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
andriy [413]
3 years ago
15

Please help it is a test

Mathematics
1 answer:
irakobra [83]3 years ago
7 0

Answer:

c. -17

Step-by-step explanation:

We have the function f(x) = -2t^2 + 1 and we need to solve for x if f(-3).

Substitute the x in the function with the x in the equation :

f(-3) = -2(-3)^2 + 1

Solve for the answer :

f(-3) = -2(9) + 1

f(-3) = -18 + 1

f(-3) = -17

Therefore, c. -17 is the answer.

You might be interested in
1. -7-(-2) *
Morgarella [4.7K]
1. -7-(-2)
= -7+2= -5

2. 5-(-3)
= 5+3=8

3. -6-4
= -6+(-4)= -10

4. -3-(-3)
= -3+3= 0
8 0
3 years ago
Factor x3 + x2 + x + 1 by grouping. What is the resulting expression?
Scilla [17]
To factor by grouping, you group up the 1st 2 terms together and the last 2 terms together and then factor those pieces.

(x^3 + x^2) + (x + 1)
x^2(x + 1) + 1(x +1) - now factor out the (x + 1)
(x + 1)(x^2 + 1) - final answer

7 0
3 years ago
Read 2 more answers
There are 32 chickens 12 sheep write a ratio expressing the relationship between 32:12 and explain what the ratio means
Degger [83]

Answer:

8:3 for ever 8 chickens there are 3 sheep.

5 0
3 years ago
Read 2 more answers
2(2x-4)=3(2x-4) what does x =​
IgorC [24]

Answer:

x = 2.

Step-by-step explanation:

Multiply (2x - 4) by 2 to get (4x - 8). Multiply (2x - 4) by 3 to get (6x - 12). You then get (4x - 8) = (6x - 12). Subtract 4x from both sides of the equation to get -8 = 2x - 12. Add 12 to both sides of the equation to get 4 = 2x. Divide both sides by 2. You then end up with x = 2. Hope this helps!

6 0
3 years ago
Read 2 more answers
A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at
vitfil [10]

Complete question

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at 7 meters per minute. At a certain instant, the bottom of the ladder is 21 meters from the wall.

What is the rate of change of the distance between the bottom of the ladder and the wall at that instant(in meters per minute)

Answer:

\frac{dx}{dt}=11.94m/min

Step-by-step explanation:

From the question we are told that

Slant height z=29m

Change in Vertical height  \triangle y=7m/s

Horizontal length x=21

Generally in finding the distance form the  top to the bottom of the wall it is mathematically given by

 x^2+y^2=z^2

 21^2+y^2=29^2

 y^2=29^2+21^2

 y=35.81

Generally solving for the differential equation is mathematically represented as

 x^2+y^2=29^2

 2x*\frac{dx}{dt} +2y*\frac{dy}{dt} =0

 x*\frac{dx}{dt} +y*\frac{dy}{dt} =0

 (21)*\frac{dx}{dt} +(35.81)*(-7) =0

 (21)*\frac{dx}{dt} -250.64 =0

 \frac{dx}{dt}=\frac{250.64}{21}

 \frac{dx}{dt}=11.94m/min

5 0
3 years ago
Other questions:
  • Find the 15th term of the arithmetic sequence.
    6·2 answers
  • 3 points lie on an xy plane, with each point representing where a particular person lives. Amy lives at point (2,3); Brian lives
    5·1 answer
  • Dominos.com allows you to build your own pizza online, but it only reveals the price at the end of the process. Watch
    10·1 answer
  • Suppose a life insurance policy costs $24 for the first unit of coverage and then $6 for each additional unit of coverage. Let C
    14·2 answers
  • Pls write the steps u did​
    15·1 answer
  • The high temperature on a cold winter day was 20°F and the low temperature was –15°F. How much higher was the high temperature t
    13·1 answer
  • Answer correctly please !!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Solve and show steps!<br> (x^2 - x - 12) / (x-4)
    7·1 answer
  • Write the equation in slope intercept form. Then, match the equation with the correct graph.
    14·1 answer
  • The linear function that is represented by which table has the same slope as the graph? (the tables are the choices)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!