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3 years ago

A line includes the points (4, -9) and (2, -1). What is its equation in slope-intercept form?

Mathematics

1 answer:

Serjik [45]3 years ago

4 0

-1 minus -9 / 2 minus 4 -1--9/2-4

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$1000 -$25 = $975
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3 years ago

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By cuting it in time

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3 years ago

2 more than a number

goblinko [34]

Step-by-step explanation:

Let the number be x

2 more than a number = x + 2

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3 years ago

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Solve x^2=12x-15 by completing the square. which is the solution set of the equation?

svlad2 [7]

Use the formula (b/2)^2 in order to create a new term. Solve for x by using this term to complete the square.

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6 0

4 years ago

If a = 12 and 120% of a is equal to 80\% of bthen what is a + b ?

Novosadov [1.4K]

Answer:

The answer is 30

Step-by-step explanation:

First you have to find 120% of a (12).

$\frac{12}{1} \times \frac{120}{100} = 14.4$

Therefore; 14.4 is 80% of b, and we are trying to find 100% of b

$14.4 = 80\% \\ x = 100\%$

we do not know what is 100% therefore we call it *x*. In order to find this unknown value *x* we cross multiply.

$14.4 \times 100\% = 80\% \times x$

This is the same as saying;

$14.4 \times 1 = x \times \frac{4}{5}$

100% percent would be 1 because it is the whole number we are trying to find. The 80% would be 4/5. To get 4/5 you can simply break down 80/100 ( this is 80% as a fraction).

so the new equation is: 14.4= 4/5x

We divide both sides by 4/5. Then we will get x tobe equal to 18. Therefore b is 18. We were asked to find (a + b) so. 18+12 = 30

4 0

2 years ago