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3 years ago

30. (14 letters) The process of changing one unit of measure to another.

Mathematics

2 answers:

Georgia [21]3 years ago

7 0

Unit conversion
taxable income

Archy [21]3 years ago

4 0

Answer:

30) Unit conversion

25)

13) Idiom

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IRINA_888 [86]

A negative times a negative is a positive. I am not sure if that's the question, but hopefully that helps if it was.

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Use the discriminant to find the number and type of solution for x^2+6x=-9

likoan [24]

Answer:

D = 0; one real root

Step-by-step explanation:

Discriminant Formula:

$\displaystyle \large{D = {b}^{2} - 4ac}$

First, arrange the expression or equation in ax^2+bx+c = 0.

$\displaystyle \large{ {x}^{2} + 6x = - 9}$

Add both sides by 9.

$\displaystyle \large{ {x}^{2} + 6x + 9 = - 9 + 9} \\ \displaystyle \large{ {x}^{2} + 6x + 9 = 0}$

Compare the coefficients so we can substitute in the formula.

$\displaystyle \large{a {x}^{2} + bx + c = {x}^{2} + 6x + 9 }$

a = 1
b = 6
c = 9

Substitute a = 1, b = 6 and c = 9 in the formula.

$\displaystyle \large{D = {6}^{2} - 4(1)(9)} \\ \displaystyle \large{D = 36 - 36} \\ \displaystyle \large{D = 0}$

Since D = 0, the type of solution is one real root.

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3 years ago

Solve by graphing. <br>2x + 3y = 6 <br>2x - 2y = -4

Lana71 [14]

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Y Intercept 2

Slope1
Y Intercept 2

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3 years ago

What is 14.95 + 10% tip

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Find the slope of the lines joining each of the following pair of points.<br> (1,7) and (4,2)

Damm [24]

Answer:

-5/3

Step-by-step explanation:

We can find the slope using the slope formula

m = ( y2-y1)/(x2-x1)

= ( 2-7)/(4-1)

-5/3

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