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Ivan
2 years ago
8

What is the equation that represents the line that passes through the points (9, -2) and (12, -5)?

Mathematics
1 answer:
garik1379 [7]2 years ago
8 0

Hi there!

\large\boxed{y = -x + 7}

To begin, we must use the slope formula to calculate the slope of the line:

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

Plug in the coordinates:

m = \frac{-5-(-2)}{12-9}

Simplify:

m = \frac{-3}{3} =-1

Recall that the equation for a line in point-slope form is:

y - y1 = m(x - x1)

Plug in coordinates into the equation along with the slope:

y - (-2) = -1(x - 9)

Simplify:

y + 2 = -x + 9

y = -x + 7

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Hurry, geometry math 7th grade
Margarita [4]

You need to find the area of the hexagon, and the area of the triangle.

The formula for the area of a triangle is

a = \frac{bh}{2}

I hope this helps you a little.

5 0
2 years ago
Read 2 more answers
PLEASE HELP!!! PRE CAL!!!
kipiarov [429]
Please help my latest question

8 0
3 years ago
What is two thirds of eight
AlladinOne [14]
5 + 0.33333... 

<span>If you don't immediately recognize 0.33333.... as 1/3 (a very common fraction you should memorize), you can do the following. </span>

<span>x = 0.33333... </span>

<span>Multiply that by 10 to shift everything 1 place to the left: </span>
<span>10x = 3.33333... </span>

<span>Now subtract: </span>
<span>10x - x = 3.33333... - 0.33333... </span>
<span>9x = 3 </span>
<span>x = 3/9 </span>
<span>x = 1/3 </span>

<span>Answer: </span>
<span>5 1/3 </span>

<span>P.S. Here's a shortcut way to turn a repeating decimal into a fraction. </span>

<span>1) Take the repeated part and put it over an equivalent number of nines. </span>

<span>Example: </span>
<span>0.57575757... = 57/99 </span>

<span>At that point, see if you can reduce the fraction: </span>
<span>= 19/33 </span>

<span>Another example: </span>
<span>0.123123123... = 123/999 </span>
<span>= 41/333 </span>

<span>So in your example: </span>
<span>5.33333... = 5 + 0.33333... </span>
<span>= 5 + 3/9 </span>
<span>= 5 1/3</span>
8 0
3 years ago
A standard deck of playing cards has 52 cards: 13 spades, 13 clubs, 13 hearts, and 13 diamonds. What is the probability of drawi
Vaselesa [24]

13 spades, 52 cards total

probability of drawing a single spade = 13/52 = 1/4

If we replace that card, then the probability of drawing of drawing a spade is still 1/4 as nothing has changed

Overall, the probability of getting two spades in a row is (1/4)*(1/4) = 1/16

note: the two events are independent because of the replacement happening

---------

The answer as a fraction is 1/16

As a decimal, that would be 0.0625 which converts to 6.25%

5 0
3 years ago
A building in a downtown business area casts a shadow that measures 88 meters along the ground. The straight-line distance from
Pepsi [2]
A shadow measures 88 m: d = 88 m.
The angle : α = 32°
We will use trigonometry:
h / d = tan α
h / 88 m = tan 32°
h / 88 m = 0.62489
h = 88 m * 0.62489
h = 54.9885 m ≈ 55 m
Answer: The approximate height of a building is 55 meters.
8 0
3 years ago
Read 2 more answers
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