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
SpyIntel [72]
3 years ago
12

Find the measure of ZSTV. S 3b 15b + 18 U T

Mathematics
1 answer:
Aleks [24]3 years ago
7 0

Answer:

<stv=153

Step-by-step explanation:

stu+stv=180 (being a straight angle)

3b +15b+18=180

18b=180-18

b=162/18

b=9

now

<stv=15b+18

=15 × 9 +18

=135+18

=153

<stv=153°

You might be interested in
Triangle ABC is rotated counterclockwise using the origin as the center of rotation. The preimage and image are shown in the gra
Kisachek [45]

Answer:

im not 100% sure but to me it looks like it could be 225

7 0
3 years ago
Read 2 more answers
Why do we need to find the average of something
daser333 [38]

Answer:

To know what is the average of it

Step-by-step explanation:

7 0
3 years ago
How much material was required for each dresses of the same size if it took 5 1/2 yards for both ?
ki77a [65]

Answer:

2.75 yards

Step-by-step explanation:

If it took both (meaning 2) dresses a certain amount, half of that amount is one dress. So, we need to divide 5 1/2 by 2

*1/2 of 1 = 0.5

0.5 + 5 = 5.5

5.5 / 2 = 2.75

(2.75 also equals 2 3/4)

7 0
2 years ago
For positive acute angles A and B, it is known that cos A= 20/29 and tan B= 11/60. Find the value of cos(A + B) in simplest form
jek_recluse [69]

Answer:

\displaystyle \cos(A + B) =\frac{969}{1769}

Step-by-step explanation:

We are given that:

\displaystyle \cos A=\frac{20}{29}\text{ and } \tan B=\frac{11}{60}

Where A and B are positive acute angles.

And we want to find cos(A + B).

Recall that cosine is the ratio of the adjacent side to the hypotenuse. Using this information, find the opposite side with respect to Angle A:

o=\sqrt{29^2-20^2}=21

Tangent is the ratio of the opposite side to the adjacent side. Find the hypotenuse with respect to Angle B:

h=\sqrt{11^2+60^2}=61

In summary:

With respect to Angle A, the adjacent side is 20, opposite is 21, and the hypotenuse is 29.

With respect to Angle B, the adjacent side is 60, the opposite is 11, and the hypotenuse is 61.

We can rewrite our expression as:

\displaystyle \cos(A+B)=\cos A\cos B-\sin A\sin B

Using the above information, substitute in the appropriate values. Note that since A and B are positive acute angles, all trigonometric values will be positive. Hence:

\displaystyle \cos(A + B)=\left(\frac{20}{29}\right)\left(\frac{60}{61}\right)-\left(\frac{21}{29}\right)\left(\frac{11}{61}\right)

Simplify:

\displaystyle \cos(A + B) =\frac{1200-231}{1769}=\frac{969}{1769}

3 0
2 years ago
Solve for x. <br> Need help please
finlep [7]

Answer:

x=-11

Step-by-step explanation:

the (x+14) line is half of the (17+x) line, so in order to solve this we would have to set it up like this:

2(x+14)=17+x

distribute

2x+28=17+x

x=-11

3 0
2 years ago
Read 2 more answers
Other questions:
  • Help me just pls help me I needed so bad
    13·1 answer
  • The data in the table are linear. Use the table to find the slope.
    9·2 answers
  • How to find slope on a graph?
    5·1 answer
  • Each year lizzy e's school purchases students agenda books, which are sold in the school store.This year, the school purchased 3
    13·1 answer
  • Describe how (23)(2-4) can be simplified. (3 and -4 are powers i dont have the knowledge to make the -4 and 3 tiny and stay by t
    12·2 answers
  • (5x^2+8x+18)+(11x^2-17x-7)
    6·2 answers
  • There are 4 times as many alligators as crocodiles. If the total number of alligators and crocodiles is 40, how many alligators
    8·1 answer
  • A wood has pine, oak and ash trees.
    9·1 answer
  • Help mehhhh, Ill mark brainliest TnT
    15·1 answer
  • A pail holds 3 1/2 gallons of water. How much is this in cups?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!