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
xxTIMURxx [149]
2 years ago
9

Given: a and b are first-quadrant angles, sin a = 5/13 , and cos b = 3/5 , evaluate cos(a + b).

Mathematics
1 answer:
Tanzania [10]2 years ago
7 0

Step-by-step explanation:

please mark me as brainlest

You might be interested in
F(x)=-3/5x+k and if f(30)=-11 what is the value of k
Kruka [31]

Answer:

k=20.

Explanation: First we find where f(x) has its local extrema: f'(x)=3x2−10x+3. The critical points are roots of the equation: 3x2−10x+3=0.

6 0
3 years ago
I HAVE AN EXAM PLEASE HELP ME GET THE ANSWER
sesenic [268]
Answer: The ladder is 5.3 m long
Step by step solution
1. Draw out the scenario, ie a right triangle where the hypotenuse is the ladder, the wall is 4.5m and the angle the ladder and the ground makes 58 degree.

2. Soh, Cah, Toa
The wall is opposite, the ground is adjacent, and the ladder is hypotenuse
Sine (58) = 4.5/h

3. Solve for hypotenuse
h * sine (58) = 4.5
h = 4.5/sine (58)
h = ~ 5.3 m
3 0
3 years ago
8x^3a^2+8x^2a^3<br> Find the greatest common factor
frutty [35]

Answer:8x^2a^2

Step-by-step explanation:

4 0
3 years ago
A square prism measuring 4 miles along each edge of the base and 2 miles tall.<br> Find the volume
andrey2020 [161]

Answer:

V = 32

Step-by-step explanation:

V = b^2(h)

V= (4)^2 (2)

V = 32

5 0
3 years ago
What fraction of a hectare is 600 meter squared
nalin [4]

0.06 or 6/100

six hundredths

5 0
3 years ago
Other questions:
  • Divide £72 cm in the ratio 2:3:1
    15·1 answer
  • Model the equation a over 8 plus 1 equals 4
    7·1 answer
  • In a sphere, if the radius is tripled, how much more volume do you have?
    11·1 answer
  • how many outfits of shoes does a female have for school if she has the choice of 2 pairs of shoes, 4 skirts, and 5 tops in her w
    12·1 answer
  • What set of transformations is performed on ABCD to form A′B′C′D′?
    7·1 answer
  • No idea where to even begin
    10·1 answer
  • Give a geometric description of the following system of equations.a. 2x−4y=12 −3x+6y=−15.b. 2x−4y=12 −5x+3y=10.a. 2x−4y=12 −3x+6
    11·1 answer
  • a student finished 8 of her homework problems in class If the ratio of problems she finished two problems she still have left wa
    8·1 answer
  • Help me!<br> solve for w
    8·2 answers
  • Y = x - 3 and y = 7x + 3 on a graph
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!