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Nataliya [291]
3 years ago
13

A stack of boards is 21 inches high. Each board is 1 3/4 inches thick. How many boards are there

Mathematics
1 answer:
Hunter-Best [27]3 years ago
7 0
21 divided by 1 3/4 equals twelve

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A lion runs at a speed of 50 mph and a cheetah runs 78 mph. If they both run at a steady rate, how far will a cheetah run in the
Elden [556K]

Answer:

21.45 mi

Step-by-step explanation:

Distance = speed × time

The time it takes the lion is:

13.75 mi = 50 mi/hr × t

t = 0.275 hr

The distance ran by the cheetah in that time is:

d = 78 mi/hr × 0.275 hr

d = 21.45 mi

7 0
2 years ago
Read 2 more answers
The perimeter of a triangle is 12in. After a dilation, the perimeter is now 60in. What is the scale factor?
LenaWriter [7]

Answer:

scale factor = 5

Step-by-step explanation:

60/12 = 5!!

super easy:)

6 0
2 years ago
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WILL GIVE BRAINLIEST, please explain your answer! Calculate the area of the block "V" shown below. *Drawing not to scale
Vadim26 [7]

Answer:

  132 mm^2

Step-by-step explanation:

The line added to the figure in the attachment shows it can be divided into two figures whose area is easily calculated.

  1. A parallelogram of base length 20 mm and height 4 mm:

     A = bh = (20 mm)(4 mm) = 80 mm^2

  2. A trapezoid with bases 32 mm and 20 mm, and height 2 mm:

     A = (1/2)(b1 +b2)h = (1/2)(32 mm +20 mm)(2 mm) = 52 mm^2

The total area of the figure is then ...

  80 mm^2 +52 mm^2 = 132 mm^2

8 0
3 years ago
Help and explain plzzzzzz
lubasha [3.4K]
14/175 x 100 = 8%

answer is A. 8 (first choice)
8 0
3 years ago
Read 2 more answers
-5(t + 6) + 7t = 100
Mila [183]
Use distribution
-5t - 30 + 7t = 100
Combine like terms
2t - 30 = 100
Add 30 to both sides
2t = 130, t = 65
Solution: t = 65
3 0
3 years ago
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