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madreJ [45]
2 years ago
10

A Train travels at a constant rate of 45 miles per hour. What is the distance,d,in miles,that the train travels in (t) hours ?

Mathematics
1 answer:
Virty [35]2 years ago
7 0
The train would travel 45 miles in 1 hour if it is going 45 miles per hour.
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Rewrite the expression without parentheses.<br> 13m−​(−9m−4​)
svetoff [14.1K]

Answer:

22m+4

Step-by-step explanation:

Let's break it down:

13m+-1(-9m-4)

13m+(9m+4)

22m+4

7 0
2 years ago
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Given a 10 foot length of tree trunk with a radius of 3 feet, what is the weight of the tree trunk section if it has a density o
Nutka1998 [239]

treat the tree trunk as a cylinder

v= pi x r^2 x h

using 3.14 for pi

3.14 x 3^2 x 10 = 282.6 cubic feet

282.6 * 45 =  12, 717 pounds

6 0
3 years ago
The area of a pentagon increased by 27 is the same as four times the area of the pentagon, minus 15. what is the area of the pen
Basile [38]
Set up an algebraic equation. This is what it looks like based on what the question tells you:

Let a = area of pentagon
a+27 = 4a-15
3a-15 = 27
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6 0
3 years ago
What's the circumference of a circle that is 9cm? Please explain step by step of how you got the answer...
Sauron [17]

Formula for finding circumference of a circle is 2πr.

Step-by-step explanation:

  • The given question says what is the circumference of a circle that is 9cm.
  • As radius is required for finding circumference of a circle, the formula is 2πr.
  • Therefore taking the formula and substituting radius (r)= 9 cm. We get 2πr as 2×π×9 = 18π cm OR
  • If we substitute the value of π as 3.14 we will get⇒ 2×3.14×9= 56.52 cm.
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4 0
3 years ago
Express 5x - 2y - 12 = 0 in y=mx + b form and state the slope and y-intercept
dangina [55]

Answer:

Step-by-step explanation:

5x-2y-12=0

5x-2y+12-12=0+12

5x-2y=12

5x-5x-2y=12-5x

-2y=12-5x

(-2y)/-2=(12-5x)/-2

y=5/2x-6

slope= 5/2x up 5 over 2

y-intercept is -6

3 0
2 years ago
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