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siniylev [52]
3 years ago
10

I just need some help on a few math questions. i'm very bad at math sorry :(

Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:

Q1) D

Q2) A

Q3) A

Q4) I'm sorry I can't figure this one out

Q5)2.7

Step-by-step explanation:

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Graph: f(x) = -3sin (x/2 - π/4)
charle [14.2K]
This sine function has the form y = f(x) = a sin (bx + c), where |a| is the amplitude, b is the frequency, and c determines the phase shift.

The period of this sine curve is 2 pi/b, or (in this problem) 2 pi/(1/2).

The phase shift of this curve is -c/b, or -(pi/4)/(1/2).  Simplify this.

The amplitude is |-3|, or just 3.

Draw a set of coordinate axes.  Draw light horizontal lines through y=3 and y=-3.  These are the max and min. values of this sine function.

Plot the phase shift on your x-axis.

Your sine function will begin at (phase shift value, 0) and continue for one period.  Add the period to the phase shift value.  Draw a sine curve beginning and ending at these two x-values.

I encourage you to share your calculations and to sketch the graph described here.  Then I could give you more specific feedback on your work.  Good luck!


3 0
3 years ago
Please help me with this I will really appreciate it thank you! It’s geometry
Phoenix [80]

Answer:

150 degrees

Step-by-step explanation:

90+30=120.

Since angle afc is bisected by line bf, that means that the angles formed equal each other. Since the total angle measurement is 180 degrees, we do 180-120=60. 60/2=30. 120+30=150 degrees.

6 0
3 years ago
2x-2=2(2x-11) solve for x
Mkey [24]

Instead of distributing 2, we can actually divide both sides by 2:

x - 1 = 2x - 11

Isolate x:

x = 10

7 0
3 years ago
Read 2 more answers
6-4x-5x=-57, pls i need help
Sonja [21]

Answer: 7

Step-by-step explanation:

6-4x-5x=-57

6 -9x= -57

9x= 57+6

9x= 63

Divide both sides by 9

x= 7

7 0
3 years ago
Read 2 more answers
Whats has the same slope of 6x-3y=9
Crank

Answer:


Step-by-step explanation:

when you put it into slope intercept form you get

y=2x-3

2 is the slope, so

y=2x+3 would have the same slope which means these lines are parallel.

6 0
3 years ago
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