Answer:
20. 8% increase = 108% total
2,550 × 1.08 = 2,754
D. 2,754 square feet
21. 25% off + 10% off = 65% total
239.99 × 0.65 = 155.9935
A. $156
22. Adding a negative number is the same as just subtracting.
D. 14 + (-9)
23. C. There is a change in temperature from -3°F to 3°F
24. C = pi × d
C = pi × 8
C = 25.1327
B. 25.1 units
25. 20 ÷ 4 = 5 pages per hour
25 ÷ 5 = 5 pph
D. Yes, because 20/4 = 25/5
26. A = Pi × r^2
9 ÷ 2 = 4.5
4.5^2 = 20.25
C. 20.25pi square inches
27. 100 ÷ 5 = 20
A. m = 20n
30. 250 + 20 - 270 = 0
A. Deposit $20 in the first week and withdraw $270 in the second week
31. 7.44 ÷ 24 = 0.31
A. C = 0.31b
32. -3(-6b + 5)
-3(-6b) + -3(5)
18b + (-15)
D. 18b - 15
33. -13.74 × 4 = -54.96
A. -54.96 feet
Answer:
1. A ring of grass with an area of 314 yd squared surrounds a circular flower bed. Find the width x of the ring of grass.
The radius of the circular flower bed = 10 yd.
2. Harriet has 80 m of fencing materials to enclose three sides of a rectangular garden. She will use the side of her garage as a border for the fourth side. Find the width x of the garden if its area is to be 700 m squared.
3. Sid cuts four congruent squares from the corners of a 30-in.-by-50-in. rectangular piece of cardboard so that it can be folded to make a box. Find the side length s of the squares, given that teh area of the bottom of the box is 200 in squared.
Step-by-step explanation:
Answer:
the graph
Step-by-step explanation:
Answer:
y=112
x=68
Step-by-step explanation:
Since x had to be 44 less than y, I divided y by 2 to get 22. Then, I added 2 to get 24 because the ones have to be the same. Next, I added 24 with 44 to get 68, which is x. Then I added 68 with 44 to get 112, which is y.
Then, to check my work, I added 68 and 112 and got 180, which is the angle of a straight line.
1. num of minutes 2,
distance traveled 200 yds
average rate of speed 100 yds/min
2. num of minutes 2
distance traveled 400 yd
average rate of speed 200 yd/min
3. num of minutes 4
distance traveled 600
average rate of speed 150 yd/min
4 he ran faster in the last two minutes
5. yes because it passes the vertial line test. it is linear