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
bogdanovich [222]
3 years ago
10

Need math help ASAP:)

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
5 0

Answer:

f(-2) = 4

Step-by-step explanation:

The function has three definitions depending on the value of x.

You are looking for the value of the function at x = -2.

-2 is in the interval x <= -1, which is the first line of the definition of the function.

We use the first line of the definition of the function.

f(x) = -2x for x <= -1

f(-2) = -2(-2) = 4

Answer: f(-2) = 4

You might be interested in
Enter the value that belongs in the
son4ous [18]

Answer:

10

Step-by-step explanation:

sin30° = \frac{opposite}{hypotenuse} = \frac{10}{x}

5 0
3 years ago
A line has a slope of 7 and a y-intercept of -2
geniusboy [140]

Answer: it's -1

Step-by-step explanation: Hope this helps

Can I have brainliest?

5 0
3 years ago
A teacher claims that the proportion of students expected to pass an exam is greater than 80%. To test this claim, the teacher a
erica [24]

Answer:

z=-1.591

Step-by-step explanation:

Null Hypotheses,

H_0 : p=0.8\\H_a: p>0.80

So we use z-test for one population proportion (right-tailed test)

According to this informaton, we defined that

\alpha=0.05

z_c=1.64 (critical value)

So our Rejection region is R={z:z>1.64}

z=\frac{\bar{p}-p_0}{\sqrt{p_0(1-p_0)/n}} = \frac{0.755-0.8}{\sqrt{0.8(1-0.8)/200}}=-1.591

Not rejection.

6 0
3 years ago
1. What is the fourth term in the expansion of (x + 4y)^6?
aev [14]
For the fourth term r = 3
Fourth term = 6C3(x)^(6 - 3) (4y)^3 = 20x^3 (64y^3) = 1,280x^3y^3
7 0
3 years ago
7x(3x2) and (7x3)x2​
Elis [28]

Answer:

what is the question

Step-by-step explanation:

6 0
4 years ago
Other questions:
  • Help solve for a????
    14·2 answers
  • How many 5-person committees are possible from a group of 9 people if:
    12·1 answer
  • Find the volume of a cylinder that has a diameter of 10 inches and a height of 5 inches.
    15·1 answer
  • A square is always a parallelogram. true or false.
    14·1 answer
  • If an assembler, on average, makes one error for every 125 products assembled, approximately how many errors can he be expected
    12·2 answers
  • Find the prime factorization of 18 and 27
    10·1 answer
  • If you give me the correct answer then I will mark as brainliest​
    15·2 answers
  • From points A and B, the distance between which is 1020 mi, two trains left simultaneously towards each other. The speed of one
    9·1 answer
  • The marked price of a dozen of copies is Rs 600. If the shopkeeper allows 20% discount and then charges 10% VAT, how many copies
    8·1 answer
  • 7.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!