Which system of equations is represented by this graph?

Mathematics

1 answer:

lutik1710 [3]2 years ago

6 0

Answer:

(D)

Step-by-step explanation:

i just looked at the slopes tbh but im pretty sure its right

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Nitella [24]

Answer:

Step-by-step explanation:

4 0

2 years ago

Troy signed up for a new cell phone plan which charges him a fee of $40 per month, plus $0.05 for each text message that he send

nataly862011 [7]

He can send 600 messages.
40+0.05x=70
-40+0.05x=70-40
0.05x=30
So divide 30 by 0.05
and you get 600.

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3 years ago

Why can you use cross products to solve the proportion StartFraction 18 over 5 EndFraction = StartFraction x over 100 EndFractio

gtnhenbr [62]

9514 1404 393

Answer:

it is application of the multiplication property of equality

Step-by-step explanation:

You can use "cross products" to solve any proportion. What looks like a "cross product" is just application of the multiplication property of equality. That property says the variable value is unchanged if both sides of the equation are multiplied by the same value.

For your fraction, the "cross product" is what you get when you multiply both sides of the equation by 500.

$\dfrac{18}{5}=\dfrac{x}{100}\qquad\text{given}\\\\\dfrac{18\cdot5\cdot100}{5}=\dfrac{x\cdot5\cdot100}{100}\qquad\text{multiply by $5\cdot100$}\\\\18\cdot100=5\cdot x\qquad\text{cancel common factors; looks like cross product}$