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swat32
3 years ago
11

Please help asap!' 9th grade math!!

Mathematics
1 answer:
Misha Larkins [42]3 years ago
5 0
2x + 3y = 9
3y = -2x + 9
y =-2/3+3


5x + y = - 10
y=-5x-10

5x - y = 7
- y = - 5x + 7
y = 5x - 7

slope is 5/1

y intercept is -7/1
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Please help ASAP!
Fudgin [204]

Amplitude:

we can see that

maximum value is 3

minimum value is -1

so,

A=\frac{max-min}{2}

A=\frac{3+1}{2}

A=2

Period:

It is time completed after which value repeats itself

so, we get

T=\pi -0

T=\pi

so,

option-D............Answer

5 0
3 years ago
What is the slope of a line that is perpendicular to the graphed line?
Lemur [1.5K]

Answer:

2

Step-by-step explanation:

To find the slope of the graphed line, you take two points. I have chosen (0, 4) and (8, 0)

The formula of a slope is (y value of second point -y value of first point) divided by (x value of second point -x value of first point):

\frac{0-4}{8-0} =-\frac{1}{2}

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The slope for a perpendicular line is 2.

6 0
3 years ago
Leon receives a birthday gift of $50 from his parents. Each week he saves $5.00. How many weeks will it take for him to save $12
lubasha [3.4K]

Answer:

14 weeks. the equation would be a.

Step-by-step explanation:

120-50=70   70/5=14 it will take him 14 weeks to get 120 if he saves 5 a week on top of the additional 50 he already has.

3 0
3 years ago
What is the surface area? 5 in 4 in 2 in
Dennis_Churaev [7]

I think the Answer is 76 in^2

Hope this helps

8 0
3 years ago
you go to Frontier City with your parents, brother and sister. The cost for adults is $12.50, and the cost for children is $8.00
noname [10]

9514 1404 393

Answer:

  cost for adults: 2×$12.50

  cost for children: 3×$8.00

  total cost: 2×$12.50 +3×$8.00

  $49.00

Step-by-step explanation:

Assuming I, my brother, and my sister qualify for children's tickets, we have ...

  cost for adults: 2×$12.50

  cost for children: 3×$8.00

  total cost: 2×$12.50 +3×$8.00

Evaluation:

  $25.00 +24.00 = $49.00 . . . . . . . multiplication is performed first

3 0
3 years ago
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