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3 years ago

2abc-3ab A=2 b=-3 c=4

1 answer:

8 0

2(2)(-3)(4) - 3(2)(-3)

4(-3)(4) - 6(-3)

-12(4) - (-18)

-48 + 18

-30

Whenever there are two minus signs next to each other, your answer should become a positive. If there is one minus sign and one addition sign, it will stay a negative sign. If there are two addition signs, the addition sign will stay the same.
(-) (-) = +
(-) (+) = -
(+) (-) = -
(+) (+) = +

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Answer:

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Step-by-step explanation:

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3 years ago

F+ 20 = -1 Solve the equation and check your solution

Leona [35]

Answer:

f=-21

Step-by-step explanation:

-21+20=-1

f has to be a negative number as the answer is negative and -21 is the only plug in that would make sence as the answer is negative one.

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3 years ago

BChoose the equation that represents the graph.

VMariaS [17]

The graph illustrates a linear function, because the graph is a straight line

The equation of the graph is (d) y = x +3

The points on the line are:

$(x_1,y_1) = (-3,0)$

$(x_2,y_2) = (0,3)$

First, we calculate the slope (m)

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

Substitute values for x1, x2, y1 and y2

$m = \frac{3-0}{0--3}$

Simplify

$m = \frac{3}{3}$

Divide

$m = 1$

The equation of the line is then calculated using the following formula:

$y = m(x - x_1) + y_1$

Substitute values for m, x1 and y1

$y = 1(x - -3) + 0$

Simplify

$y = 1(x +3)$

Open bracket

$y = x +3$

Hence, the equation of the graph is (d) y = x +3

Read more about linear graphs at:

brainly.com/question/20853486

4 0

2 years ago

On Saturday, Craig rode his bike 5/8 of a mile. On Sunday, he rode his bike 1/2 of a mile. Craig added 5/8 + 1/2 to find the tot

saul85 [17]

Hi there!

Craig's reason is not reasonable because when you add fractions you have to find equivalent fractions.

The total distance in miles would be 1 1/8 miles.

By using a number line, line up the fractions, so then you could add them both.

Hope this helps :)

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3 years ago

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