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klio [65]
3 years ago
6

..........................

Mathematics
1 answer:
Rainbow [258]3 years ago
7 0
Option A

x+8=-3
x+8-8=-3-8
x=-11


Hope I didn't mess up for your sake!
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Find the area of triangle DEF with vertices D(-1,2), E(3,-2) and F(-2,-2).*
Veronika [31]

Answer:

<em>The area of the triangle DEF is 10.</em>

Step-by-step explanation:

<u>Area of a Triangle:</u>

A triangle of base B and height H (both must be perpendicular) has an area of:

\displaystyle A=\frac{BH}{2}

The image below shows the triangle formed by the points DEF. It's important to notice the points E and F lie on the same horizontal line because they both have the same y-coordinate.

This fact simplifies the calculations since we can easily compute the length the of base as the difference of their x-coordinates:

B=3-(-2)=3+2=5

Being the base of a horizontal line, the height of the triangle can be calculated as the difference of y-coordinates of D and the height of that line.

H=2-(-2)=4

With these two values, we calculate the area:

\displaystyle A=\frac{5*4}{2}=10

The area of the triangle DEF is 10.

4 0
3 years ago
During a football game, a team lost 12 yards on the first play and then gained 5 yards on each of the next 3 plays. Which method
agasfer [191]
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you have to combine what is common

plz give brainliest

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3 years ago
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