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2 years ago

Find y when x equals 15 if y equals 6 when x equals 30

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

6 0

X=15 and Y=?

X=30 and Y=6

By rule of three

15x6/30 = 3

The answer is Y=3

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Please help ASAP !!!!!

Ket [755]

Answer:

I got you

Step-by-step explanation:

you just gotta get good kid :D

3 0

2 years ago

What is the surface area of a cylinder with base

Alisiya [41]

Answer:

138.23

Step-by-step explanation:

2πrh+2πr^2=2·π·2·9+2·π·2^2

3 0

2 years ago

What is the shaded portion of the circle

blagie [28]

Answer:

$(5\pi-11.6)\ ft^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the sector minus the area of the triangle

step 1

Find the area of the circle

the area of the circle is equal to

$A=\pi r^{2}$

we have

$r=5\ ft$

substitute

$A=\pi (5)^{2}$

$A=25\pi\ ft^{2}$

step 2

Find the area of the sector

we know that

The area of the circle subtends a central angle of 360 degrees

by proportion find out the area of a sector by a central angle of 72 degrees

$\frac{25\pi}{360}=\frac{x}{72}\\ \\x=72*25\pi /360\\ \\x=5\pi\ ft^{2}$

step 3

Find the area of triangle

The area of the triangle is equal to

$A=\frac{1}{2}(2.9+2.9)(4)= 11.6\ ft^{2}$

step 4

Find the area of the shaded region

Subtract the area of the triangle from the area of the sector

$(5\pi-11.6)\ ft^{2}$

8 0

2 years ago

Monster wants to change the shape of its can to the shape of a Red Bull can. If both cans can still hold 12 oz. And you want the

masha68 [24]

Hello,

Using V = (pi)(r)^2(h) :
V = 12
r = ?
h = 8
12 = (pi)(r)^2(8)
12/(8pi) = r^2
sqrt(12/8pi) = sqrt(r^2)
r = .69 in

Good luck to you!

3 0

2 years ago

What’s that precent 250 of 275

tester [92]

Answer:

Percent 250 of 275 is 90.9%

Step-by-step explanation:

We have to find 250 is what percent of 275.

Let X be the percentage, then

=> X = $\frac{250}{275} \times 100$

Now simplyfying the above relation we get

=> X = $0.909\times 100$

=> => X = 90.9 %

Hence 250 is 90.9% of 275

5 0

3 years ago