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3 years ago

A plane flies 1140miles at a speed of 240mph. how long does it take? :)

Mathematics

2 answers:

olchik [2.2K]3 years ago

3 0

1140/240 = 4.75 hours

alexgriva [62]3 years ago

3 0

The speed is the ration of the distance to time

speed=240 m/h
distance=1140 mile

so the time elapsed= distance ÷ speed = 1140 / 240 = 4.75 hours

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15(15b−7)=3b−9 plz help meee

Romashka-Z-Leto [24]

Answer:

B=16over37

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

15(15b−7)=3b−9

(15)(15b)+(15)(−7)=3b+−9(Distribute)

225b+−105=3b+−9

225b−105=3b−9

Step 2: Subtract 3b from both sides.

225b−105−3b=3b−9−3b

222b−105=−9

Step 3: Add 105 to both sides.

222b−105+105=−9+105

222b=96

Step 4: Divide both sides by 222.

222b

222

Then simplify

4 0

3 years ago

Read 2 more answers

H(x) = x + 1 k(x) = x - 2 (h + k)(2) =

barxatty [35]

$h(x) = x + 1$

$k(x) = x - 2$

_________________________________

$(h + k)(x) = h(x) + k(x)$

$(h + k)(x) = (x + 1) + (x - 2) \\$

$(h + k)(x) = x + 1 + x - 2$

$(h + k)(x) = 2x - 1$

$(h + k)(2) = 2(2) - 1$

$(h + k)(2) = 4 - 1$

$(h + k)(2) = 3$

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And we're done.....♥️♥️♥️♥️♥️

4 0

3 years ago

On a piece of paper, use a protractor to construct △ABC with m∠A=30° , m∠B=60° , and m∠C=90° .

ANEK [815]

Answer:

C) BC < AB

D) BC < AC

Ste p-by-step explanation:

We are given the following information in the question:

$\angle A = 30^\circ\\\angle B = 60^\circ\\\angle C = 90^\circ$

This means that the side opposite to the right angle in the triangle is AB.

Since, the side opposite to the right angle is the hypotenuse and is the longest side of the triangle, thus AB cannot be shorter than any other side of the triangle.

Hence, option C is correct

BC < AB

Also, in the triangle we have,

$tan~ 60^\circ = \displaystyle\frac{\text{Perpendicular}}{\text{Base}} = \frac{AC}{BC} = \frac{\sqrt3}{1}\\\\\Rightarrow AC > BC$

Hence, option D) is correct

BC < AC

5 0

3 years ago

Read 2 more answers

Help plz I will give brainliest!!!

Marat540 [252]

A.
Hope this is helpful :)

5 0

3 years ago

Please help i've been doing this ages

inn [45]

Sin is equal to opposite over hypotenuse
With this we know that
Opposite = sqrt(12)
Hypotenuse = 4
To find adjacent we need to use the Pythagorean theorem
12 + adj^2 = 4^2
We then solve for adj
12 + adj^2 =16
adj^2 =4
adj =2
Now that we have opposite, adjacent, and hypotenuse, we can find cos and tan
Cos is equal to adj/hypotenuse
Cos = 2/4 = 1/2
Tan is equal to opp/adj
Tan = sqrt(12)/2

3 0

3 years ago