Answer: See explanation
Step-by-step explanation:
a. Marisa drives 112 miles in 1 hour and 45 minutes, which means her speed is 64 miles per hour.
Speed = Distance / Time
= 112 / 1 45/60
= 112 / 1 3/4
= 112 × 4/7
= 64 miles per hour.
TRUE
b . If 6 pens cost $7.74, then 7 pens cost $9.03.
Cost of one pen = $7.74/6 = $1.29
Cost of 7 pens = $1.29 × 7 = $9.03
TRUE
c. If Raymond drives at a speed of 57 miles per hour, then it takes him 4 hours and 10 minutes to drive 256.5 miles.
Speed = Distance / Time
Speed = 256.5 / 57 = 4.5 = 4 hours 30 minutes
FALSE
d. If 17 identical cans of soup cost $38.59, then 3 of the cans must cost $6.81.
Cost of one can = $38.59 / 17 = $2.27
Cost of 3 cans = $2.27 × 3 = $6.81
TRUE
e. Mr. Mayes buys two dozen eggs for $8.40, which means that he pays 70 cents per egg.
A dozen = 12
2 dozens = 12 × 2 = 24
Cost of one egg = $8.40 / 24 = 0.35 = 35 cents
FALSE
Answer:
Step-by-step explanation:
1) Why would somebody buy a car at a gas station? For $5?
2) You would have $35 to spand on gas. 10 gallons would cost $31. Add 2 more gallons for $6.20.
The total is 12 gallons of gas for $37.20
Answer:
672 sq ft
Step-by-step explanation:
24 x 28 = 672
Answer:
30,246
Step-by-step explanation:
multiply the two numbers
Answer:
The value of x is -3
Step-by-step explanation:
∵ y ∝ x ⇒ y = kx
∵ y = 4 when x = -2
∴ 4 = -2 k ⇒ k = -2
∴ y = -2 x
∵ y = 6
∴ 6 = -2 x
∴ x = 6/-2 = -3