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In-s [12.5K]
3 years ago
5

Find the ratio of the surface areas of these two spheres

Mathematics
2 answers:
alexgriva [62]3 years ago
6 0

Answer:

4:1

Step-by-step explanation:

melamori03 [73]3 years ago
6 0

Answer:

nd the formula for the surface area of a sphere of radius R is 4*Pi*R2. And, you can check that the latter is the derivative of the former with respect to R.

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Sarah bought 18 boxes of 65 pens at $12 a box. She sold 378 of them at 3 for $1.00 and the rest at 4 for $1.00. Find her total p
KonstantinChe [14]

Answer:

$108

Step-by-step explanation:

1 box = $12

18 boxes = 12×18 = $216

Total = 18×65 = 1170 pens

Cost price, Cp = $216

3 = $1

378 = 378/3 = $126

1170-378= 792 pens remaining

4 = $1

792 = 792/4 = $198

Total selling price, sp = 126+198 = $324

Profit = Sp - Cp = 324 - 216 = $108

8 0
3 years ago
Factor completely 20x^3y + 30x^2y^2.
weqwewe [10]

Answer:

10x^2 y(2x + 3y)

Step-by-step explanation:

20x^3 y + 30x^2 y^2.

Factor 10x^2y out of 20x^3y.

10x^2 y (2x) + 30x^2 y^2  

Factor 10x^2y out of 30x^2y^2.

10x^2 y (2x) + 10x^2 y (3y)  

Factor 10x^2y out of 10x^2 y (2x) + 10x^2 y (3y).

10x^2 y(2x + 3y)

you factor out 10x^2y from both side which you will then get 10x^2 y (2x) + 10x^2 y (3y)  than you factor out 10x^2y again and get 10x^2 y(2x + 3y)  your third option

6 0
3 years ago
The volume of a rectangular box is found by multiplying its length, width, and height: V = lwh. A certain box has a volume of b
vlada-n [284]
I think its (b+3) (b+2) (b-2) maybe wrong not sure
5 0
3 years ago
Read 2 more answers
An astronaut who weighs 174 lb on Earth weighs 29 lb on the moon. Which of the following are correct amounts for weight on Earth
Korolek [52]

174/29 = 6 times the difference

17*6 = 102


12*6= 72

34*6 =204

15*6 = 90


so the answer is A

5 0
4 years ago
Read 2 more answers
How do you do this and what would the answer be.
Natali [406]
If you add the same number together it is impossible for it to be a negative number
3 0
3 years ago
Read 2 more answers
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