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ivanzaharov [21]
3 years ago
9

The ratio between the radii of two spheres is 9:2 What is the ratio of their volumes?

Mathematics
1 answer:
Mariana [72]3 years ago
4 0
There are several important information's already given in the question. Based on those given information's the answer can be easily deduced. 

Ratio of the radii of two spheres = 9 : 2
then
Ratio of the volume of the two spheres = 9^3 : 2^3
                                                               = 729 : 8
I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
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Mr. Smith is unhappy with the 2 foot concrete walkway around the edge of the pool. He decides to
nirvana33 [79]
Given that the total area of the walkway and the pool is w²+17w+66, and the width w, will be found as follows:
A=length×width
A=w²+17w+66
to get the new width we need to factorize the above quadratic form
A=w²+17w+66
=w²+11w+6w+66
=w(w+11)+6(w+11)
=(w+11)(w+6)
From the answer, the width=6 units, length=11 units
5 0
3 years ago
A family has 2 cars. the first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of 2
lora16 [44]

Car 1: 15x

Car 2: 20y

15x+20y=1300

x+y=75

So y=75-x

15x+20(75-x)=1300

-5x+1500=1300

-5x=-200

x=40.

y=75-40

y=35

Car 1: 40 gallons

Car 2: 35 gallons


8 0
3 years ago
What is the answer for number 7?
aivan3 [116]

Answer:

Step-by-step explanation:

x=30

m=abe=180

8 0
3 years ago
Find the values of x and y
Anastasy [175]

Answer:

X=20

Y=70

Step-by-step explanation:

All angles within a triangle add up to 180

180 - 40 = 140

140 is the top angle of the big triangle

140 + x + x = 180

x = 20

Now use x to find y by subtracting from the right angle (90 degrees)

90 - 20 = 70

70 + 40 + y = 180

Y = 70

8 0
3 years ago
HELP PLEASE (will give brainliest and thanks)
denpristay [2]
Pythagorean Theorem is a^2 + b^2 = c^2
Use it to find the hypotenuse of a right triangle
Formula for:
Volume of cones- 1/3 * 3.14 * r^2 * h
Volume of cylinders- 3.14 * r^2 * h
Volume of Spheres - 4/3 * 3.14 * r^3 
5 0
3 years ago
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