Ask question

Ask question

All categories

2 years ago

15

If f(x) = x2 + 2x – 10, what is f(-2)?

1 answer:

Vera_Pavlovna [14]2 years ago

4 0

Answer:

The answer is -18

Step-by-step explanation:

Actually if the x2 is supposed to be x^2 then it's -10

You might be interested in

Find a real number between -√9 and √25.<br> a.-4<br> b.1<br> c.-5<br> d.6

Aleonysh [2.5K]

Answer:

-5 is the answer

Step-by-step explanation:

c is the answer

3 0

2 years ago

Read 2 more answers

NO LINKS OR ELSE YOU'LL BE REPORTED!Only answer if you're very good at Math.

andreev551 [17]

Answer:

$D.\ y = 3\sin(2(x + \frac{\pi}{4}))$

Step-by-step explanation:

Given

$A = 3$ --- Amplitude

$C = \frac{\pi}{4}$ --- Right phase shift

Required

Identify the function

A sinusoidal function is defined as:

$y = A\sin(B(x + C)) + D$

Substitute values for A and C

$y = 3\sin(B(x + \frac{\pi}{4})) + D$

By comparison, only option (D) has the above format where

$y = 3\sin(2(x + \frac{\pi}{4}))$

Hence (D) is correct

4 0

2 years ago

Logan took out $23,400 in student loans to attend college at a compound interest rate of 5%. He deferred payments for two years.

blagie [28]

Answer:

$25,740

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 5%/100 = 0.05 per year,

then, solving our equation

I = 23400 × 0.05 × 2 = 2340

I = $ 2,340.00

The simple interest accumulated

on a principal of $ 23,400.00

at a rate of 5% per year

for 2 years is $ 2,340.00.

8 0

2 years ago

What is 15% of 76, rounded to two decimal places?

galben [10]

Answer: 11.4

Step-by-step explanation:

I did part / whole = % / 100

So x / 76 = 15 / 100

76 x 15 = 1140

1140 ÷ 100 = 11.4

6 0

2 years ago

Read 2 more answers

How to do this question plz

Ksivusya [100]

Answer:

86.6 feet (3 s.f.)

Step-by-step explanation:

Please see attached picture.

tan60°= height of tower/ 50

Height of tower

= 50tan60°

= 50√3

= 86.6 ft (3 s.f.)

tanѲ= opp/ adj

6 0

3 years ago