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exis [7]
3 years ago
5

Pls help on math hw for algebra

Mathematics
1 answer:
DiKsa [7]3 years ago
5 0

Answer:

1.01

2.03

3.01

4.03 hope its helps

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If cos x= 5/13 and sin x <0 find cos (x/2) and sin (2x)
taurus [48]
We know that

if cos x is positive
and
sin x is negative
so
the angle x belong to the IV quadrant

cos x=5/13
we know that
sin²x+cos²x=1-------> sin²x=1-cos²x------> 1-(5/13)²---> 144/169
sin x=√(144/169)-------> sin x=12/13
but remember that x is on the IV quadrant
so
sin x=-12/13

Part A) <span>cos (x/2)
cos (x/2)=(+/-)</span>√[(1+cos x)/2]
cos (x/2)=(+/-)√[(1+5/13)/2]
cos (x/2)=(+/-)√[(18/13)/2]
cos (x/2)=(+/-)√[36/13]
cos (x/2)=(+/-)6/√13-------> cos (x/2)=(+/-)6√13/13
the angle (x/2) belong to the II quadrant
so
cos (x/2)=-6√√13/13

the answer Part A) is 
cos (x/2)=-6√√13/13

Part B) sin (2x)
sin (2x)=2*sin x* cos x------> 2*[-12/13]*[5/13]----> -120/169

the answer Part B) is 
sin(2x)=-120/169
4 0
3 years ago
50 points please helpppp i dont have much time left to answer it:///
kvv77 [185]

Answer:

Step-by-step explanation:

The first one: The median is 58.

The second one: The maximum value is 58.

The third one: The upper quartile is 58.

The last one: The minimum value is 58.

4 0
2 years ago
What is 2x (to the second power)y (to the fourth power ) times 4x (squared) y (to the fourth power) times 3x over 3x (negative t
Oxana [17]
2x^2y^4*4x^2y^4*\frac{3xy^2}{3x^{-3}}= 8x^4y^8* \frac{3xy^2}{1}*\frac{3x^3}{1}= \\\\ =8x^4y^8*9x^4y^2= \\\\ =\boxed{72x^8y^{10}}
5 0
3 years ago
Which of the following statements best describes the effect of replacing the graph of y = f(x) with the graph of y = f(x − 9)? T
egoroff_w [7]

Answer:

The graph of y = f(x) will shift to the right 9 units.

Step-by-step explanation:

Despite some lack of clarity, because usually this equality is in terms of x and y. Let's do it.

Taking f(x) as its parent function in other words

y=f(x)

Testing some values:

x|y

0|0

1|1

2|2

Adding to the function  -9 units is to shift it to the right

y=f(x-9)

Testing some values to certify:

x|y

-9|0-9

-8|1-9

-7|2-9

4 0
2 years ago
ASAP someone please use the Pythagorean Theorem to solve for the missing side of these two right triangles.
solong [7]

Answer:

9) x = 5

10) x = 4

Step-by-step explanation:

a^2 + b^2 = c^2

9) 6^2 + x^2 = 8^2

  - 36 + x^2 = 64

  -  36            - 36

_______________

           x^2 = 28

Square root them

Squareroot x^2 is x

Square root 28 is 5.29 round is 5

so x = 5

*Correct me if im wrong*

10) 3^2 + x^2 = 5^2

     9 + x^2 = 25

  -  9              - 9

____________________

             x^2= 16

Square root them

square root of x ^2 is x and square root of 16 is 4

so x = 4

6 0
3 years ago
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