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
Lesechka [4]
3 years ago
8

Evaluate the function f(8) + g(-1) for the functions f(x) = -2x + 9 and g(x) = x²-2

Mathematics
1 answer:
EastWind [94]3 years ago
7 0

Answer:

- 8

Step-by-step explanation:

To evaluate f(8) substitute x = 8 into f(x)

f(8) = - 2(8) + 9 = - 16 + 9 = - 7

Similarly for g(- 1)

g(- 1) = (- 1)² - 2 = 1 - 2 = - 1

Then

f(8) + g(- 1) = - 7 + (- 1) = - 7 - 1 = - 8

You might be interested in
Please answer all questions, will also give brainiest.
dedylja [7]
1) 5 cups of yellow paint; because if 10 cups of yellow paint are used for 2 cups of blue paint, then you would use 5 cups of yellow paint to even out the pigment of one cup of blue.
2) 3 cups of blue paint, and 15 cups of yellow paint
3) 5 cups of yellow for every cup of blue paint
4) for every cup of blue paint 5 cups of yellow are used to get the same shade of green
4 0
3 years ago
Read 2 more answers
The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship co
Alona [7]

Answer:

95% Confidence interval for the variance:

3.6511\leq \sigma^2\leq 34.5972

95% Confidence interval for the standard deviation:

1.9108\leq \sigma \leq 5.8819

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

s^2=2.89^2=8.3521

The confidence interval for the variance is:

\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128

Then, the confidence interval can be calculated as:

\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:

\sqrt{3.6511}\leq \sigma\leq \sqrt{34.5972}\\\\\\1.9108\leq \sigma \leq 5.8819

6 0
3 years ago
-4h - 6 = 22 what does h equal
daser333 [38]
-4h -6 = 22
To solve this, we need to get -4h by itself and then simplify.
-4h -6 = 22
Add 6 to both sides.
-4h = 28
Divide both sides by -4.
h = -7.

I hope this helps!
8 0
3 years ago
Simplify the fraction <br><br> what is 16 over 38
KIM [24]
8/19 is the answer for your question
8 0
2 years ago
Read 2 more answers
What is 28/25 in simplest form
antoniya [11.8K]
This is already in simplest form
7 0
2 years ago
Read 2 more answers
Other questions:
  • If nona weighs 85 pounds and nina weighs 90 how much does Nino weigh? 2.what is the pattern
    11·2 answers
  • GUYS PLEASE HELP ME ASAP HELP ME HELP ME!!!!!
    15·1 answer
  • What fraction of 18 is 6?
    15·2 answers
  • What is the scale factor of figure a to figure b
    14·1 answer
  • Find the first four (4) terms of the sequence if An=(4) an-1 and a1 =3
    12·1 answer
  • I don’t know how to do it can someone help me?
    5·1 answer
  • Multiply the polynomials (4x^2+3x+7(8x-5)
    5·1 answer
  • 50 POINTS !!<br><br><br> PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
    14·2 answers
  • 5,3,7,9, 5, 19,4
    7·1 answer
  • Find the value of x.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!