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
kondaur [170]
3 years ago
5

Find the value of x round to the nearest tenth

Mathematics
2 answers:
pychu [463]3 years ago
7 0

Answer:

23.0 =x

Step-by-step explanation:

Assuming this is a right triangle

cos theta = adj/ hypotenuse

cos 23 = x/25

Multiply each side by 25

25 cos 23 = x

23.01262134 =x

To the nearest tenth

23.0 =x

Elina [12.6K]3 years ago
6 0
23.0 i’m sure that’s the answer
You might be interested in
Please help asap 25 pts + brainliest to right/best answer
patriot [66]

Look at the picture.

<h3>Answer: d. (-3, 1)</h3>

4 0
3 years ago
It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportat
Mrrafil [7]

Answer:

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 120  

Alternative hypothesis:\mu \neq 120  

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z  

Step-by-step explanation:

Data given and notation  

\bar X=114 represent the sample mean  

\sigma=22 represent the population standard deviation

n=36 sample size  

\mu_o =120 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

Part 1

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 120  

Alternative hypothesis:\mu \neq 120  

If we analyze the size for the sample is > 30 and we  know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z  

8 0
3 years ago
The lengths of two sides of a triangle are 5 inches and 16 inches find the range of possible lengths for the third side
Gnoma [55]
Ok well you would use pathagorean there so A2+B2=C2
7 0
3 years ago
Solve the following system of equations using the substitution method.
Novay_Z [31]
X=2y
2x+5y=9

substitute the x=2y into the second equation
2(2y)+5y=9
multiple the 2y by 2. 4y+5y=9
combine like terms. 9y=9
divide the 9 out from both sides. y=1
plug the y back into the first equation
x=2(1)
multiply. x=2

your answer is: x=2
y=1
7 0
3 years ago
Solve the following equation algebraically:
Reptile [31]

Answer:

Step-by-step explanation:

divide by 3: x^2 = 4

Think you can finish that off now?

5 0
3 years ago
Other questions:
  • Adaline is designing a garden in the shape of a 45º-45º-90º triangle, with an area of 32 ft2. To the nearest foot, how much fenc
    8·2 answers
  • A person stands at the window of a building so that his eyes are 12.6m above the level ground. An object is on the ground 58.5m
    15·1 answer
  • YOU RRR MEH HEROOOZZ! PUHLEASZEEE ITS 10:30pm!!
    9·1 answer
  • Started at 15 degrees and dropped 1/2 degrees each minute
    8·1 answer
  • Which of the following is equal to the square root of the cube root of 2?
    7·1 answer
  • Complete each statement then state the property or properties illustrated by each statement on
    8·1 answer
  • Find the area of this trapezoid. The Bases are 8<br> inches and 2.2 inches. The height is 4 inches.
    13·1 answer
  • Louisa used Downtown Taxi, which charges $2 for the first mile and $1.10 for each additional mile. Pietro used Uptown Cab, which
    8·1 answer
  • Who crreated solved one of the hardest mathe questions in the world.
    8·2 answers
  • What is a equivalent expression to 4(5t - 7)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!