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
Irina18 [472]
4 years ago
14

Please help will mark Brainly

Mathematics
1 answer:
SVETLANKA909090 [29]4 years ago
5 0

Answer: C

Step-by-step explanation:

We are given the information that:

  1. The airplane is at 50,000 feet
  2. It descends 2,500 feet in 1 minute
  3. x = minutes

For  ease of solving this question, let's set the number of minutes (x) to 1.

  • In one minute, we know the plane will drop to 47,500 feet. (50,000 - 2,500(x))

There are multiple ways to write this equation bu shifting around negative and positive values. Another way to write this equation would be (-2,500(x) + 50,000). That would be choice C.

Try it out~

(-2,500(x) + 50,000)\\ (-2,500(1) + 50,000)\\ (-2,500 + 50,000)\\47,500

It works, so our answer is C.

You might be interested in
The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed a s
Molodets [167]

Answer:

We conclude that there has been a significant decrease in the average price homes.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $220,000

Sample mean, \bar{x} = $210,000

Sample size, n = 81

Significance level, α = 0.051

Population standard deviation, σ =  $36,000

First, we design the null and the alternate hypothesis

H_{0}: \mu = 220000\text{ dollars}\\H_A: \mu < 210000\text{ dollars}

We use One-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{210000 - 220000}{\frac{36000}{\sqrt{81}} } = -2.5

Calculating the p-value from the z-table, we have:

P-value = 0 .00621

Since,  

P-value < Significance level

We reject the null hypothesis and accept the alternate hypothesis. Thus, there has been a significant decrease in the average price homes.

5 0
3 years ago
Hiiioo! Can someone please help me with this❤️❤️
kotykmax [81]

Answer:

Hello! Your answer would be, E)

Step-by-step explanation:

Hope I helped! Ask me anything if you have questions! Brainiest plz. Hope You make a 100%! Have a nice day! -Amelia♥

Is this a multiple choice?

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%2B%2016x%20%2B%2010%20%3D%200" id="TexFormula1" title=" {x}^{2} + 16x
Sergio039 [100]
Answer :-0.65 , -15.34
4 0
3 years ago
What is the difference between a theorem and a proof
sertanlavr [38]

Answer: it should be C

Step-by-step explanation:

proof is (countable) an effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial while theorem is (mathematics) a mathematical statement of some importance that has been proven to be true

5 0
3 years ago
Please answer this I don't understand how to do it thanks
Mars2501 [29]

Answer:

The answer is 8.6×10¹⁴

Step-by-step explanation:

You can evaluate it :

(4.3 \times  {10}^{8} ) \times (2.0 \times  {10}^{6} )

= (4.3 \times 2.0) \times ( {10}^{8}  \times  {10}^{6} )

= 8.6 \times  {10}^{8 + 6}

=8.6 \times  {10}^{14}

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the slope of the line represented by the equation 5 y-10 x = -15?
    12·1 answer
  • Marta's fruit stand sold x oranges on Thursday and twice as many on Friday. All together, on both days, she sold 108.
    8·2 answers
  • Suppose the Sunglasses Hut Company has a profit function given by P ( q ) = − 0.02 q 2 + 5 q − 30 , where q is the number of tho
    8·1 answer
  • How do we show that two lines are parallel when using slope? How do we show they are perpendicular when using slope?
    11·1 answer
  • Help plzz I need the answer real quick plz type it out don't send a file to me!!
    12·1 answer
  • Square of 5x+1 by 5x.Please help mee​
    8·2 answers
  • What do you say to misbehaving polor bear?​
    11·1 answer
  • Suppose f(×) = 2^×, sketch a graph of f(×) and f^-1(×)​
    10·1 answer
  • Can someone please help me with my homework
    11·1 answer
  • What do 32x4x3x2÷5 equal 20 points and brainliest if right.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!