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
fiasKO [112]
3 years ago
8

Find the value. Please

Mathematics
1 answer:
IgorC [24]3 years ago
7 0
The cosine ratio is adjacent leg divided by the hypotenuse.
The hypotenuse in a right triangle is the longest side and it is opposite the right angle.
An adjacent leg is the side that has an endpoint that is at the vertex of the angle and the other endpoint is at the vertex of the right angle.

cos A = \frac{12}{20} =  \frac{3*4}{5*4} = \frac{3}{5}
ANSWER: cosA= \frac{3}{5}


You might be interested in
The data set represents a progression of hourly temperature measurements.Use the regression equation to predict the temperature
zimovet [89]
I will attach google sheet that I used to find regression equation.
We can see that linear fit does work, but the polynomial fit is much better.
We can see that R squared for polynomial fit is higher than R squared for the linear fit. This tells us that polynomials fit approximates our dataset better.
This is the polynomial fit equation:
T(h)=20.2-3.6h-0.875h^2
I used h to denote hours. Our prediction of temperature for the sixth hour would be:
T(6)=20.2-3.6(6)-0.875(6)^2=-32.9
Here is a link to the spreadsheet  (<span>https://docs.google.com/spreadsheets/d/17awPz5U8Kr-ZnAAtastV-bnvoKG5zZyL3rRFC9JqVjM/edit?usp=sharing)</span>

4 0
3 years ago
Read 2 more answers
Is it 1 solution, no solution or infinite solution? <br> -28 = -7(3x + 4) + 21
prohojiy [21]

x = 1 because -7(3x + 4) must be -49 so 3x + 4 must me 7 so x = 1

5 0
3 years ago
-5, 20, -80, 320, ... is a geometric sequence a. Find the common ratio, b. Write its recursive rule c. Write its explicit rule.W
mario62 [17]

a.

In order to find the common ratio, we just need to divide a term by the term that comes before it.

So using the terms 20 and -5, we have:

\text{ratio}=\frac{20}{-5}=-4

b.

The recursive rule can be found with the formula:

a_n=a_{n-1}\cdot q

Where an is the nth term and q is the ratio. So we have:

a_n=a_{n-1}\cdot(-4)

c.

The explicit rule can be written as:

a_n=a_1\cdot q^{n-1}

Where an is the nth term, a1 is the first term and q is the ratio. So:

a_n=-5\cdot(-4)^{n-1}

5 0
1 year ago
The sum of double a number and 8
olya-2409 [2.1K]
The answer is 10...............
8 0
3 years ago
Similar or Like Terms are two monomials that are exactly alike except for their
grandymaker [24]
Fales for your answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • Hi, help a sis out please :( thank you!!
    10·2 answers
  • A cylinder has a base area of 28.2 m2 and a height of 3.1 m. Estimate the volume of the cylinder. A) 31 m3 B) 31 m2 Eliminate C)
    14·2 answers
  • What is 5/9 equals to
    6·2 answers
  • What is the measure of an angle if it is 70 less than three times its own complement?
    15·2 answers
  • How much would I have to deposit now in order to have 150,000 in 18 years
    5·1 answer
  • Please help
    7·1 answer
  • The equation below represents a linear relationship between x and y. Describe what happens to the y value as tue x value increae
    8·2 answers
  • (6)
    5·1 answer
  • Find the sum of the first 35 terms of the following series, to the nearest integer.<br> 3, 11, 19...
    9·1 answer
  • Use the drawing tools to graph the solution to this system of inequalities on the coordinate plane.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!