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3 years ago

Eee help meee it’s due today

Mathematics

1 answer:

wolverine [178]3 years ago

5 0

2) 2/7 divided 1/3 = 6/7

3) 4/9 times 3/8 = 1/6

4) 5/8 times 2/15 = 1/12

5) 1 divided 3/4 = 1 1/3

6) 1/8 times 8 =1/64

7) 2 1/4 times 1/6 = 3/8

8) 5/8 times 2 2/3 = 1 2/3

9) 1 1/8 times 4 = 4 1/2

10) 2 1/5 divided 11 = 1/5

11) 4 1/2 times 1 1/3 =6

12) 2 1/7 divided 3 3/7

13) 2 2/9 times 7 = 16

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KATRIN_1 [288]

Answer:

Step-by-step explanation:

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In a right triangle ABC, CD is an altitude, such that AD=BC. Find AC, if AB=3 cm, and CD= root 2 cm.

Nata [24]

Given CD is an altitude such that AD=BC , AB=3 cm and CD= √2 cm.

Let AD=x, Since given AB=3

AD+DB=3

x+DB = 3

DB = 3-x

Since ΔBCD is rght angle triangle, let's apply Pythagoras theorem

$BC^{2} = DB^{2} +CD^{2}$

$BC^{2} = (3-x)^{2} +(\sqrt{2} )^{2}$

$BC^{2} =(3-x)^{2} +2$

Since given AD=BC,let us plugin BC=x in above step.

$x^{2} =(3-x)^{2} +2$

$x^{2} =9-6x+x^{2} +2$

6x=11

x= $\frac{11}{6}$

Now we know AD=x= $\frac{11}{6}$ and given CD=√2.

Let us apply Pythagoras theorem for ΔACD

$AC^{2} =AD^{2} +DC^{2}$

$AC^{2} = (\frac{11}{6} )^{2} +(\sqrt{2} )^{2}$

$AC^{2} =\frac{193}{36}$

$AC=\sqrt{\frac{193}{36} }$ = 2.315cm

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3 years ago

A cone has a radius of 4 units and a height of 6 units.

Usimov [2.4K]

We know, Volume of a Cylinder = πr² h/3
v = 3.14 * 4² * 6/3
v = 3.14 * 16 * 2
v = 100.48

In short, Your Answer would be Option B

Hope this helps!

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