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
skad [1K]
3 years ago
7

Evaluate f(-6) for the function f(x) = 9 - 2x. a -42 b 21 c -3 d 1

Mathematics
1 answer:
Temka [501]3 years ago
3 0

Answer:

b)21

Step-by-step explanation:

f(-6) = 9 - 2 × (-6) = 9+12=21

You might be interested in
Mandy has 8 ounces of fish food to feed her fish . she feeds the fish 0.4 of fish food at each feeding how many times can Mandy
sergejj [24]
20 times

This is just simple division. Do 8 divided by 0.4 and you should get 20

Hope this helps!
-Coconut;)
8 0
3 years ago
the width of a rectangle is the length minus 2 units. The area of the rectangle is48 units. What is the width, in units, of the
tatuchka [14]

Answer:

6

Step-by-step explanation:

put unknown as y

area of rectangle = width × long

y(y - 2)=48

y² -2y =48

u can use scientific calculator to find this

y²-2y-48=0

(y-8)(y+6)=0

y=8 y=-6

take the positive value and ignore the negative value

width=y-2 long=8

8-2=6

I hope this help you :)

6 0
3 years ago
Can someone please help me with this?!
Nimfa-mama [501]

(a) 1,1 (b) 3,2 (c) 3,2 (d) 1,5

5 0
3 years ago
Read 2 more answers
What value of m makes the equation true? m + 2m - 6 = -12 + 2m.
denpristay [2]

the answer is 6 i think

4 0
3 years ago
Read 2 more answers
The mean percentange of a population of people eating out at least once a week is 57℅
Sidana [21]

Answer:

<u>The correct answer is B. between 56.45% and 57.55% </u>

Complete statement and question:

The mean percentage of a population of people eating out at least once a week is 57% with a standard deviation of 3.50%. Assume that a sample size of 40 people was surveyed from the population a significant number of times. In which interval will 68% of the sample means occur?

between 55.89% and 58.11%

between 56.45% and 57.55%

between 56.54% and 57.46%

between 56.07% and 57.93%

Source: brainly.com/question/1068489

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Mean percentage of a population of people eating out at least once a week  = 57%

Standard deviation = 3.5%

Sample size = 40

Confidence level = 68%

2. In which interval will 68% of the sample means occur?

For answering this question, we should find out the standard deviation of the sample, using this formula:

Standard deviation of the sample = Standard deviation of the population/√Sample size

Standard deviation of the sample = 3.5/√40

Standard deviation of the sample = 3.5/6.32

Standard deviation of the sample = 0.55

Let's recall that a confidence level of 68% means that 68% of the sample data would have a value between the mean - 1 time the standard deviation of the sample and the mean  + 1 time the standard deviation of the sample. Thus:

57 - 1 * 0.55 = 57 - 0.55 = 56.45

57 + 1  * 0.55 = 57 + 0.55 = 57.55

<u>The correct answer is B. between 56.45% and 57.55% </u>

7 0
3 years ago
Other questions:
  • PLS HURRY WILL GIVE BRAINLIEST
    9·1 answer
  • Adding and subtracting in scientific notation (picture provided)
    11·2 answers
  • What is the length and width of a rectangle with a perimeter of 28 feet and an area of 48 sq feet
    9·2 answers
  • Carrie buys 4.16 pounds of apples for $5.20. How much does 1 pound cost?
    8·2 answers
  • Question 83 true or false and why ? plz ryt answer thanks
    11·1 answer
  • £40,000 is invested at 8% p.a. If interest is
    15·1 answer
  • Three ratios equal to 8/10
    10·1 answer
  • Create an equation to solve for x, then solve to find its value.
    6·1 answer
  • I need help again<br><br><br> ‍♂️
    6·1 answer
  • F(x)=x^(2)+3x+4 is this quadratic, linear, or neither
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!