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Taya2010 [7]
3 years ago
9

Help? please.........

Mathematics
1 answer:
UkoKoshka [18]3 years ago
8 0

Answer: 60°

Step-by-step explanation: A straight angle is 180°

180°- 120° = 60°

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Which represents the solution(s) of the system of equations, y = –x2 + 6x + 16 and y = –4x + 37? Determine the solution set alge
masya89 [10]

Answer: c.(3, 25) and (7, 9)

y = –x^2 + 6x + 16 and y = –4x + 37

Plug in -4x+37 for y in first equation . It becomes

-x^2 + 6x + 16= -4x+37

Combine like terms. add 4x  and subtract 37 on both sides

-x^2 + 10x - 21=0

Divide the whole equation by -1 to remove negative sign from -x^2

x^2 - 10x + 21=0

Now factor the left hand side

(x-7)(x-3) = 0

x-7 =0  and x-3=0

x= 7  and x=3

Now we find out y using y = –4x + 37

when  x= 7 , then y=-4(7) +37 = 9

when x= 3, then y=-4(3) + 37 = 25

We write solution set as (x,y)

(7,9)  and (3,25) is our solution set


7 0
3 years ago
Read 2 more answers
Pls help I really need this help I’ll try to give extra points
kicyunya [14]

Answer:

c

Step-by-step explanation:

I GOT THE POWER OF GOD AND ANIME ON MY SIDE

3 0
2 years ago
A homeowner wants several small dormers built on his roof to admit light. They will be in the shape of isosceles triangles whose
Vlad1618 [11]
P = s + (s + 5) + (s + 5) This represents the two sides that are 5 inches longer than the base (s + 5) and the base (s).
Simplifying.
100 = 3s + 10
subtract 10 from both sides
 90 = 3s
divide both sides by 3
30 = s
base = 30
sides = 35

CHECK 30 + 35 + 35 = 100

4 0
3 years ago
Please help me with this question.
kow [346]
They are equivalent. combine like terms on the first one and 9x-4x+25 can be simplified to 5x+25.
6 0
2 years ago
Fred's car can travel 368 miles on one tank of gas. His gas tank holds 16 gallons.What is the unit rate for miles per gallon ple
julia-pushkina [17]
368 miles / 16 gallons
368/16=23 miles per gallon
3 0
3 years ago
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