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
Molodets [167]
4 years ago
6

Given the function f(x)=-5x^2-x+20 find f(3)

Mathematics
1 answer:
murzikaleks [220]4 years ago
5 0

Answer:

-28

Step-by-step explanation:

-5(3)^2 - 3 + 20

-5*9 - 3 + 20

-45 -3+ 20

-48+ 20

-28

Hope it helps!

You might be interested in
Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You
lisov135 [29]

Answer:

4x + 6 = x

5x + 8 = x

6 0
3 years ago
Read 2 more answers
Use the discriminant to determine the number and type of solutions the equation has. x2 + 8x + 10 = 0 A. no real solutions B. on
olga nikolaevna [1]
I THINK IS C.
IT HAS TWO RATIONAL SOLUTION
6 0
3 years ago
Read 2 more answers
Verify the -(-x) = x for x= -21/31​
aliina [53]

Answer:

-3

Step-by-step explanation:

because of the root

6 0
2 years ago
Identify the solution set of 3 In 4 = 2 In x.<br> -{6}<br> -{-8,8}<br> -(8)
o-na [289]

Option C: The solution set is \{8\}

Explanation:

The expression is 3 \ln 4=2 \ln x

Now, let us find the solution set.

Switch sides, we get,

2 \ln x=3 \ln 4

Dividing by 2 on both sides, we have,

\ln x=\frac{3 \ln 4}{2}

Thus,  \ln 4=\ln 2^2=2\ln 2

Hence, the above expression becomes,

\ln x=\frac{3 \cdot 2 \ln (2)}{2}

Simplifying, we get,

\ln x=3 \ln 2

Applying the log rule, we get,

$$\ln x$=\ln \left(2^{3}\right)$

Simplifying, we have,

$$\ln x$=\ln \left8\right$

Applying the log rule, we have,

x=8

Thus, the solution set is \{8\}

Hence, Option C is the correct answer.

5 0
4 years ago
A scuba diver starts at 85 3/4 meters below the surface of the water and descends until he reaches 103 1/5
RSB [31]

Answer:

From his starting point of 85 3/4, he descended 17 9/20 meters

Step-by-step explanation:

We want to know how much farther he went down from his starting point.

103 1/5 - 85 3/4

S

tart off by making the denominators of both the numbers the same.

103 1/5 - 85 3/4

103 4/20 - 85 15/20

Make them into improper fractions

2064/20 - 1715/20 = 349/20

Make 349/20 into a mixed fraction

17 9/20

5 0
3 years ago
Other questions:
  • What is the vertex of the graph of the function below?
    8·1 answer
  • A sample of grape juice has a hydroxide ion concentration of 1.4 × 10-10 M. Which of these equations will you use to find the hy
    15·2 answers
  • A pharmaceutical sales representative gets paid $50,000 annually plus
    11·1 answer
  • Please answer ASAP.
    14·2 answers
  • At the opening of an Olympic Games, the 38 representatives of a nation want to parade in columns of 6, is it possible? How could
    14·1 answer
  • For this assignment, make a list of behaviors someone may be motivated to do to satisfy each of the following needs according to
    7·1 answer
  • PLEASE HELP!!<br><br> WILL MARK BRAINLIEST!<br><br> What is the measure of arc AB?
    14·1 answer
  • Select three sets of numbers that can be the side lengths of a right triangle
    11·1 answer
  • Stella needed to get her computer fixed. She took it to the repair store. The technician
    5·1 answer
  • The dot plots show the number of hours a group of fifth graders and seventh graders spent playing outdoors over a one-week perio
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!