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Nana76 [90]
3 years ago
15

Whats the answer and work for this problem (3)

Mathematics
1 answer:
mamaluj [8]3 years ago
3 0
This is a system of equations. You can solve it by substitution or elimination. I'm going to use substitution x - 2y = -4.5; add 2y to each side x - 2y + 2y = -4.5 + 2y; simplify x = 2y - 4.5 2(2y - 4.5) + 3y = 12 4y - 9 + 3y = 12 7y - 9 = 12 7y - 9 + 9 = 12 + 9 7y = 21 y = 3 <--------first answer x - 2y = -4.5 x - 2(3) = -4.5 x - 6 = -4.5 x -6 + 6 = -4.5 + 6 x = 1.5 <--------second answer Check: 2(1.5) + 3(3) = 12? 3 + 9 = 12? 12 = 12; It checks 1.5 - 2(3) = -4.5? 1.5 - 6 = -4.5? -4.5 = -4.5; It checks x = 1.5 and y = 3 <-----------Final Answer
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REASONING A rectangular box for a new product is designed in such a way that
dsp73

Answer:

(2x+3) y (3x+5)

Step-by-step explanation:

For this exercise we have that the volume is

V = 6x ^ 3 + 31X ^ 2 + 53x + 30

H = X + 2

The formula for the Volume its

V = H * L * W

for find L and W (width and length) we divide V / H = L * W

So,

\frac{V}{H} =\frac{6X^{3}+31X^{2}+53X+30 }{X+2}=(2x + 3) * (3x + 5)\\

this division is in the attachment

so, L * W = (2x + 3) * (3x + 5)

6 0
3 years ago
Given that D is he midpoint of AB and K is the midpoint of BC, which statement must be true?
Reil [10]
I can't understand your question do you have any number there?
3 0
3 years ago
What is the height of a prism with a volume of 18/35 cubic units and a base area of 2/5 square units?
marta [7]

The formula for volume is

... V = Bh . . . . . where B is the area of the base, and h is the height

You have

... 18/35 = 2/5·h

... 18/35·5/2 = h = 9/7

The height is 9/7 units.

7 0
3 years ago
Could someone please explain to me how to solve this problem? Thanks! :)
BartSMP [9]

Answer:

First of all since they are dividing subtract the powers of the base from each other .

Make sure the bases are the same.

((6^7-6)(3^3-4))³

((6)(3^-1))³

(6³)(3^-3)

216 × 1/27

= 8

That's option d.

Hope this helps.

6 0
3 years ago
Identify the steps you would take to solve each equation. Then solve 7y + 6 + 4y + 13 = 26​
andriy [413]

Answer:

7/11

Step-by-step explanation:

7y +6+4y+13=26

firstly collect like terms

7y+4y+6+13=26

11y+19=26

11y=26-19

11y=7

then divide through by 11

y=7/11

5 0
3 years ago
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