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juin [17]
3 years ago
15

a DVD storage tower has eight shelves. Each shelf can display 12 DVDs. How many storage towers does a worker need to display 144

0 DVDs?​
Mathematics
2 answers:
lapo4ka [179]3 years ago
8 0
We do 1440/12 to find out how many shelves we need which is 120 then we do 120/8 to see how many towers we need which is 15
Vikentia [17]3 years ago
7 0
120 i believe. 1440/12
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In the rectangular trapezoid ABCD AC is driven by a CD (see figure).
eimsori [14]

Answer:

solution given:

let's see only in a right-angled triangle Δ ACD.

AC=3 units

AD=5 units

since Δ ACD is a right-angled triangle. It satisfies Pythagoras law

AD^{2}=AC^{2}+CD^{2}

25=9+CD^2

CD^2=25-9=16

CD=\sqrt{16} =4 units

Now

Area of rectangle Δ ACD=\frac{1}{2} CD*AC=\frac{1}{2}*4*3=6\: square \:units

similarly,

\frac{1}{2} AD*CE=6\: square \:units\\ 5*CE=6*2\\CE=\frac{12}{5}=2.4 units

since AB=CE=2.4 units

Δ ACE is a right-angled triangle. It satisfies Pythagoras law.

AC^{2}=AE^{2}+CE^{2}\\3^2=AE^2+2.4^2\\9-5.76=AE^2\\AE and BC=\sqrt{1.24} =1.11 units

now

area of trapezoid=area ofΔACD+Area of ΔABC

=6+\frac{1}{2}AB*BC=6+\frac{1}{2}*2.4*1.11=6+1.33 =7.33\: square \:units

6 0
2 years ago
Quick anyone know the answer?
Crank
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3 years ago
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Answer:

The answer is B.

Step-by-step explanation:

Ratio of bananas to carrots:

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Step-by-step explanation:

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In any rhombus, the four sides are the same length.

Because of this, we know that

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Furthermore, AC = AC due to the reflective property

Those three facts then allow us to prove triangle ACD is congruent to triangle ACB through the SSS congruence property. Then from CPCTC, we then know that  angle DAC = angle BAC,  which is enough to show that AC bisects the angle shown. The term "bisect" means "cut in half".

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