3 years ago

Please help, urgent... Which transformation can not be used to prove that triangle ABC is congruent to triangle DEF?

Mathematics

1 answer:

AlladinOne [14]3 years ago

3 0

Answer:

Dilation

Step-by-step explanation:

Dilation can only be used to prove that certain figures are similar

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In the diagram below, GH is parallel to DE . If GH is 3 more than EH FH=10, and DE=12 find the length of EH. Figures are not nec

steposvetlana [31]

Answer: 5

Step-by-step explanation:

Since $\overline{GH} \parallel \overline{DE}$ , by the corresponding angles theorem, $\angle FGH \cong \angle FDE, \angle FHG \cong \angle FED$ . This means $\triangle FGH \sim \triangle FDE$ by AA.

As corresponding sides of similar triangles are proportional,

$\frac{10}{x+3}=\frac{10+x}{12}\\(10)(12)=(10+x)(x+3)\\120=x^{2}+13x+30\\x^{2}+13x-90=0\\(x+18)(x-5)=0\\x=-18, 5$
However, as distance must be positive, we consider the positive solution, x=5.

Therefore, the answer is 5

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2 years ago

20. SAILING On a sailing trip, each passenger needs a

inn [45]

Expression in simplest form represents the weigt

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3 years ago

Caleb took 9 photos at the zoo. One third of his photos are of giraffes. Enter the number of Caleb's photos that are of giraffes

Serhud [2]

Answer:

3 pictures are giraffes

Step-by-step explanation:

1/3 of 9 is 3. Caleb took 3 pictures of giraffes.

3,6,9...

1/3, 2/3, 3/3=1

Hope this helps!

8 0

3 years ago

Read 2 more answers

What is 12/24, 3/30, 10/8, 34/20, and 14/8 in lowest term and in percent form

kirza4 [7]

To find a fraction's lowest term, just simplify them and divide to find the decimal form.
12/24 = 1/2, 0.5
3/30 = 1/10, 0.1
10/8 = 5/4, 1.25
34/20 = 17/10, 1.7
14/8 = 7/4, 1.75

Finished!

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3 years ago

If x+3/3 = y+2/2, then x/3 = ? A. Y + 1 B. Y / 3 C. Y / 2 D. Y - 1

m_a_m_a [10]

Answer:

Step-by-step explanation:

(x+3)/3 =(y+2)/2

x/3 +3/3 = y/2 +2/2

x/3 +1 = y/2 +1

x/3 = y/2

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4 years ago