3 years ago

How can I make this equation into an ordered pair

1 answer:

3 0

I'd suggest re-wording your question:
"How do I find the ordered pair (x,y) that solves this system of linear equations?"

One way of doing that would be to substitute y=5x+7 into the other equation:

-3x - 2(5x+7) = -12. Solve this for x. Once you have a value for x, subst. that value into y=5x+7 to find the corresponding y value.

Then write the ordered pair (x,y). That's it.

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Find the area of an equilateral triangle with apothem 7 cm.

lbvjy [14]

So hmm check the picture below

using the 30-60-90 rule, we get that much.. .bear in mind, an equilateral triangle has all equal sides, and therefore, all equal angles, so each angle is 60°, run a median through it from the center, and you split it in half

$\bf \textit{area of an equilateral triangle}\\\\
A=\cfrac{s^2\sqrt{3}}{4}\qquad 
\begin{cases}
s=\textit{length of one side}\\
----------\\
s=14\sqrt{3}
\end{cases}\implies A=\cfrac{(14\sqrt{3})^2\sqrt{3}}{4}
\\\\\\
A=\cfrac{14^2\cdot 3\sqrt{3}}{4}\implies A=\cfrac{588\sqrt{3}}{4}\implies A=147\sqrt{3}$

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3 years ago

A car is traveling at 70 mi/hour. What is the car's speed in feet per second?

Pepsi [2]

70 miles per hour
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102.67 feet per second (rounded to the nearest hundredth)

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3 years ago

Read 2 more answers

If the shape of an object changes the perimeter will always change true or false

Ugo [173]

The answer is false due to the object is changes shape not size

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3 years ago

Car traveling at 262.5 miles in 31/2 hours what was the car speed

lidiya [134]

Its 75 miles per hour hope you understand

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