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Papessa [141]
3 years ago
12

Please help me im confused

Mathematics
2 answers:
slava [35]3 years ago
6 0
Hello, the answer is 0
frosja888 [35]3 years ago
3 0

Answer:

Simplifying

7r + -7r = 0

Combine like terms: 7r + -7r = 0

0 = 0

Solving

0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

Step-by-step explanation:

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yan [13]

Answer:i dfont kngodw

Step-by-step explanation:

its probably c

3 0
3 years ago
A gift box has a volume of 450 cubic inches. The width of the box is 4 inches less than the length. The height is twice the widt
VashaNatasha [74]

Answer:

width = 5 in

length = 5+4=9 in

height = 2(5)= 10 in

Step-by-step explanation:

A gift box has a volume of 450 cubic inches.

Let 'w' be the width of the box

The width of the box is 4 inches less than the length.

length = w+4

The height is twice the width.

height = 2 \cdot width

height = 2w

Volume of box = length times width times height

V=(w+4)(w)(2w)

450=(w+4)(w)(2w)

450=2w^3+8w^2

2w^3+8w^2-450=0

\quad 2\left(w-5\right)\left(w^2+9w+45\right)=0

w-5=0

w=5

\quad\left(w^2+9w+45\right)=0, this gives two complex values

so width = 5

length = 5+4=9

height = 2(5)= 10

5 0
3 years ago
You and your friend each start a car-washing service. you spend $25 on supplies and charge $10 per car. your friend spends $55 o
lakkis [162]
Let x be the number of cars. We will find out how many cars you have to wash to make as much money as your friend:
10x - 25= 13x - 55 Add 25 on both sides and subtract 13x, also both sides:
3x = -30 Now divide both sides by -3:
x= 10 cars you have to wash.

7 0
4 years ago
How is constructing an angle bisector similar to constructing a perpendicular bisector?
Sophie [7]
Hello,
Your answer would be D.
4 0
3 years ago
A polynomial is factored using algebra tiles
dezoksy [38]

Answer:

A) x^2-2x-8

Step-by-step explanation:

The polynomial factored is equal to the area of the algebra tiles. This means the quadratic is

x^2 + x+ x -x -x -x -x-1-1-1-1-1-1-1-1\\x^2-2x-8

After writing out each tile as a term, combine like terms to simplify. This ia the quadratic.

x^2-2x-8

8 0
3 years ago
Read 2 more answers
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