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3 years ago

How old was Lisa x years ago if she is now 13? Which expression represents this?

Mathematics

2 answers:

svlad2 [7]3 years ago

7 0

Answer:

a = 13 - x

Step-by-step explanation:

Age = a

(Any other letter of substitution for age would be fine)

For example if x was 5 :

a = 13 - 5

a = 8

For further study:

Research algebra on either website. (eg: Maths Is Fun, Khan Academy...)

gogolik [260]3 years ago

6 0

Answer:13-x= y

Step-by-step explanation:

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Find the equation of the line that goes through the point (0, 4) and is parallel to the line y=3x

den301095 [7]

$\huge\boxed{\sf{Hi\;there!}}$

Parallel lines have the same slope.

The given line has a slope of 3, therefore, the line parallel to the given line has a slope of 3.

Now, we have the slope of the line and a point that it passes through.

So, we can use the Point-Slope formula:

$\bigstar$ $\sf{y-y1=m(x-x1$

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2 years ago

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sergeinik [125]

Answer: $246.73

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P=200

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3 years ago

168% of what number is 714 and how do you get the answer??

DerKrebs [107]

Answer:

1199.52

Step-by-step explanation:

714/x=100/168

(714/x)*x=(100/168)*x - we multiply both sides of the equation by x

714=0.5952380952381*x - we divide both sides of the equation by (0.5952380952381) to get x

714/0.5952380952381=x

1199.52=x

x=1199.52

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2 years ago