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
stepladder [879]
3 years ago
10

Evaluate f(x) = 5x2 - 4x - 9 for f(-2)

Mathematics
1 answer:
Svetllana [295]3 years ago
8 0

Answer:

99

Step-by-step explanation:

5x^2 -4x -9

5(-2)^2 -4(-2) -9

-10^2 +8 -9

100-1

99

You might be interested in
What is the answer to Q=1/2p+15, for p​
Mazyrski [523]

Answer: Q=1/2p+15,= p=2q-30= Slope = 1.000/2.000 = 0.500

 p-intercept = -30/1 = -30.00000

 q-intercept = 30/2 = 15

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    p-(2*q-30)=0  

Solve   p-2q+30  = 0

we have an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  p-2q+30  = 0 and calculate its properties

Notice that when p = 0 the value of q is 15/1 so this line "cuts" the q axis at q=15.00000

 q-intercept = 30/2  =  15

When q = 0 the value of p is -30/1 Our line therefore "cuts" the p axis at p=-30.00000

 p-intercept = -30/1  = -30.00000

Slope is defined as the change in q divided by the change in p. We note that for p=0, the value of q is 15.000 and for p=2.000, the value of q is 16.000. So, for a change of 2.000 in p (The change in p is sometimes referred to as "RUN") we get a change of 16.000 - 15.000 = 1.000 in q. (The change in q is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  1.000/2.000 =  0.500

7 0
3 years ago
Solve for x.<br> Your answer must be simplified.<br><br> x+5≤−4
iren2701 [21]

Answer:

x ≤ -9

Step-by-step explanation:

to solve this equation you must subtract 5 from both sides

you get

x ≤ -9

that is your answer

4 0
2 years ago
Read 2 more answers
For which values of P and Q does the following equation have infinitely many solutions ?
Rzqust [24]
I’d say the answer would be d
7 0
3 years ago
If the pond has a radius of 6.5 ft how much fencing will he need
andre [41]
6.5 times 2 then that time pi or 3.14
5 0
3 years ago
(6+3)+21=6+(3+21) name each property of addition or multiplication
Anna007 [38]
(6 + 3) + 21 = 6 + (3 + 21)

It's an ASSOCIATIVE PROPERTY
(a + b) + c = a + (b + c)
7 0
3 years ago
Other questions:
  • Suppose the expected returns on equity of two firms, Macrosoft and Microsoft, that operate in the same business are 10.50% and 1
    12·1 answer
  • Clare spent a total of 25 minutes at the track. she spent 5 minutes stretching and walking 4 laps around the track. if she walke
    6·1 answer
  • The results of a survey are shown below. In the survey, 12 students said that they would like to learn French. How many of the s
    5·2 answers
  • At Roosevelt High School, there are six more students on the
    7·1 answer
  • Find the
    10·2 answers
  • Gcf of 27, 45 and 54
    10·2 answers
  • Please show step by step
    5·1 answer
  • Jamie reads 15 pages in 25 minutes and wants to know how many pages she can read in 65 minutes
    10·2 answers
  • NEED HELP ASAP!!!
    6·2 answers
  • 45 is 3/4 of what number?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!