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Zigmanuir [339]
4 years ago
5

Write an equation with two variables that represents a real word situation

Mathematics
1 answer:
KATRIN_1 [288]4 years ago
8 0
<span><span><span>Solve for<em> t</em>. </span> <span><em>d</em> = <em>rt heres a real word question. but im not sure if you can use this exact one :)</em></span></span></span>
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Help please? A system of linear equations is graphed. Which ordered pair is the best estimate for the solution to the system? A.
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Answer:

B. (-4, 2½)

Step-by-step explanation:

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3 years ago
I’ve been stuck on question 1 for a while, can you guys help?
MakcuM [25]

Answer:

h=20**

**The picture is not accurate for this problem.

Step-by-step explanation:

I would use Pythagorean Theorem to setup two equations since there are two triangles with no angle information.

Let BC=x+(99-x) where x is equal to the first partition of BC (reading from left to right) and (99-x) is equal to the second partition of BC (reading from left to right).

We have the following system to solve:

20^2=h^2+x^2

101^2=h^2+(99-x)^2

I will use elimination to first solve for x.

Subtract the equations:

20^2-101^2=x^2-(99-x)^2

Factor both sides using a^2-b^2=(a-b)(a+b):

(20-101)(20+101)=(x-(99-x))(x+(99-x))

Simplify inside the ( ).

(-81)(121)=(2x-99)(99)

Divide both sides by 9:

(-9)(121)=(2x-99)(11)

Divide both sides by 11:

(-9)(11)=(2x-99)(1)

Simplify both sides:

-99=2x-99

Add 99 on both sides:

0=2x

Divide both sides by 2:

x=0

Now go to either equation we had in the beginning to find h.

20^2=h^2+x^2 with x=0

20^2=h^2

20=h

4 0
3 years ago
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12×4 =58
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