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3 years ago

Can someone solve these for me

Mathematics

1 answer:

tatuchka [14]3 years ago

8 0

Answer:

0.66 and 33/50

62.5% and 5/8

0.75 and 3/4

120% and 1 1/5

0.005 and 1/200

3.75 and 375%

I hope that is correct and helps you! :)

Step-by-step explanation:

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A cupcake stand has 40 chocolate, 30 coconut and 20 banana cupcakes. Alice chooses 20 cupcakes at random to create a box as a pr

Paladinen [302]

Answer:

a) 0.00563

b) 1

c) 0

Step-by-step explanation:

Total = 40+30+20 =90

a) (20C8×30C6×40C6)/90C20

= 0.00563

b) 1 - (no chocolate + 1 chocolate)

1 - [(50C20) + (40C1×50C19)]/90C20

1 - 0.00002478

= 0.9999752187

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6 0

3 years ago

The perimeter of Δ ABC is 450 ft. If AB= 9x, BC=41x and CA=40x, what is the area of the triangle?

Nikolay [14]

Answer:

$A = 4500 ft^2$

Step-by-step explanation:

By definition:

The pre-meter P of a triangle ABC is equal to the sum of the length of its sides.

We know that:

$P = 450\ ft\\AB = 9x\\BC = 41x\\CA = 40x$

The perimeter is:

$P = AB + BC + CA\\P = 450 = 9x + 41x + 40x\\90x = 450\\x = 5$

Now we find the length of the sides:

$AB = 45\\BC = 205\\CA = 200$

Once the length of the sides is known, we use Heron's formula to calculate the area.

First I find the semiperimeter S.

$S = 0.5(45 + 205 +200)\\S = 225$

Then the Area is:

$A = \sqrt{s(s-AB)(s-BC)(s-CA)}\\\\A = \sqrt{225(225-45)(225-205)(225-200)}\\\\A = 4500\ ft^2$

5 0

4 years ago