3 years ago

If y is 21 and x is 6 what is the direct variation equation

Mathematics

1 answer:

balu736 [363]3 years ago

7 0

Answer:

6/24

Step-by-step explanation:

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When a certain number is divided by 4, the answer is 160 with a remainder of 2. What is the number?

Veseljchak [2.6K]

X/4=160R2 X=642. I hope I helped you out. 160x4=640+2=642.

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PLEASEE HELP!! Find the area of the kite.

aev [14]

Answer:

Step-by-step explanation:

Area of kite is Area of triangles. Area is 6+3=9

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On the highway, a car can travel 21 miles per gallon of gas. If the car travels for 4 hours on the highway at a rate of 65 miles

lora16 [44]

Answer:

12.4 gallons

Step-by-step explanation:

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2 years ago

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EXPLAIN THE ERROR Cody was given two points (1/2,4) and (2/3,1), on a line and asked to create a linear equation in standard for

inessss [21]

Answer:

Cody made a mistake when calculating the slope of the line and this affected every other steps after than.

She divided -3 by 6 instead of -3 by 1/6

Step-by-step explanation:

Given

$(x_1,y_1) = (\frac{1}{2},4)$

$(x_2,y_2) = (\frac{2}{3},1)$

<em>See attached for steps</em>

Required

Explain Cody's error

<em>Cody made a mistake when calculating the slope of the line and this affected every other steps after than.</em>

See Proof

Slope (m) is calculated as thus:

$m =\frac{y_2 - y_1}{x_2 - x_1}$

$m =\frac{1 - 4}{\frac{2}{3} - \frac{1}{2}}$

$m =-\frac{ 3}{\frac{1}{6}}$

$m = -3/\frac{1}{6}$

$m = -3 * 6$

$m = -18$

This is in contrast to $m = -\frac{1}{2}$ , calculated by Cody

Solving further to determine the equation.

$y - y_1 = m(x - x_1)$

Where

$(x_1,y_1) = (\frac{1}{2},4)$

$m = -18$

$y - 4 = -18(x - \frac{1}{2})$

$y - 4 = -18x + 9$

Collect Like Terms

$y + 18x = 9 + 4$

$y + 18x = 13$

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3 years ago

Find the measure of angle X in the figure below

alexandr1967 [171]

Answer:

50 degrees

Step-by-step explanation:

65 times 2=130

180-130=50

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