156k views
11 votes
Pls someone help me or i’ll faint

Pls someone help me or i’ll faint-example-1
User Karmastan
by
8.0k points

2 Answers

9 votes

Answer:

see explanation

Explanation:

Using Pythagoras' identity in the right triangles.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

DF² = DE² + EF² , then

(a)

DF² = 16² + 12² = 256 + 144 = 400 ( take square root of both sides )

DF =
√(400) = 20

(b)

DF² = 7² + 2² = 49 + 4 = 53 ( take square root of both sides )

DF =
√(53) ≈ 7.28 ( to 2 dec. places )

User Sacabuche
by
8.4k points
5 votes
Answer:
a) DF = 20

b) DF =
Radical Form = sqrt(53)
Decimal Form = 7.28
User Dylnmc
by
7.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories