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agasfer [191]
2 years ago
5

How to simplify -7 + 3 - 20

Mathematics
2 answers:
PtichkaEL [24]2 years ago
5 0

Answer:

-24

Step-by-step explanation:

-7 +3 is -4

-4+-20 is -24

crimeas [40]2 years ago
5 0

-7 + 3 - 20

= -4 - 20

= -4 + -20

= -24

______

Hope it helps ⚜

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Find the equation of a line that passes through the points (6,7) and (8,3).
horsena [70]

Answer:

y=-2x+19

Step-by-step explanation:

For lines like these, the slope is always defined as "the change in y over the change in x" or, in equation form:  m= \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }.

Now we have,

m= 3-7/8-6

m=-2. Since m=-2, the equation is y=-2x+b.

To find b, think about what your (x,y) points mean:

(6,7). When x of the line is 6, y of the line must be 7.

(8,3). When x of the line is 8, y of the line must be 3.

Substitute them to the equation  y=-2x+b.

You can use either (x,y) point you want..the answer will be the same:

(6,7). y=mx+b or 7=-2 × 6+b, or solving for b: b=7-(-2)(6). b=19.

(8,3). y=mx+b or 3=-2 × 8+b, or solving for b: b=3-(-2)(8). b=19.

So, the equation of the line that passes through the points

(6,7) and (8,3)  is  y=-2x+19.

3 0
3 years ago
Erin is squaring numbers.
rewona [7]
<span>If you square a number that is less than 1.

For example, say your number was 1/2
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3 0
2 years ago
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What is the solution set of the quadratic inequality 4(x + 2)2 &lt;0?
Lesechka [4]

Step-by-step explanation:

<em><u>4</u></em><em><u>(</u></em><em><u>X+</u></em><em><u>2</u></em><em><u>)</u></em><em><u>2</u></em>

<em><u>taking </u></em><em><u>in </u></em><em><u>left </u></em><em><u>hand </u></em><em><u>side,</u></em>

<em><u>(</u></em><em><u>X+</u></em><em><u>2</u></em><em><u>)</u></em><em><u>=</u></em><em><u>4</u></em><em><u>-</u></em><em><u>2</u></em>

<em><u>(</u></em><em><u>X+</u></em><em><u>2</u></em><em><u>)</u></em><em><u>=</u></em><em><u>2</u></em>

<em><u>X=</u></em><em><u>2</u></em><em><u>-</u></em><em><u>2</u></em>

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3 0
2 years ago
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7nadin3 [17]
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This can be simplified into two answers, either y = -3 or y = 2
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jeyben [28]

Answer:

2.925 miles

Step-by-step explanation:

4.5\times 0.65=2.925 miles. Hope this helps!

3 0
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