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
wariber [46]
3 years ago
13

A mechanic uses a mechanical lift to raise a car. The car weighs 10,200 N. The work required to do this was 22,440 J.

Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0
The answer is B thanks for asking
You might be interested in
Help me solve for the right triangle
AleksAgata [21]

Answers:

B = 50

a = 10.9

c = 17.0

================================================

Explanation:

This is a right triangle, so the acute angles are complementary, meaning they add to 90

B+40 = 90

B+40-40 = 90-40

B = 50

Also, because this is a right triangle, we can use trig ratios to compute the missing sides

tan(angle) = opposite/adjacent

tan(40) = a/13

a = 13*tan(40)

a = 10.908

a = 10.9

cos(angle) = adjacent/hypotenuse

cos(40) = 13/c

c*cos(40) = 13

c = 13/cos(40)

c = 17.0

note: make sure your calculator is in degree mode

7 0
3 years ago
You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele
Damm [24]

Answer:

The margin of error for this estimate is of 14.79 yards per game.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.093

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

This means that n = 20, s = 31.61

What is the margin of error for this estimate?

M = T\frac{s}{\sqrt{n}}

M = 2.093\frac{31.61}{\sqrt{20}}

M = 14.79

The margin of error for this estimate is of 14.79 yards per game.

3 0
3 years ago
Someone help me with this please
dmitriy555 [2]

Answer:

the answer is c=34

Step-by-step explanation:

use the pythogoras therom since there is a right angle triangle c2=a2+b2

hope this helped:)

8 0
2 years ago
Read 2 more answers
. Data was collected on shoulder girth and height of a group of 25 individuals. The mean shoulder girth is 107.20 cm with a stan
snow_lady [41]

Answer:

ion even know

Step-by-step explanation:

6 0
3 years ago
If x^3=64, what is the value of x?
pickupchik [31]

Answer:

x=4

Step-by-step explanation:

all you need to do is the 3rd root of 64

which is 4.

6 0
3 years ago
Other questions:
  • Below are two parallel lines with a third intersecting them
    12·1 answer
  • 905,238 In a word form
    10·1 answer
  • Solve the Following Proportions<br> 16/28=x/35<br> X=
    15·1 answer
  • The diagram above represents a biochemical process that occurs in a cell. The purpose of this process is to synthesize ?
    8·2 answers
  • an angle measures 58.4° more than the measure of its supplementary angle what is the measure of each angle
    7·2 answers
  • What is the reciprocal of -3 2/7 ? -3 7/2 -23/7 -7/23 3 2/7​
    14·2 answers
  • In 10 words or fewer, what other numbers do you think are in the domain of this function?​
    13·1 answer
  • Simplify √0.49<br><br><br><br> ............
    11·1 answer
  • Find the area of the shaded region. XTRA POINTS!!!! PLUS BRAILIEST!!!!!!
    9·1 answer
  • Which number completes the system of linear
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!