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3 years ago

MathsWatch question:

Mathematics

1 answer:

Citrus2011 [14]3 years ago

7 0

Answer:

proving question

Step-by-step explanation:

The triangles have been drawn along with the circle and the figure is attached.

In ΔABD and ΔDCA

i) ∠ BAD = ∠ ADC = 90° [ Angle in a semicircle is always 90°]

ii) BD = AC [ both are diameters]

iii) AD = AD [ AD is a common side in both triangle]

Therefore, Δ ABD and ΔDCA are congruent to each other by RHS rule.

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What is the product of 60?

Rzqust [24]

We divide 60 by 2 as many times as possible to get 60 = 15 x 2 x 2. 2 is a prime number so we don't need to break the 2's down any more. Instead we break 15 down. 15 doesn't divide by 2 so we try the next prime number: 3 Divide 15 by 3 to get 15 = 5 x 3, and so 60 = 5 x 3 x 2 x 2.

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3 years ago

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If 45% of a number, n, is 225, what is 74% of n?

Reika [66]

Answer: 375

hope this helps :D

Step-by-step explanation:

225/45=5

5=1%

5 times 74 equals 375

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3 years ago

Can someone explain quadratics

IRINA_888 [86]

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3 years ago

What is the area, in square units, of the polygon shown here?

WITCHER [35]

You just need to break it into parts. The first rectangle is the tall one. To find the area of this one, just multiply the tall side by the short side on top.

8 x 2 = 16

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3 years ago

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Please help on these questions

Arada [10]

Answer:

6) 9216π

8) 24

Step-by-step explanation:

V= 2/3πr³

r = 48/2 = 24

V = 2/3π24³

V = 9216π

V = 4/3πr³

2304π = 4/3πr³

r³= (2304π)/4/3π

r³= 1728

$\sqrt[3]{r^3} =\sqrt[3]{1728}$

r = 12

D = 2r

D = 2 x 12 = 24

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3 years ago