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soldier1979 [14.2K]
3 years ago
12

What is the area of a triangle whose vertices are D(3, 3) , E(3, −1) , and F(−2, −5) ? Enter your answer in the box.

Mathematics
1 answer:
Murljashka [212]3 years ago
3 0

the answer is 5. hope this helps

Pls mark as brainliest


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Please help with math
Andru [333]

Answer:

Scale factor  = 3

Step-by-step explanation:

Using similar triangles

AT/AG = AB/AC

9/3 = x+10/3x-10

Cross multiply

3(x+10) = 9(3x-10)

Expand

3x+30 = 27x-90

3x-27x = -90 - 30

-24x = -120

x = 120/24

x = 5

For the larger triangle;

AC = 3x-10

AC = 3(5)-10

AC =15-10

AC = 5

AB = x+10

AB = 5+10

AB = 15

For the scale factor;

Since AT/AG = AB/AC

9/15 = 3/5

3*3/5*3 =3/5

Since the numerator and denominator of the larger triangle is multiplies by the same factor i.3 3. Hence the scale factor is 3

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2 years ago
Evaluate the expression shown below and write your answer as a mixed number in simplest form.
Dahasolnce [82]

The answer would be -8 1/6.

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2 years ago
Help please! Will give brainliest to best CORRECT answer! You need a ladder that will reach up a 25 foot tall house when placed
timurjin [86]

Answer:b 27 feet

Step-by-step explanation:You need a ladder that will reach up a 25 foot tall house when placed 10 feet away from the house.

6 0
2 years ago
Read 2 more answers
A railroad track rises 30 feet for every 400 feet of track. What is the measure of the angle of elevation of the track?
gtnhenbr [62]

Answer:

Step-by-step explanation:

Rising 30 feet for every 400 feet of track is not a very large angle of elevation.  We set this up as a right triangle to use right triangle trig to solve for the missing angle.  The height is 30 and the hypotenuse is 400.  The height is the side opposite the angle in question, and the hypotenuse is the hypotenuse! This is the sin ratio.  Setting up the ratio using our info:

sin\theta=\frac{30}{400}

When you are looking for a missing angle measure, as we are here, use the 2nd-->sin buttons to find the inverse of sin, which looks like this:

sin^{-1}(

Enter in the fraction 30/400 after the parenthesis and then hit enter to get the angle measure of 4.3 degrees.

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3 years ago
5x+4y= 10<br> –5x+y = 15
Ivahew [28]

Answer:

what exactly are we trying to solve for

6 0
3 years ago
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