Answer:
7
Step-by-step explanation:
75% of 28 is 21.
21 pairs are tennis
So,
28-21=7.
7 pairs left!
Answer:
(4, 9) does not satisfy the equation
Step-by-step explanation:
Given the linear equation, y = x - 5, and the point, (4, 9):
We can determine whether (4, 9) is a solution to y = x - 5 by substituting their values into the equation.
x = 4, and y = 9:
y = x - 5
9 = 4 - 5
9 = -1 (False statement)
As demonstrated in our calculations, it turns out that (4, 9) does not satisfy the equation. Therefore, (4, 9) is <u><em>not</em></u> a solution to y = x - 5.
Answer:
D.
Step-by-step explanation:
because the lowest y is -3 and the highest is 2
As with a system of equations, call them A and B in order to keep them straight.
A: x + y = 7
B: x = y + 3
Because in B we have x on one on one side and not x on the other, substitution is the way to go. Substitute equation B into equation A.
x + y = 7 Equation A
y + 3 + y = 7 Putting B into A
2y + 3 = 7 Collect like terms
2y = 4 Subtract 3 on both sides
y = 2 divide both sides by 2
With y = 2 we can substitute that back into an original equation. Choose B.
x = y + 3
x = 2 + 3
x = 5
Thus x = 5 and y = 2, or (5, 2) is the solution of this system.
Answer:
$108.4
Step-by-step explanation:
Divide $216.8 by 4 to find the amount of money Tom makes in 1 day:
== $54.2 per day
We are looking for money Tom makes in TWO days, so multiply the value we just found by 2:
$54.2*2
==$108.4
