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kifflom [539]
3 years ago
5

If f(x) = 3x - 7, find f(4).

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
8 0

Answer:

f(4)=5

Step-by-step explanation:

f(x)=3x-7

f(4)=3x4-7

f(4)=12-7

f(4)=5

sergey [27]3 years ago
5 0

Answer:

5

Step-by-step explanation:

3 * 4 - 7 = 5

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Elden [556K]

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Step-by-step explanation:

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4 0
3 years ago
to prepare for a math test Eric study three times as long as Kendra and 1/2 as long as Geraldo. How long did Geraldo study if Ke
sp2606 [1]

Let

x---------> time in minutes used by Eric to study

y---------> time in minutes used by Kendra to study

z---------> time in minutes used by Geraldo to study

we know that

x=3y------> equation 1

x=0.5z

z=2x--------> equation 2

y=20 minutes --------> equation 3

substitute equation 3 in equation 1

x=3*20=60 minutes

find the value of z in equation 2

z=2*60=120 minutes

therefore

<u>the answer is</u>

The time in minutes used by Geraldo to study was 120 minutes

7 0
4 years ago
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ycow [4]
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4 years ago
The length of a rectangle is 2 ft longer than its width. if the perimeter of the rectangle is 32 ft , find its area.
mash [69]
The length of would be 9 and the width 7, resulting in an area of 63
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4 years ago
8x^3+28x^2-4x=0 Factoring
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Answer:

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Step-by-step explanation:

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