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emmasim [6.3K]
3 years ago
10

triangle ABC above is isosceles with AB=AC and BC =48. the ratio of DE is 5:7. what is the length of DC

Mathematics
2 answers:
marshall27 [118]3 years ago
6 0

Answer:

28

Step-by-step explanation:

Question Image is attached.

Triangle BED and Triangle CFD are similar.

We can let the length of BD be 5x and DC 7x

We also know BC = 48, thus we can write:

5x + 7x = 48

12x = 48

x = 4

Now, Since DC = 7x, we plug in x = 4 into it.

DC = 7x

DC = 7(4)

DC = 28

Length of DC is 28

natima [27]3 years ago
5 0

Answer:

28

Step-by-step explanation:

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PLEASE HELP! I need answers ASAP!
Dafna11 [192]

Answer:

6.32

Step-by-step explanation:

Also known as 2√10

After we solve that we get 6.32455532

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8 0
3 years ago
the length of a rectangle is 61/2 inches and the width is 33/4,. what is the ratio, using whole numbers of the length to the wid
xxTIMURxx [149]
61/2 inches = 30.5 inches

33/4 inches = 8.25 inches

----------------

8.25\times n=30.5\\ \\ \therefore \quad n=\frac { 30.5 }{ 8.25 } =\frac { 122 }{ 33 }

----------------

Ratio:

122/33 : 1

= 122/33 x 33 : 1 x 33

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5 0
4 years ago
Evaluate the expression for x = 1. 7. Enter your answer in the box. X2 3x.
earnstyle [38]

The expression is x^2 + 3x. The value of the given expression for x= 1.7 is 7.99.

<h3>What is the expression?</h3>

The expression is defined as a set of terms combined using the operations addition, subtraction, multiplication, or division.

The given expression is x^2 + 3x.

The value of expression for x = 1.7 is calculated as given below.

Put x = 1.7 in the expression,

(1.7)^2 + 3\times 1.7

2.89 + 5.1

7.99

The value of expression x^2 + 3x for x= 1.7 is 7.99.

To know more about the expressions, follow the link given below.

brainly.com/question/13947055.

7 0
2 years ago
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