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
Natasha_Volkova [10]
4 years ago
11

Solving a right triangle (ROUND TO THE NEAREST TENTH)

Mathematics
1 answer:
Kay [80]4 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the given angles from 180 for B

B = 180° - (90 + 40)° = 180° - 130° = 150°

--------------------------------------------------------------

sin40° = \frac{opposite}{hypotenuse} = \frac{a}{21}

Multiply both sides by 21

21 × sin40° = a, thus

a ≈ 13.5 ( to the nearest tenth )

--------------------------------------------------------------

cos40° = \frac{adjacent}{hypotenuse} = \frac{b}{21}

Multiply both sides by 21

21 × cos40° = b, thus

b ≈ 16.1 ( to the nearest tenth )

You might be interested in
The product of Rick's height and
Zielflug [23.3K]
If you divide 64 by 4 then u get 16 so r is 16
4 0
3 years ago
Y = x2 + 12x + 30<br> 8x − y = 10
faltersainse [42]
So you need the solve for x and y ?

from 8x-y = 10,
y = 8x -10

Plug this in other equation.
8x-10 = x^2 +12x + 30

Re-arrange and combine like terms,
x^2 +12x -8x +30+10 = 0
x^2 +4x +40 = 0

This does not have any real solutions.
So there are no real values of x and y satisfying the 2 equations.

Are you sure the question is correct? or if this question belongs to complex numbers topic?
3 0
3 years ago
3 1/2-2 5/9 answer this please I need help
Tema [17]
The answer to your question is 17/18
6 0
4 years ago
Read 2 more answers
Congruent by identifying all congruent corresponding parts
Gennadij [26K]

Answer:

Corresponding Parts of Congruent Figures. The word corresponding refers to parts that match between two congruent triangles. You can identify corresponding angles and corresponding sides. First, name the corresponding angles.

Step-by-step explanation:


8 0
4 years ago
I need help with this if you get it right I will mark you brainlest
laiz [17]
The correct answer is A!

A. 1/2 is equal to .5 so multiply 2,000 by .5 and you’ll get $1000. She spends $900 on rent. Since $900 is less than $1000 she is not spending more than half of her income on rent. There for this statement is False

B. If you do 2,000 multipled by .15 (which equals 15%) then you’ll get $300 and that’s how much she spends on savings. So this statement is true.

C. 1/4 = .25 so if you do 2,000 multiplied by .25 you’ll end up with $500. The total cost of utilities, cable and groceries ( 120 + 80 + 320 ) = $520 and since $500 is less than $520 then she is spending more than 1/4 of her income on those expenses. Which makes this statement true.

D. 14% is = .14 so if you do 2,000 multiplied by .14 you’ll get $280. The total of cell phone and other expenses ( 100 + 180 ) = $280 so that is true.
8 0
3 years ago
Other questions:
  • Please help :) for this question
    5·1 answer
  • Jamal wants to buy a gift for a friend. He opened his piggy bank to find 3 one-dollar bills, 4 five-dollar bills, 7 ten-dollar b
    12·2 answers
  • According to the 2000 US Census, 138,053,563 Americans are male and 143,368,343 Americans are females. About what percent of the
    13·1 answer
  • Find the area of the triangle
    14·2 answers
  • Solve. 5a−12=−2 enter answer in the box<br><br> a=?
    5·1 answer
  • Determine which polynomial is a perfect square trinomial. (5 points)
    7·2 answers
  • A line passes through the point (6,5) and has a slope of<br> --<br> 3<br> 2
    12·1 answer
  • What is the measure of an interior angle of a regular 12-gon?
    10·1 answer
  • Round 61.7625 to the nearest cent hurry! My math is due today!
    15·2 answers
  • Hey guys, i would appreciate it if yall could help me out :)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!