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
I am Lyosha [343]
2 years ago
13

Pls Help and It´s not that hard

Mathematics
1 answer:
Inessa05 [86]2 years ago
5 0

Answer:

1 and 2 /15 i think

Step-by-step explanation:

You might be interested in
Cos(x + y) + cos(x − y) = 2 cos(x) cos(y)
Alex17521 [72]
   
\texttt{We use formula: }~~~  \boxed{\cos(x\pm y) = \cos (x) \cos (y) ~\mp ~\sin (x) \sin (y)}\\\\
\cos(x + y) + \cos(x - y) =\\\\
= \underbrace{\cos (x) \cos (y) -\sin (x) \sin (y)}_{\cos(x + y) } +\underbrace{\cos (x) \cos (y) +\sin (x) \sin (y)}_{\cos(x - y)} =\\\\
=\cos (x) \cos (y)+\cos (x) \cos (y)-\sin (x) \sin (y)+\sin (x) \sin (y)=\\\\
=\cos (x) \cos (y)(1+1) + \sin (x) \sin (y)(-1+1) = \\\\
=2\cos (x) \cos (y) + 0\sin (x) \sin (y) = \boxed{\boxed{2\cos (x) \cos (y)}}



6 0
2 years ago
Read 2 more answers
How to solve (112+3/4(252-112),62+3/4(142-62)
Ilia_Sergeevich [38]
(112+3/4(140),62+(80)
(112+105)62+60
(217)122

5 0
3 years ago
-nr+70&lt;50 show answer for N<br><br>4b-2d=25 show answer for D
horsena [70]

Answer:

-nr+70 <50

or,-nr+70-50 <50-50

or,20-nr <0

or,20-nr-20<-20

or,-nr<-20

or,nr/n<20/n

or,r <20/n

same as

4b-2d=25

or,4b=25+2d

or(4b-25)/2=d

Step-by-step explanation:

we must try to solve equation for answer

7 0
3 years ago
Use a table of values to find the solution to the equation ƒ(x ) = h(x ) where f(x)=1/x+1 and h(x ) = 2x + 3. Show your work
Luden [163]
<span>f(x)=1/(x+1)

h(x ) = 2x + 3

</span><span>I proceed to make the table, placing different values ​​of X until we get  

f (x) = g (x)   (</span>see the attached table)
<span>
The solutions to this problem are (-0.5, 2) and (-2,-1)</span>

3 0
2 years ago
Read 2 more answers
The diameter of a circle is 55 inches.<br><br> ​<br><br> ​Find the length of its radius.
AysviL [449]

Answer:

27.5

Step-by-step explanation:

Radius is half the diameter of a circle so just divide 55 by 2.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Kim's recipe for fruit punch calls for 3 cups fruit punch syrup to 4 cups of water. Tammy's recipe for fruit punch calls for 5 c
    7·1 answer
  • Solve for B. <br><br> A = 3(B + C)
    6·2 answers
  • Does the graph show a proportional relationship? explain. ​
    15·1 answer
  • I need help on this question
    7·2 answers
  • Write an algebraic expression for the verbal expression. the product of 13 and x
    5·1 answer
  • Write a unit rate for the situation. Show work
    8·1 answer
  • Line g is dilated by a scale factor of 1/2 from the origin to create line g'. Where are points E' and F' located after dilation,
    7·1 answer
  • Two points on a line are ( 3, 8 )and ( -3, 2 ). What is the slope of the line?
    9·1 answer
  • What is the value of z, rounded to the nearest tenth? Use the law of sines to find the answer. 2. 7 units 3. 2 units 4. 5 units
    6·1 answer
  • Write 1% as a fraction
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!