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
spin [16.1K]
3 years ago
7

ITS A MULTI CHOSE QUESTION!! And help as fast as you can! Thank you

Mathematics
1 answer:
Montano1993 [528]3 years ago
8 0

Answer:

Step-by-step explanation:

You might be interested in
I need help! Greatly appreciated if you do.
kodGreya [7K]
11. 1/4
12.1/10
13.9/40
14.3/8
15.4/5
8 0
3 years ago
Verify the identity. cos (x - y) - cos (x + y) = 2 sin x sin y
nignag [31]
Let's start from the left side, and manipulate it to get the right side, which would prove the identity.

We know that:

i) \displaystyle{ \cos(x-y)=\cos x \cos y+\sin x \sin y

ii) \displaystyle{ \cos(x+y)=\cos x \cos y-\sin x \sin y.

From the above fundamental identities, we can rewrite the left hand side as:

\displaystyle{ \cos x \cos y+\sin x \sin y-(\cos x \cos y-\sin x \sin y)=


\displaystyle{ \cos x \cos y+\sin x \sin y-\cos x \cos y+\sin x \sin y=2\sin x \sin y,

which is what we needed to show.
5 0
3 years ago
If f(x) = 2x – 3 and g(x) = 4x + 5, what is (f • g)(x)?
lorasvet [3.4K]

Answer:

Place the f(x) expression 2x-3 into the x in the g(x) expression 4x+5, so it will be 4(2x-3)+5; you can expand it out if you want

6 0
3 years ago
Read 2 more answers
Find the value of x. Round to the nearest tenth
levacccp [35]

Answer:

70.5

Step-by-step explanation:

Refer to attached image

8 0
3 years ago
Someone help Please and make sure it’s right :)
Viktor [21]

Answer:

Step-by-step explanation:

its 9

8 0
3 years ago
Other questions:
  • How do you write the following expanded number in standard notation?
    14·1 answer
  • What is 3/8 written as a percent? 3/8 = 0.375 * 100 = 37.5%
    10·2 answers
  • Two-thirds of a number is equal to 20. What is the number?
    7·1 answer
  • 3 · 3^2 + 8 ÷ 2 − (4 + 3)
    14·1 answer
  • If x and y are positive integers and x+y+xy=54, then x+y equals what
    11·1 answer
  • Leon scored 20 points in yesterday's
    10·1 answer
  • Number 7. 8. 9. 10. I need this done pronto I have 5 minutes til my test is over. That’s why I give 40 points
    6·1 answer
  • Find x.<br> (4x + 7)°<br> (2r + 5)°
    11·1 answer
  • Work out<br>(3/4) -2 (1/-3) = (_/_)​
    6·1 answer
  • The surface area for a rectangular prism with a square base is given by the expression. 2s2+4sh, where side s is side length of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!