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adoni [48]
3 years ago
9

2a - 4c = 20 -3a+b-4c=20 - 4a + 2b + 3c = -15

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
7 0

Answer: 15-9a+b+3c

Step-by-step explanation:

~ 2a-4c = 20-3a+b-4c = 20-4a+2b+3c = -15

~ 20-5a+b=20-4a+2b+3c=-15

~ -9a+b+3c = -15

~ 15-9a+b+3c

zvonat [6]3 years ago
5 0

Answer: 15-9a+b+3c

Step-by-step explanation:

~ 2a-4c = 20-3a+b-4c = 20-4a+2b+3c = -15

~ 20-5a+b=20-4a+2b+3c=-15

~ -9a+b+3c = -15

~ 15-9a+b+3c

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Interpreting composite functions in the real world The volume of air in a balloon is represented by the function v(r)=4/3 ³, whe
adoni [48]

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

<h3>How to use composition between two function</h3>

Let be <em>f</em> and <em>g</em> two functions, there is a composition of <em>f</em> with respect to <em>g</em> when the domain of <em>f</em> is equal to the range of <em>g</em>. In this question, the <em>domain</em> variable of the function V(r) is replaced by substitution.

If we know that V(r) = (4/3) · π · r³ and r(t) = (1/4) · t², then the composite function is:

V(t) = (4/3) · π · [(1/4) · t²]³

V(t) = (4/3) · π · (1/64) · t⁶

V(t) = (1/48) · π · t⁶

There are two <em>true</em> statements:

  1. When the function is composed with r, the <em>composite</em> function is V(t) = (1/48) · π · t⁶.
  2. V(r(6)) shows that the volume is 972π cubic inches after 6 seconds.

To learn on composition between functions: brainly.com/question/12007574

#SPJ1

7 0
2 years ago
Snow is falling at a rate of 2.5 inches per hour.At this rate, how long will it take 8 inches of snow to fall?
jeyben [28]

Answer:

It will take 3.2 hours for 8 inches of snow to fall.

Step-by-step explanation:

You can solve this be going "backwards".

You have 2.5 inches of snow falling per hour for x hours until you get 8 inches of snow, which can be represented like this:

2.5x=8  From here you being to solve by isolating x on one side of the equation. You would divide both sides by 2.5 to do this

2.5x=8

/2.5    /2.5

8 divided by 2.5 is 3.2 and you then get

x=3.2

It takes 3.2 hours for 8 inches of snow to fall

8 0
3 years ago
What is the equation of the line that passes through the point (-3, 4) and has a slope of 1?​
Tresset [83]

Answer:

the eq of line y= x+7 for sure

4 0
4 years ago
Which measure is equivalent to 1.5 kg?
Airida [17]

Answer:

number 2.) 1,500g

Step-by-step explanation:

i just know..

7 0
3 years ago
11−.5y=3+6x<br><br> The .5 is actually a fraction 1/2
maria [59]

Answer:

-12x+16=y

Step-by-step explanation:

Subtract 3 from 11: 8-0.5y=6x

Move 0.5y to the right side: 8=6x+0.5y

Move 6x to the left side: -6x+8=0.5y

Divide both sides by 0.5: -12x+16=y

4 0
3 years ago
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