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
JulijaS [17]
3 years ago
13

Solve -20.3-14.34=__

Mathematics
1 answer:
maw [93]3 years ago
6 0

Answer:

-34.64

Step-by-step explanation:

Nothing to "solve" for here ... the proper term would be "combine."

-20.3-14.34  becomes:

-20.3

-14.34

---------

-34.64

You might be interested in
Two punds of cheese cost 8.40. show the cost of 1,2,3,and 4 pumds of cheese. Is there a direct variation
larisa [96]

Answer: 1 = 4.20, 2 = 8.40 3 = 12.60 4 = 16.80

This is a direct variation.


Step-by-step explanation:


4 0
2 years ago
PLEASE HELP QUESTION: What is the midpoint of the line containing the points X(4,-1) and Y(-4,1)?
11Alexandr11 [23.1K]

Answer:

( D ) , ( 0 , 0 )

6 0
3 years ago
Read 2 more answers
How do i find out a
drek231 [11]

Answer:

it must be

\frac{c}{8\pi \: b}

7 0
3 years ago
The mean throwing distance of a football for a Marco, a high school freshman quarterback, is 40 yards, with a standard deviation
Phoenix [80]

Answer:

a) One-tailed t-test about a mean.

b) The null hypothesis would be that there is no significant evidence to conclude that the adjusted grip leads to more distance on the thrown ball.

While the alternative hypothesis is that there is significant evidence to conclude that the adjusted grip leads to more distance on the thrown ball.

Mathematically,

The null hypothesis is represented as

H₀: μ ≤ 40 yards

The alternative hypothesis is given as

Hₐ: μ > 40 yards

c) p-value = 0.00621

d) The graph is presented in the attached image. The p-value obtained is less than the significance level at which the test was performed, hence, we accept the alternative hypothesis and say that there is significant evidence to conclude that the adjusted grip leads to more distance on the thrown ball.

Step-by-step explanation:

a) This test checks if the adjusted grip leads to more distance than before on the ball throws.

So, it is a one tailed test (testing only in one direction), a t-test about a mean.

b) For hypothesis testing, the first thing to define is the null and alternative hypothesis.

The null hypothesis plays the devil's advocate and usually takes the form of the opposite of the theory to be tested. It usually contains the signs =, ≤ and ≥ depending on the directions of the test.

While, the alternative hypothesis usually confirms the the theory being tested by the experimental setup. It usually contains the signs ≠, < and > depending on the directions of the test.

Since this question aims to test if adjusting the grip leads to more distance on the ball thrown.

The null hypothesis would be that there is no significant evidence to conclude that the adjusted grip leads to more distance on the thrown ball. That is, The adjusted grip leads to a distance lesser than or equal to the previous distance on the thrown ball.

While the alternative hypothesis is that there is significant evidence to conclude that the adjusted grip leads to more distance on the thrown ball.

Mathematically,

The null hypothesis is represented as

H₀: μ ≤ 40 yards

The alternative hypothesis is given as

Hₐ: μ > 40 yards

c) To do this test, we will use the z-distribution because there is information on the population standard deviation.

So, we compute the test statistic

z = (x - μ₀)/σ

x = 45 yards

μ₀ = 40 yards

σ = standard deviation = 2 yards

z = (45 - 40)/2 = 2.50

The p-value for a one-tailed test for z-test statistic of 2.50 is 0.00621

d) The sketch of the graph is presented in the attached image.

The interpretation of p-values is that

When the (p-value > significance level), we fail to reject the null hypothesis and when the (p-value < significance level), we reject the null hypothesis and accept the alternative hypothesis.

So, for this question, significance level = 0.05

p-value = 0.00621

0.00621 < 0.05

Hence,

p-value < significance level

This means that we reject the null hypothesis & accept the alternative hypothesis and say that there is enough evidence to conclude that the adjusted grip leads to more distance on the thrown ball.

Hope this Helps!!!

5 0
3 years ago
You mid morning break begins at 9:45 am and lasts for 10 minutes. you work for 2 hours and 10 minutes until your lunch break. wh
TiliK225 [7]
9:45 + 10 = 9:55
9:55 + 2:00= 11:55 This is what I got
8 0
3 years ago
Other questions:
  • Davis can read 4/5 of a page in one minute. How many pages can he read in 4 1/2 minutes?
    12·1 answer
  • The volume of a prism changes from 20 to 540 after a dilation. what was the scale factor of the dilation?
    9·2 answers
  • A square has an area of 81 inches. If the side lengths of the square are each multiplied by 5, find the area of the new square.
    15·2 answers
  • how much would $100 invested at 6% interest compounded mothly be worth after 20 years? round answer to the nearest cent
    12·2 answers
  • How to write 3,801,440 in expanded form
    8·2 answers
  • Find the probability of drawing a 10, replacing it, and drawing an ace.
    9·1 answer
  • PLEASEEEE ANSWER THISSS<br> Solve for B in the equation: A = 5A^4B
    12·2 answers
  • Help please :) ........................................
    14·1 answer
  • Find the coordinates of the vertices of the triangle after a rotation
    13·1 answer
  • How do you know when an expression is its simplest form
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!