2 years ago

Consider the points below. P(â1, 4, 1), Q(0, 6, 2), R(4, 3, â1)

Mathematics

1 answer:

user100 [1]2 years ago

4 0

Answer:

B. Find the area of the triangle PQR.

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3x + 2 y = 8 5x + 2 y = 12 What is the solution of the system of equations shown above?

Arisa [49]

Answer:

x = -3

Step-by-step explanation:

First solve it:

Subtract the x's from both sides

2y = -3x +8

2y = -5x +2

Divide by two

y= -1.5x + 4

y = -2.5x +1

set them equal to each other:

-1.5x +4 = -2.5x +1

Add 2.5 x to both sides

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x +4 = 1

subtract 4 from both sides

x = -3

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2 years ago

What is 6.25x + 7.50= 26.25

GarryVolchara [31]

Answer:

X = 3

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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The hourly wage is $7.50. John worked 7 hour. How much did he earn?

serg [7]

Answer:

52.5

Step-by-step explanation:

7.50 x 7

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3 years ago

What is the answer to K/2+1-1k=-2k

Mazyrski [523]

$\dfrac{k}{2}+1-1k=-2k\\\\\dfrac{1}{2}k+1-k=-2k\\\\\left(\dfrac{1}{2}k-k\right)+1=-2k\\\\-\dfrac{1}{2}k+1=-2k\qquad\text{subtract 1 from both sides}\\\\-\dfrac{1}{2}k=-2k-1\qquad\text{add 2k to both sides}\\\\1\dfrac{1}{2}k=-1\qquad\text{convert the mixed number to improper fraction}\\\\\dfrac{1\cdot2+1}{2}k=-1\\\\\dfrac{3}{2}k=-1\qqua\text{multiply both sides by}\ \dfrac{2}{3}\\\\\boxed{k=-\dfrac{2}{3}}$

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3 years ago