Rob is asked to simplify the expression below.

Mathematics

1 answer:

nadya68 [22]2 years ago

8 0

He forgot to change ALL the sign inside the bracket.
It should read:
10x-8x-12y+3y=2x-9y

You might be interested in

What is the value of x in the equation 3x-4y =65, when y = 4? i will gift brainliest

Elenna [48]

Answer:

3x-4y=65

3x=65+4y

x=(65+4y)/3, when y=4

x=(65+4*4)/3

x=(65+16)/3

x=81/3

x=27

5 0

3 years ago

Read 2 more answers

What is the answer for -5-(15y-1)=2(7y-16)-y

kari74 [83]

First distribute the negative through the parenthesis on the left and the 2 on the right.
-5 -15y +1 = 14y -32 - y
Combine like terms on the right and left
-4 -15y = 13y -32
Now move the variables to one side and the constants to the other.
Subtract 13y from both sides
-4 -28y = -32
Add 4 to both sides
-28y = -28
Divide both sides by -28
y = 1

3 0

3 years ago

A rectangular swimming pool is 15 meters long, 11 1/2 meters wide, and 1 1/2 meters deep. What is its volume?

-BARSIC- [3]

258 3/4 cubic meters

Explanation:
Use this formula for volume of rectangular prism: length x width x height

In this case it would be:
15 • 11 1/2 • 1 1/2 = 258 3/4

VOLUME= 258 3/4 cubic meters

Com.ment me if u have any questions
If my answer is correct, braibliest please!
-SpaceMarsg, have a nice day :DD

3 0

3 years ago

Plutonium-240 decays according to the function where Q represents the quantity remaining after t years and k is the decay consta

taurus [48]

Note: a radioactive decay constant is always negative.

time = [natural log(ending amount / beginning amount)] / k
time = ln (20 / 24) / -.00011
time = ln (5/6) / -.00011
time = -.018232155683 / -.00011
time = 165.7468698455 
time = 165.75 years

7 0

3 years ago

Read 2 more answers

Which of the following example is an improper fraction

Vsevolod [243]

Answer:

an example of an improper fraction is 57/4 or 21/6. cuz ur numerator is larger than ur denominator

5 0

3 years ago

Read 2 more answers