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agasfer [191]
3 years ago
7

Need help ^^^^^^^^^^

Mathematics
1 answer:
NeX [460]3 years ago
4 0
The answer is B. 2y+3
this is proven by multiplying the divisor of the original question and the solution
(y-5)(2y+3)
  2y^{2}+3y-10y-15
  2y^{2}-7y-15
You might be interested in
4x-y=20 and -2x-2y=10
lara31 [8.8K]

You can use Substitution to solve this problem:


4x-y=20

-y=-4x+20

y=4x-20


Now you have two equations, and you use the first one to substitute into the second one.


y=4x-20     and     -2x-2y=10


-2x-2(4x-20)=10

-2x-8x+40=10

-10x+40=10

-10x=-30

-x=-3

x=3


Now that we have figured out what x is, we can substitute x in to one of the equations to figure out y.


4x-y=20       x=3

4(3)-y=20

12-y=20

-y=8

y=-8



<em><u>So your answer would be x=3 and y=-8</u></em>

6 0
2 years ago
What is the square root of pie times 9 Plus 44 X 60+89
spin [16.1K]
\sqrt{9+44\cdot60+89}=\sqrt{98+2640}=\sqrt{2738}=\sqrt{2\cdot37\cdot37}=37\sqrt2
4 0
3 years ago
Mark buys last year's best-selling novel, in hardcover, for $23.20. This is with a 20% discount from the original price. What wa
Gelneren [198K]

Answer:

29

Step-by-step explanation:

Let x be the original price.

( 1 - 20% ) x = 23.2

0.8x = 23.2

\frac{0.8x}{0.8}  =  \frac{23.2}{0.8}

x = 29

8 0
2 years ago
A 24 inch board is to be cut into three pieces so that the second piece is twice as long as the first piece and the third piece
Anastaziya [24]

F=length of first piece=x; S=length of second piece=2x

T=length of third piece=3x

.

F+S+T=24 inches

x+2x+3x=24 inches

6x=24in

F=x=4in

ANSWER 1: The length of the first piece is 4 inches.

.

S=2x=2(4in)=8in

ANSWER 2: The length of the second piece is 8 inches.

.

T=3x=3(4in)=12 inches.

ANSWER 3: The length of the third piece is 12 inches.

.

CHECK:

F+S+T=24in

4in+8in+12in=24in

24in=24in

7 0
2 years ago
What are the factors of 16 and 9
marta [7]

The factors of  16  are  1,  2,  4,  8,  and  16 .

The factors of  9  are  1,  3,  and  9 .

3 0
3 years ago
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