Distribute

2x+8-x-8

Combine like terms

2x-x= x

8-8= 0

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Dasfghg help me!!!!!!

jeka57 [31]

Completing the square
alrighty
minus 31 both sides
x²+12x=-31
take 1/2 of the linear coefient and square it
12 is the linear coefient
12/2=6, (6)²=36
add that to both sides
x²+12x+36=36-31
factor perfect square trinomial
(x+6)²=5
square root both sides, remember to take positive and negative root

x+6=+/-√5

so what you want to write is
x+6=√5 and
x+6=-√5

the solutions
minus 6 both sides

x=-6+√5 and -6-√5

8 0

4 years ago

There were 48 peaches in a carton. The average mass of all the peaches was 0.17 kg. What was their total mass?

alexira [117]

Answer:

8.16 Kg

Step-by-step explanation:

average is calculated as

average = $\frac{sum}{count}$

here average = 0.17 and count = 48 , then

0.17 = $\frac{sum}{48}$ ( multiply both sides by 48 )

8.16 = sum

that is total mass = 8.16 Kg

4 0

2 years ago

Shannon is making identical balloon arrangements for a party she has 24 white balloons and 60 blue balloons she wants to arrange

creativ13 [48]

12 of each color will be used.

hope it helps

5 0

3 years ago

Read 2 more answers

Lisa's favorite chocolate candies are wrapped in the shape of a triangular prism with shiny gold paper as shown below. If all si

Tatiana [17]

Answer:

Surface Area = 150

Step-by-step explanation:

The surface area of this triangular prism is the sum of area of all the sides.

Surface Area = triangle 1 (with base 8 and height 3) + triangle 2 (same as triangle 1) + lateral surface 1 (with length 7 and width 5 (calculation shown below)) + lateral surface 2 (same as lateral surface 1) + bottom (side not shown with length 7 and width 8)

Triangle 1 area: $\frac{1}{2}bh=\frac{1}{2}(8)(3)=12$
Triangle 2 area: $\frac{1}{2}bh=\frac{1}{2}(8)(3)=12$
Lateral surface 1 (rectangle): $l*w=(7)(5)=35$
Lateral surface 2 (rectangle): $l*w=(7)(5)=35$
Bottom surface (rectangle): $l*w=(7)(8)=56$