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sineoko [7]
3 years ago
8

30 Points!!Need Help Please!!! Will give Brainliest!!!

Mathematics
1 answer:
mixer [17]3 years ago
3 0

Since DC = 12, then EF also = 12.

Both AD and BC are indicated to be the same .

So AE = (24 - 12) / 2 = 12/2 = 6


Now you have a right triangle with height DE = 8 and base AE = 6


Using the Pythagorean Theorem we can now find AD:


AD = √(8^2 + 6^2)

AD = √(64 + 36)

AD =√100

AD = 10

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aleksandr82 [10.1K]
It took 22 $20 bills . $86 x5= $430
Then $430 divide by 20 = 21.5
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What's the answer??
baherus [9]
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Convert 32 kilometers per hour to miles per day. (3.28 feet 1 meter)
bonufazy [111]

Answer:

477.09 mi/da

Step-by-step explanation:

If student must use conversion given, 3.28ft = 1m, then the following works:

32km/hr = ______mi/da       1 day = 24 hrs, 1m=3.28ft, 1km=1000m,1mi=5280ft

32km/hr  x  24hr/day  x  1000m/1km  x  3.28ft/1m  x  1mi/5280ft  = 477.09mi/da

If student can use 1km = 0.62mi, some steps can be skipped.

3 0
3 years ago
Use completing the square to determine which of the following gives the solutions to 3x2 - 24x + 40 = 28.
jeka94

Answer:

x=4+2\sqrt{3}

x=4-2\sqrt{3}

Step-by-step explanation:

<u>Completing the square</u>

when  ax^2+bx+c=0

Given equation:

3x^2-24x+40=28

Subtract 40 from both sides:

\implies 3x^2-24x=-12

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\implies x^2-8x=-4

Add the square of half the coefficient of x to both sides:

(\frac{b}{2})^2=(\frac{-8}{2})^2=16

\implies x^2-8x+16=-4+16

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Square root both sides:

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\implies x=4\pm\sqrt{4 \cdot 3}

\implies x=4\pm\sqrt{4}\sqrt{3}

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Evaluate the radical. 125−−−√3 Enter your answer in the box.
Ray Of Light [21]
The answer should be 5.
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3 years ago
Read 2 more answers
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