3 years ago

PLEASE HELP WITH THESE TWO WUESTIONS ILL GIVE BRAINIEST AND GIVE YOU PTS

Mathematics

1 answer:

blondinia [14]3 years ago

4 0

The first one is the same amount of points

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An airplane's altitude changes -378 feet over 7 minutes. What was the mean change of altitude in feet per minute?

Sveta_85 [38]

<h2>Answer:</h2>

<u>The mean altitude will be</u><u> -54 per minute</u>

<h2>Step-by-step explanation:</h2>

We are given with altitude change as -378 feet over 7 minutes

Now

We need feet per minute

So -378 / 7 will give us the altitude change per minute

-378 / 7 = -54

Therefore the mean change of altitude in feet per minute is -54 per minute

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4 years ago

(-7a^4bc^3)(5ab^4c^2)

taurus [48]

-35a^5b^5c^5 is the answer

6 0

3 years ago

4x - y = -4<br> 5x = 2y +1<br> how do I solve this using elimination?

julia-pushkina [17]

8x - 2y = -8
-5x + 2y = -1

3x = -9
x = -3

4 0

3 years ago

Read 2 more answers

Find the value of X! Please help!

nydimaria [60]

ANSWER

$x = 8 \sqrt{3}$

EXPLANATION

${h}^{2} = {y}^{2} + {4}^{2}$
This implies that,

${h}^{2} = {y}^{2} + 16...eqn1$

Also,

${h}^{2} + {x}^{2} = {16}^{2} ...eqn2$

And

${y}^{2} + {12}^{2} = {x}^{2}$

${y}^{2}={x}^{2} - 144 ...eqn3$

Put equation 1 into equation 2.

This will give us,

${y}^{2} + 16 + {x}^{2} = {16}^{2}$

${y}^{2} +{x}^{2} = {16}^{2} - 16$

${y}^{2} +{x}^{2} =16 ( 16 - 1)$

${y}^{2} +{x}^{2} =240...eqn4$

We put equation 3 into equation 4,

${x}^{2} - 144+{x}^{2} =240$

We simplify to get,

$2 {x}^{2} = 384$

${x}^{2} = 192$

$x = \sqrt{192}$

$x = 8 \sqrt{3}$

4 0

3 years ago

mr.spencer has 7 1/5 liters of juice he wants to pour equal amounts of juice into 3 punch bowls how many liters of juice should

Thepotemich [5.8K]

Answer:

2.4

Step-by-step explanation:

1/5=0.2

7.2/3=2.4

3 0

2 years ago