1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
larisa [96]
3 years ago
15

If f(x) =15x 2 + 10x, find f(-1) Anyone know the answer?

Mathematics
1 answer:
Rom4ik [11]3 years ago
7 0
I'm assuming the given function is f(x) = 15x^2 + 10x.

If so, then,

f(x) = 15x^2 + 10x
f(x) = 15*(x)^2 + 10*(x)
f(-1) = 15*(-1)^2 + 10*(-1) ... note how x is replaced with -1
f(-1) = 15*(1) + 10*(-1)
f(-1) = 15 - 10
f(-1) = 5

Therefore the answer is 5
You might be interested in
Round to the nearest tenth what is the distance between -3,3 and 1,2
Juliette [100K]

Answer:

i dont know im sorry i wish you the best bro

Step-by-step explanation:

3 0
3 years ago
An item is priced at $14.92. If the sales tax is 7%, what does the item cost including sales tax?
exis [7]

Answer: 15.96$

Step-by-step explanation:

(14.92 x .07) + 14.92 =15.9644$ simplified is 15.96$

3 0
3 years ago
You choose a marble at random from a bag containing 3 yellow marbles, 8 red marbles, and 4 blue marbles. You pick a second marbl
jonny [76]
First would be Red Marbles Second would be Blue and last Yellow. (remember this is <em><u>not</u></em> exact)  
I'm sure this is good! :D
5 0
3 years ago
Read 2 more answers
If sin(32)=x , then sin(4) cos(4) cos(8) cos(16)=..............
svp [43]

If sin 32 is equal to x, then sin 4 · cos 4 · cos 8 · cos 16 is equal to x/8 by using <em>double angle trigonometric</em> functions.

<h3>How to simplify an expression by trigonometric expressions</h3>

<em>Trigonometric</em> expressions are formulas that utilize <em>trigonometric</em> functions. <em>Trigonometric</em> functions are a kind of <em>trascendental</em> functions, that is, functions that cannot be described in <em>algebraic</em> terms.

In this question we must simplify a given expression by using the following trigonometric formula:

<em>sin 2x = 2 · cos x · cos x</em>   (1)

Now we proceed to expand the expression given:

x = sin 32

x = 2 · sin 16 · cos 16

x = 4 · sin 8 · cos 8 · cos 16

x = 8 · sin 4 · cos 4 · cos 8 · cos 16

Thus,

sin 4 · cos 4 · cos 8 · cos 16 = x/8

If sin 32 is equal to x, then sin 4 · cos 4 · cos 8 · cos 16 is equal to x/8 by using <em>double angle trigonometric</em> functions. \blacksquare

To learn more on trigonometric functions, we kindly invite to check this verified question: brainly.com/question/6904750

6 0
2 years ago
Please help this is for a friend with co vid- 19
Lesechka [4]

Answer:

Hey I know this isn’t an answer but your bf Jordan told me to tell you he is looking for you and he needs to talk to you. Sorry again for wasting ur time but he kinda worried

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • 4. A discus is thrown from a height of 4 feet with an initial velocity of 65 ft/s at an angle of 44° with the horizontal. How lo
    9·2 answers
  • Carolyn paid a mechanic x dollars per hour for a 5-hour job plus $70 for parts. The total charge was less than $320. Which equat
    15·1 answer
  • A rectangle has a width w that is 5 units longer than its length l. Which equation expresses the rectangle's area, A?
    14·2 answers
  • Can you please help me with question number 14
    10·2 answers
  • Solve -5 + w/3 = -1.
    9·1 answer
  • Complete the statements below that show y = x2 + 2x - 1 being converted to vertex form.
    7·1 answer
  • A company tests the life of its rechargeable batteries over six months of use. They test how long a battery will last after a fu
    6·1 answer
  • If we have a square with an area of 75 square meters, what would the side length be?
    12·2 answers
  • Which relationships describe the angle pair x° and 157º?
    13·2 answers
  • Timothy is an hourly employee and he can work maximum of 40 hours in a week. If the weekly salary depends on the number of hours
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!