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Georgia [21]
3 years ago
12

If B is the midpoint of line AC, AC=CD, AB=3x+4, AC=11x-17, and CE=49, find DE

Mathematics
1 answer:
vekshin13 years ago
5 0

Answer:

DE=11 UNITS

Step-by-step explanation:

Given AC=CD

And AC=2AB as B is the mid point of AC

Hence 2(3x+4)=11x-17

6x+8=11x-17

11x-6x=17+8

5x=25

x=5

Hence AC=11(5)-17= 55-17=38

AC =CD = 38

CE = 49

Hence DE = CE-CD= 49-38 = 11

units

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Answer:

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2 years ago
a student played a computer game 500 times and won 370 of these game. he then won the next "x" games and lost none. he has now w
a_sh-v [17]

So, this is a proportion problem. If we express 75% as a fraction (3/4ths), we have:

\frac{370+x}{500+x}=\frac{3}{4}

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3 0
3 years ago
The picture shows a circular clock face.
marysya [2.9K]

Answer:

[C] 25π square inches

Step-by-step explanation:

<u><em>Given that:</em></u>

<em>the long hand of the clock is about 5 inches long.</em>

<u><em>To Find:</em></u>

<em>What is the approximate area of the clock face?</em>

<u><em>Solve:</em></u>

<em>Formula - </em><em>A =πr²</em>

<em>Note that;</em>

<em>π = 3.14 (about)</em>

<em>Radius - 5 inches</em>

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<em>A = 3.14(5)²</em>

<em>A = 3.14(25)</em>

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<em>Now let see the answer choices:</em>

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<em>B. 10 π square inches                    ≈  10(3.14) = 31.4</em>

<em>C. 25 π square inches                    ≈  25(3.14) = 78.5</em>

<em>D. 100 π square inches                    ≈ 100(3.14) = 314</em>

<em />

<em>Hence, the answer is [C] 25 π square inches </em>

<em />

<u><em>Kavinsky~</em></u>

6 0
2 years ago
Read 2 more answers
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uysha [10]

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

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7 0
3 years ago
Original: $75 new: $60
nadezda [96]

What's the question?

If it's "What's the difference?" or something like that, then the answer is 15. :)

4 0
3 years ago
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