2 years ago

2x+9y=27 x-3y=-24 substitute

Mathematics

1 answer:

noname [10]2 years ago

3 0

Answer:

x = 3(5)-24 = -9

{x,y} = {-9,5}

Step-by-step explanation:

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A scale on a map shows that 2 inches = 25 miles.

Simora [160]

A:
2 inches - 25 miles
x inches - 60 miles

Set up a proportion:
$\frac{2}{25} = \frac{x}{60} \\ \\
\frac{2}{25} \times 60=x \\ \\
\frac{120}{25}=x \\ \\
x=4.8$

4.8 inches on the map represent 60 miles.

B:
2 inches - 25 miles
1/4 inches - x miles

Set up a proportion:
$\frac{2}{25}=\frac{\frac{1}{4}}{x} \\ \\
\frac{2}{25}x=\frac{1}{4} \\ \\
x=\frac{1}{4} \times \frac{25}{2} \\ \\
x=\frac{25}{8} \\ \\
x=3.125$

3.125 miles are represented by 1/4 inches on the map.

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2 years ago

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Which number line below shows the values of x that are solutions for 3x-2<4?Show the work.

Whitepunk [10]

Work shown above! Answer would be A!