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lidiya [134]
4 years ago
10

Simplify each expression for x 4 a. -5x4 b. 7x-3

Mathematics
1 answer:
kirill [66]4 years ago
4 0
Does x equal 4 ?if it does then a) -100
b) 25
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The length of a rectangle is 2 meters less than 2 times the width. The perimeter is 20 meters. Find the width.
kakasveta [241]
The equation you'd make would be (2x-2)+(2x-2)+x+x=20 because the length is 2 m less than the width (x). To simplify, it'd be 6x-4=20 because you combine like terms. You then move the -4 over to the 20 to make it 6x=24. The final answer is 4 meters.
4 0
4 years ago
A regular computer screen has a area of A square inches. The width of the computer screen is 7 inches. Which equation represents
mario62 [17]

Answer:

7 square inches hope this helps brainlest plzzz

Step-by-step explanation:

8 0
3 years ago
Solve by substitution x-y=-11 y+7=-2x
Bess [88]

x - y = - 11   .............( 1 )

y + 7 = - 2x ...............( 2 )

from equation ( 1 )

x - y = - 11

x   = -11 + y  ...........( 3)      

putting x in equation  ( 2 )

y + 7 = - 2 x  

y  + 7 = -2 ( -11 + y )             y + 7 = 22 - 2 y                       y + 2 y =22 - 7            

3 y = 15                  y = 15 / 3

putting value of y in equation 3

x   = -11+ ( 13 /5 )                       x = -33 /3 + 15 / 3         ( l.c.m)

x  = -17 / 5                      

check      

x = -11 + y

- 17 / 5 = -11 + 13 / 5

-17 /5   = -17 / 5

4 0
3 years ago
Amy wants to carpet a room that is 12 feet by 8 feet. How many square yards of carpet will she need to complete the room?
Elodia [21]
Firstly, you should find how many square yard is in one square foot.
One square yard= Nine square feet.
then, in order to find the area, you need to multiply 12 by 8, which gives you 96 square feet.
In order to find the square feet, you need to divide 96 by 9 (as 1 square yard is equal to 9 square feet)
When you divide these, you get 10.66
Therefore, Amy needs 10.66 square yards of carpet.
Hope this helps :) 
4 0
3 years ago
Benito is selling T-shirts for $8 each for his school fund-raiser. So far, he has sold 16 T-shirts. How many more does he need t
Karolina [17]

Answer:

Its D) 8<em>t </em>+ 16 = 200


6 0
3 years ago
Read 2 more answers
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