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Over [174]
3 years ago
5

.) 3x –9y=-18 What is the answer to this

Mathematics
1 answer:
Lena [83]3 years ago
5 0

Solving steps:

3x - 9y = -18

divide both sides by 3

3x - 18 + 9y

therefore, x = 6+3y

We cannot solve this further, therefore x = 6 + 3y

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This is pre calculus please help !Describe three ways to determine the measure of segment YZ.
Dmitry [639]
(1) Using trigonometric ratios:
sin(30) = \frac{YZ}{50}
YZ = 25

(2) Using Pythagoras' Theorem:
cos(30) = \frac{XY}{50}
50cos(30) = XY
50^{2} - 50^{2}cos^{2}(30) = YZ^{2}
2500 - 2500cos^{2}(30) = YZ^{2}
YZ = 25

(3) Using sine rule:
\frac{50}{sin(90)} = \frac{YZ}{sin(30)}
50 = \frac{YZ}{sin(30)}
50sin(30) = YZ
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3 years ago
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NemiM [27]

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3 years ago
Rina is 6x + 3:8 feet tall and Ryan is 5x + 1/8 feet tall. How much taller is Rina than Ryan?
Dimas [21]

Answer: Rina is x+\dfrac{1}{4} feet taller than Ryan.

Step-by-step explanation:

Given, the height of Rina = 6x+\dfrac{3}{8} feet

The height of Ryan = 5x+\dfrac{1}{8} feet

To find : How much taller is Rina than Ryan?

Clue : Rina is taller than Ryan.

For that , we need to check the difference of the height between Ryan and Rina

i.e. (height of Rina) - (height of Ryan)

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Hence, Rina is x+\dfrac{1}{4} feet taller than Ryan.

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