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Elena-2011 [213]
3 years ago
10

Look at the figure. How can you prove the triangles are congruent?

Mathematics
1 answer:
jek_recluse [69]3 years ago
5 0

Answer:

Δ ABD ≅ Δ CBD  SSS

Step-by-step explanation:

AB ≅ CB                  Given                                

AD ≅ DC                  Given                                

BD ≅ BD                  Reflexive property      

Δ ABD ≅ Δ CBD      SSS      

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How many matches are needed to form figure number 9 and 17? explain​
saveliy_v [14]

Answer:

Please find the complete question in the attached file.

Step-by-step explanation:

For point 1:

At this point we make up triangles for the first one makes up by 3 matches figure 2 make up by 5 matches figure 3 makes up by 7 matches.

For point 2:

 4 \ \ 5\ \   6\ \   7\ \   8  you can try to  

9 \ \  11\ \ 13 \ \ 15 \ \ 17 draw to find  values  

For point 3:

number of matches= 1+2 \times \ figure\  number\\\\

For point 4:

1+2 \times 9=19 \ \ (use \ law \ of\  (iii)) \\\\1+2 \times 17=35

3 0
3 years ago
You have a large container of petrol. You have used 320 quarts of petrol. Eighty percent of the petrol remains. How many quarts
Oduvanchick [21]

Answer:

256 quarts remain.

Step-by-step explanation:

.8x320=256

7 0
3 years ago
On a trip last summer, I used 20 gallons of gas to travel 600 miles. At this rate, how much gas
Reptile [31]

Answer:

45,000

Step-by-step explanation:

You should divide 20 by 600 to see how many miles he would run per mile

and you take 30 x 1,500 to get your answer

8 0
3 years ago
Help me PLease<br><br><br><br> also explain how to do it
Lady bird [3.3K]

❥\Large\pmb{ \underline {\tt Answer}}

So we can only find x if other two angles of triangle is given.

In angle B as u can see boxed shape angle is there then it probably means it's a 90° angle.

We know sum of angles of triangle = 180°

{Reson :-

There's a formula to fund sum of angles of figure

  • (n-2) × 180
  • (3 -2) × 180
  • 1 × 180
  • 180°

}

Now Let's proceed

\boxed{ \rm Side_1+Side_2+Side_3 = 180\degree}

Fill all the given values

\dashrightarrow \tt 90 \degree + 55 \degree + c = 180 \degree

\\  \\

\dashrightarrow \tt 145\degree + c = 180 \degree

\\  \\

\dashrightarrow \tt  c = 180  \degree - 145\degree

\\  \\

\dashrightarrow \tt  c = 35\degree

\\  \\

Value of x = 35°

~BrainlyVIP ⸙

8 0
3 years ago
Evaluate the expression when a=-2 and x=7.<br> -2a+x
ziro4ka [17]

Step-by-step explanation:

-2a + x

Putting values of a = - 2 and x = 7

-2(-2) + 7

4 + 7

= 11

8 0
2 years ago
Read 2 more answers
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