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loris [4]
3 years ago
12

The function f is defined by f(x)=7x−5. Use this formula to find the following values of f. f(3)

Mathematics
2 answers:
Korvikt [17]3 years ago
8 0

Answer:

f(3) = 16

Step-by-step explanation:

f(x)= 7x-5

We want to find the value when x=3

f(3) = 7*3 -5

f(3) = 21-5

f(3) = 16

muminat3 years ago
4 0

Answer:

f(3) = 16

Step-by-step explanation:

Put 3 where x is and do the arithmetic.

... f(3) = 7·3 -5 = 21 -5 = 16

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Solve the system by substitution 3x + 2y = 2<br> y = X-4
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2 years ago
What is the equation of the line that passes through the point (5, 4) and has a slope<br> of<br> 6/5
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Answer:

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5 0
2 years ago
Y=x +5<br> 5x + 2y=1<br><br> Can you show the steps thanks
lubasha [3.4K]

Answer:

(-9/7,-26/7)

[more detailed at the bottom of the explanation]

Step-by-step explanation:

I am assuming that this is a system of equations...

So, knowing that y is equal to x + 5, you would plug that in the second equation and find x. Then you would plug x and find y.

—————

Step 1)

Equation 1:

y = (x + 5)

Equation 2:

5x + 2y = 1

Equation 2 can also be written as:

5x + 2(x+5) = 1

I wrote x+5 instead of y because the first equation tells us that y is equal to x + 5.

—————

Step 2)

Solve for x .

5x + 2(x+5) = 1

5x + 2x + 10 = 1

7x + 10 = 1

7x = 1 - 10

7x = -9

x = -9/7

—————

Step 3)

Plug the x value back in the first equation.

y = -9/7 + 5

y = -26/7

—————

Solution:

x = -9/7

y = -26/7

In ordered pair form:

(-9/7,-26/7)

————— ————— —————

Hope this helps !!!!!!!

5 0
3 years ago
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