3 years ago

What are the two numbers that multiply to 9 and add to -6?

Mathematics

1 answer:

Alexxandr [17]3 years ago

8 0

Answer:

-3 and -3

Step-by-step explanation:

When multiplying two negatives you get a positive. When adding two negatives you get a negative. So:

$-3*-3=9\\-3+(-3)=-6$

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Name three common measurements that are expressed as a ratio of two units.

True [87]

Mpg is one...........

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3 years ago

Determine whether the three points are collinear.<br> (0, - 10). (-3,- 13), (2,-8)

LUCKY_DIMON [66]

Answer:

<h2>YES. These points are collinear.</h2>

Step-by-step explanation:

If three points are collinear, then the slopes are the same.

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

For (0, -10) and (-3, -13):

$m=\dfrac{-13-(-10)}{-3-0}=\dfrac{-13+10}{-3}=\dfrac{-3}{-3}=1$

For (-3, -13) and (2, -8):

$m=\dfrac{-8-(-13)}{2-(-3)}=\dfrac{-8+13}{2+3}=\dfrac{5}{5}=1$

We can check the last pair (0, -10) and (2, -8):

$m=\dfrac{-8-(-10)}{2-0}=\dfrac{-8+10}{2}=\dfrac{2}{2}=1$

5 0

3 years ago

Write x2 - 2x + 5 = 0 in vertex form. (Be sure to write your response in the form a(x-h)^2+k=0 with no spaces!)

Drupady [299]

To write the given quadratic equation to its vertex form, we first form a perfect square.

x² - 2x + 5 = 0
Transpose the constant to other side of the equation,
x² - 2x = -5
Complete the square in the left side of the equation,
x² - 2x + (-2/1(2))² = -5 + (-2/1(2))²
Performed the operation,
x² - 2x + 1 = -5 + 1
Factor the left side of the equation,
(x - 1)² = -4

Thus, the vertex form of the equation is,
<em> (x-1)² + 4 = 0</em>

4 0

3 years ago

What is the difference? 4/3 - 7/9 a. - 1/2 b. -1/3 c. 5/9 d 11/12

ANTONII [103]

4/3-7/9

= (36-21) /27

= 15/27

= 5/9 which is C

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3 years ago

Read 2 more answers

−6⋅20.1x=−100

alina1380 [7]

Answer:

The answer (D)

x=log2(50/3)

7 0

3 years ago