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Thepotemich [5.8K]
3 years ago
8

Which is a simplified form of the expression -6a + 2(2a + 2)?

Mathematics
1 answer:
abruzzese [7]3 years ago
5 0
-2a+4 because you have to distribute
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Middle school math.​
Nonamiya [84]
The last one the reason is 2 is how much weeks so it’d be 2x - 126 cause that’s how much she wants to lose
7 0
2 years ago
Read 2 more answers
The archway of the main entrance of a university is modeled by the quadratic equation
Scilla [17]

Answer:

B. (1,5) and (5.25, 3.94)

Step-by-step explanation:

The answer is where the 2 equations intersect.

We need to solve the following system of equations:

y = -x^2 + 6x

4y = 21 - x

From the second equation:

x = 21 - 4y

Plug this into the first equation:

y = -(21 - 4y)^2 + 6(21 - 4y)

y = -(441 - 168y + 16y^2)+  126 - 24y

y = -441 + 168y - 16y^2 +  126 - 24y

16y^2 + y - 168y + 24y + 441 - 126 = 0

16y^2 - 143y + 315 = 0

y = [-(-143) +/- sqrt ((-143)^2 - 4 * 16 * 315)]/ (2*16)

y = 5, 3.938

When y = 5:

x = 21 - 4(5) = 1

When y = 3.938

x = 21 - 4(3.938) = 5.25.

3 0
3 years ago
25 + 8 (7y - 3) + 3y
nasty-shy [4]

Answer:

59y+1

Step-by-step explanation:

25 + 8 (7y - 3) + 3y

Distribute

25+56y-24+3y

Combine like terms

59y+1

7 0
2 years ago
What is the selling price of a $2,499 motorcycle if a $249 discount is given?
erma4kov [3.2K]
The answer is $2,250. (D). To get the answer you do 2,499-249= 2,250. Hope this helps!!
5 0
3 years ago
Which equation is equivalent to the formula d = rt?<br>r = d/t<br>r = dt<br>t = r/d<br>t = dr​
Allisa [31]

Step-by-step explanation:

d = rt

divide t

d/t = r

r = d/t

6 0
3 years ago
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