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3 years ago

If a train is traveling at 90 miles per hour, how many feet is it traveling per second

Mathematics

1 answer:

vredina [299]3 years ago

4 0

Answer:

132 feet per second

Step-by-step explanation:

multiply the mileage by 1.467 and round

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-2(csc2θ - cot2θ) - 1 -2 -3 -1

Lorico [155]

Answer:

- 2

Step-by-step explanation:

$- 2( { \csc}^{2} \theta \: - {cot}^{2} \theta) \\ = - 2(1) \\ = - 2$

8 0

3 years ago

A toy rocket is launched from a platform 24ft above the ground. The

jok3333 [9.3K]

Answer:

4 sec

Step-by-step explanation:

let y = 0 which is the height when the rocket hits the ground

-3t^2 + 6t + 24 = 0

-3(t^2 - 2t - 8) = 0

-3(t - 4)(t + 2) = 0

t = 4 or t = -2

time cannot be negative, so t = 4 sec

8 0

3 years ago

1. Let C be between D and E. Use the Segment addition Postulate to solve for v.

AURORKA [14]

By applying the segment addition postulate, the value of v = 7

According to the Segment Addition Postulate, it holds that if point C is between points D and E, therefore:

DC + CE = DE

Given that:

$DC = 2v-15\\\\CE = 3v-8\\\\DE = 27$

Therefore, by substitution, we will have the following equation:

$(2v-15) + (3v-8) = 27$

Open the bracket and solve for the value of v.

$2v-15 + 3v-8 = 27$

Add like terms

$5v - 23 = 27$

Add 23 to both sides

$5v - 23+ 23 = 27 + 23\\\\5v = 50$

Divide both sides by 5

v = 10

Therefore, using the segment addition postulate, the value of v = 10

Learn more about the segment addition postulate here:

brainly.com/question/1721582

7 0

3 years ago

What is 0.7b^3•0.4b^9

Dennis_Churaev [7]

It's an expression that can be simplified to read

( 0.7 x 0.4 ) ( b³ x b⁹ )

= ( 0.28 ) ( b¹² ) = 0.28 b¹² .

4 0

3 years ago

1. which of these numbers is divisible by 12?

Gala2k [10]

1. 6 is the answer
2. 56 is divisible by 14

6 0

4 years ago

Read 2 more answers