3 years ago

The function f is defined by f(x)=2x^2-4. Find f(-x)

1 answer:

6 0

First of all, since all powers of x in this function are even, the entire function is even. Thus, using -x as input doesn't change the function. Thus, f(-x)=2x^2-4.

You might be interested in

A student finishes the first half of an exam in the time it takes him to finish the second half. If the entire exam takes him an

strojnjashka [21]

Part 1 took 30 minutes and part 2 took 30 minutes

8 0

3 years ago

The original price is $75. She used a coupon code to receive a 20% discount. The web site applied a 10% service fee to the disco

ELEN [110]

-20% + 10 % = -10%

The ticket was less by 10 percent.

4 0

3 years ago

Can someone help me on 6 or 7 (40 points)

adelina 88 [10]

So I think that number 6 is just dividing by 3 and the second one doesn't like divide so number 7 is no and number 6 is yes

7 0

2 years ago

Read 2 more answers

What is 4 1/3 × 2 3/5? express it in lowest terms

soldier1979 [14.2K]

We have,

$4\dfrac{1}{3}\cdot2\dfrac{3}{5}=\dfrac{13}{3}\cdot\dfrac{13}{5}=\dfrac{13\cdot13}{3\cdot5}=\dfrac{169}{15}=\boxed{11.2\bar{6}}$

To express periodic number calculated we use:

$x=11.2\bar{6}\\10x = 112.\bar{6}\\100x=1126.\bar{6}\\90x=100x-10x\Longrightarrow90x=1126.\bar6-112.\bar6\\90x=1014\\x=\dfrac{1014}{90}=\boxed{11\dfrac{24}{90}}$

Hope this helps.

r3t40

3 0

3 years ago

Mark borrowed $5,500 at 11.5 percent for five years. What is his monthly payment?

olya-2409 [2.1K]

Use the formula of the present value of an annuity ordinary which is
Pv=pmt [(1-(1+r/k)^(-kn))÷(r/k)]
Pv present value 5500
PMT monthly payment?
R interest rate 0.115
K compounded monthly 12
N time 5years
Solve the formula for PMT
PMT=Pv÷ [(1-(1+r/k)^(-kn))÷(r/k)]
PMT=5,500÷((1−(1+0.115÷12)^(
−12×5))÷(0.115÷12))
=120.95

So the answer is C

Hope it helps!

5 0

3 years ago

Read 2 more answers