7r+8p-(5-rp-rp) where r=3 and p=4
plug in 3 and 4 for r and p where it says in the equation
7(3)+8(4)-(5-(3)(4)-(3)(4))
multiply
21+32-(5-12-12)
21+32-(-19)
two negatives make a positive
21+32+19
=72
Answer: I think it is b
Step-by-step explanation:
#1)
Answer:
x=1 and y=12
Explanation:
y=5x+7
y=2x+10
This system should use substitution because the value of y is given in terms if x.
Substitution:
5x+7=2x+10
Solve:
3x=3
x=1
Substitute x to solve for y by plugging x into one if the original equations(doesn’t matter which one is used).
y=5x+7
y=5(1)+7
y=5+7
y=12
#2)
Answer:
x=-8 and y=2
Explanation:
y=2x+18
9y=-2x+2
This system also uses substitution. The value of y us already given in terms if c in the first equations, so we will substitute in the second equation.
Substitute:
9(2x+18)=-2x+2
Solve:
18x+162=-2x+2
20x=-160
x=-8
Now that we have the value if x, plug it into one of the original equations(doesn’t matter which equation) and substitute to find y.
y=2x+18
Substitute:
y=2(-8)+18
Solve:
y=-16+18
y=2
Answer:
Alicia is the golfer who has had the lowest number of strokes per hole
Step-by-step explanation:
we know that
The unit rate of the number of strokes per hole is equal to divide the number of strokes by the number of holes
Let
x ----> the number of strokes
y ----> the number of holes
we have
<em>Roy</em>
<em>Alicia</em>
<em>Rickie</em>
Compare
4.39 < 4.56 < 4.67
therefore
Alicia is the golfer who has had the lowest number of strokes per hole
Answer:
C, A, B
Step-by-step explanation:
C=0.127
A=0.125
B=0.120
