Answer:
Step-by-step explanation:
-4m + 5 = -15
-5 -5
-4m = -20
___ ___
-4 -4
m=5
Answer:
Jack
Step-by-step explanation:
90/18 = 5
180/45 = 4
Answer:
6.75
Step-by-step explanation:
h=hat, s=scarf
5h + 1s = $47 (equation 1)
2h + 2s = $40 (equation 2)
multiply equation 1 by 2 , we get: 10h + 2s = $94 (equation 3)
equation 3 minus equation 2, we get:
8h = $54 ⇒ h = $6.75 ⇔ 1 hat cost $6.75
substitute h = $6.75 into equation 2 to find s,
2($6.75) + 2s = $40
$13.5 + 2s = $40
2s = $26.5
s = $13.25 ⇔ 1 scarf cost $13.25
Give a counterexample to disprove the statement all squares are congruent
