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inn [45]
4 years ago
5

If f(x) = 4x + 15, then f(-3) = ?

Mathematics
2 answers:
WARRIOR [948]4 years ago
5 0

Answer:

\Huge \boxed{3}

Step-by-step explanation:

The function is given :

f(x) = 4x + 15

For f(-3), the input for the function f(x) is -3.

Replace the x variable with -3.

f(-3) = 4(-3) + 15

Evaluate.

f(-3) = -12 + 15

f(-3) = 3

The output for f(-3) is 3.

meriva4 years ago
4 0

Answer: f(-3) = 3

Step-by-step explanation: Notice that f is a function of x.

So we want to find f(-3).

We find f(-3) by plugging -3 in for x,

everywhere that x appears in the function.

So we have 4(-3) + 15.

4(-3) is -12 so we have -12 + 15 which is 3.

So f(-3) is 3.

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Enter the correct answer in the box. Write the sum of √28x^6 + 4√7x^6 in simplest form, if x ≠ 0.
kap26 [50]

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4 years ago
Derive the equation of motion of the spring-mass system given below. Please show and MARK your derivation step by step. Missing
Arte-miy333 [17]

Answer:

Ö + θ ( (k/m) + (g/l)) = 0

Step-by-step explanation:

Use the FBD attached:

Apply Newtons 2 nd Law in tangential direction:

Sum ( Ft ) = m*a

Sum of all tangential forces is:

m*g*sin(θ) + k*l*sin(θ)*cos(θ) = - m*l*Ö

Using small angle approximations:

sin (θ) = θ

cos (θ) = 1

Ö = angular acceleration.

m*g*θ + k*l*θ = -m*l*Ö

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5 0
3 years ago
debra buys a new mountain bike for 750 dollars . Sales tax is 9% . how much does Debra actually have to pay ?
Georgia [21]

Answer:

$817.50

Step-by-step explanation:

Hello  Matt7151!

To find the total amount, we will first need to find how much tax.

We can express 9% as the fraction \frac{9}{100}.

\frac{9}{100} × 750 = 67.50

So she's paying $67.50 sales tax.

750.00

  67.50

-------------------

 817.50

So Debra's really paying $817.50.

Thus, the answer is \boxed{$817.50}$$\boxed{817.50}$.

5 0
3 years ago
F(x)=4^x+3 , what is the value of f(3)
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Answer:

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Ermmmmm?mmmmmmmmmmmmm

4 0
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