All categories

3 years ago

5(2x − 8) = 90 thanks

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

5 0

5(2x-8)=90
10x-40=90
add 40 to both sides
10x=130
divide 130 by 10
and the answer Is x=13

Nataliya [291]3 years ago

3 0

Answer: x=13

Step-by-step explanation:

distributive property: a(b+c)=ab+ac

addition property of equality is adding the same number to both sides of an equation does not change the equation.

divide by 5 both sides of an equation.

5(2x-8)/5=90/5

simplify.

2x-8-18

add 8 both sides of an equation.

2z-8+8=18+8

simplify.

2x=26

divide by 2 both sides of an equation.

2x/2=26/2

simplify.

26/2=13

13*2=26

2*13=26

x=13

Hope this helps!

Thanks!

Have a great day!

You might be interested in

Find the width of a rectangle 25 feet and the perimeter is 80

lukranit [14]

$\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}$

Given - a rectangle with length 25 feet and perimeter 80 feet

To calculate - width of the rectangle

We know that ,

$\bold{Perimeter \: of \: rectangle = 2(l + b)} \\$

where b = width / breadth of rectangle

‎ ‎ ‎

substituting the values in the formula stated above ,

$\bold{80 = 2(25 + b)} \\ \\\bold{ \implies \: 25 + b = \cancel \frac{80}{2} } \\ \\ \bold{\implies \: 25 + b = 40 }\\ \\ \bold{\implies \: b = 40 - 25 }\\ \\\bold{ \implies \: b = 15 \: feet}$

hope helpful ~

3 0

2 years ago

Read 2 more answers

Imagine a 8x8 chessboard, with king beginning from top left by how many routes can he reach bottom right

inna [77]

At least 8 routes, at most 63 routes

7 0

3 years ago

S.V.P URGENT! Mégane à payé 345$ pour un iPod avec des taxes de 14.975% et un rabais de 5%. Quel est le prix régulier ( problème

weqwewe [10]

Answer:

6383.08

Step-by-step explanation:

J'ai dû utiliser google translate, mais j'espère que cela vous aidera.

3 0

2 years ago

if you work and 8 hour shift on each weekend day and take two weeks off during the year, how many hours will you work in a year?

otez555 [7]

$365:7=52 \frac{1}{7} \rightarrow\ the\ number\ of\ weeks\ in\ year\\\\52 \frac{1}{7}-2=50 \frac{1}{7}\\\\50 \cdot5+1=251\ \ \ \rightarrow\ \ \ number\ of \ workday\\\\251\cdot8=2008\ (hour/year)\ \leftarrow\ Ans.$

8 0

3 years ago

Read 2 more answers

Beth won 86 pieces of gum playing hoops at her school’s game night. Later, she gave three to each of her friends. She only has 2

algol [13]

Answer:

That's a very dumb question, because some of her friends could be fakers and users. But, I'll answer it.

86 subtracted by 2 is 84.

It says she gave 3 to each friend so:

84 divided by 3 is 28.

She has 28 friends.

3 0

3 years ago