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
Lubov Fominskaja [6]
3 years ago
9

4x-5.2y + 6y + 7.9x - 8x

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
5 0

Answer:

3.9x + 0.8y

Step-by-step explanation:

this is your answer

You might be interested in
Home Videos Inc. surveys 450 households and finds that the mean amount spent for renting or buying videos is P135 a month and th
adell [148]

SOLUTION:

Case: Hypothesis testing

Step 1: Null and Alternative hypotheses

\begin{gathered} H_0:\mu=P127.50 \\ H_1:\mu\leq P127.50 \end{gathered}

Step 2: T-test analysis

\begin{gathered} t=\frac{\hat{x}-\mu}{\frac{s}{\sqrt{n}}} \\ t=\frac{135-127.5}{\frac{75.25}{\sqrt{450}}} \\ t=2.144 \end{gathered}

Step 3: t-test with the significance level

\begin{gathered} t_{\alpha}=? \\ \alpha=0.05 \\ From\text{ }tables \\ t_{0.05}=1.654 \end{gathered}

Step 4: Comparing

t>t_{\alpha}

So tail to reject the null hypothesis. There is enough evidence at a 0.05 level of significance to claim that the mean spent is greater than P127.50.

Final answer:

Yes, there is evidence sufficient to conclude that the mean amount spent is greater than P127.50 per month at a 0.05 level of significance.

6 0
1 year ago
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
iren [92.7K]

Answer:

Step-by-step explanation:

The area of a sector has the formula

A_s=\frac{\theta}{360}*\pi r^2 Hopefully, this looks somewhat familiar to you. Theta is the central angle given as 75, r is the radius given as 4. Filling in:

A_s=\frac{75}{360}*(3.14)(4)^2 and simplifying that a bit to look less threatening, but not by much:

A_s=\frac{5}{24}(3.14)(16) and

A_s=\frac{251.2}{24}=\frac{157}{15}=10.466666666... Not sure how you're supposed to express your answer so I gave both the fraction and its decimal equivalency.

8 0
3 years ago
Ethan's taxable income is $87,525. Use this tax schedule to calculate the total amount he owes in taxes.
Reptile [31]
$18,617.75 is the answer
$87,525-$77,100=$10,425 (the amount over $77,100)
$10,425 x .28=$2,919 (the 28% taxed amount over $77,100)
$2,919+$15,698.75 (the already taxed amount in the chart)=$18,617.75



8 0
2 years ago
7 ^ 8 times 7 ^ 3 times 7 ^ 4 / 7 ^ 9 times 7 ^ 5​
Alex777 [14]

Answer:

7^8 =5764801 * 7^3 =343 * 7^4 =2401 ÷ 7^9 = 40353607 * 7^5 =16807

5764801 *343 *2401 ÷ 40353607 *16807

=4747561509943 ÷ 678223072849 = 7

4 0
3 years ago
What is 8,473,227 rounded to the nearest 100,000
monitta
8,500,000

Round the number 4 to 5 because the number 7 is behind it.
7 0
2 years ago
Other questions:
  • If 80% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separat
    11·1 answer
  • Hi !! help please :d I can't figure this one out
    6·2 answers
  • <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B3%7D%20%20%5Cdiv%20%20%5Cfrac%7B2%7D%7B5%7D%20%20%2B%20%20%5Cfrac%7B4%7D%7
    15·1 answer
  • The floor plan of a proposed auditorium shows a stage that measures 1.75 inches in width. The scale of the floor plan is 1in. =
    9·1 answer
  • How to solve foil methods give me a example please
    11·1 answer
  • What equivalent expression was used<br> 3y+4y​
    13·2 answers
  • Simplify 5/8-(-7/2)
    10·2 answers
  • Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5. (a) What is t
    15·1 answer
  • What is the measure of b?
    7·1 answer
  • Determine the length of the leg of 45°- 45°- 90° triangle with a hypotenuse length of 38.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!