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erastova [34]
4 years ago
15

If the dimensions of a solid proportionally increase by a scale factor of 5/2, by what factor does the surface area increase?

Mathematics
1 answer:
shusha [124]4 years ago
5 0

Answer:

D

Step-by-step explanation:

Given that the dimensions of  a solid are in proportion a : b, then

then the ratio of the area is a² : b²

Thus

scale factor = \frac{5}{2} , then

area factor = \frac{5^2}{2^2} = \frac{25}{4} → D

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There are 4 blueberry, 6 raisins, and 2 plain bagels in a bag. Mike randomly selects two bagels without replacing the first bage
rodikova [14]

Answer:

The probability that he selects a raisin bagel and then a plain bagel is \frac1{11}.

Step-by-step explanation:

Probability:

The ratio of the number of outcomes of favorable event to total number of all possible outcomes is called probability of the favorable event.

Probability=\frac{\textrm{The number of favorable outcomes}}{\textrm{Total number of all possible}}

Given that, there are 4 blueberry, 6 raisins and 2 plain bangles in a bag.

Total number of bangles= (4+6+2)

                                        = 12

The probability that he selects a raisin

=\frac{\textrm{Number of raisin bangles}}{\textrm{Total number of bangles}}

=\frac{6}{12}

=\frac12

Total number of remaining bagels is =(12-1)=11

After selecting a raisin  bagel,the probability that he selects a plain bangle is

=\frac{\textrm{Number of plain bangles}}{\textrm{Total number of bangles}}

=\frac{2}{11}

Selecting of a raisin bangle and a plain bangle are both independent event.

The probability that he selects a raisin bagel and then a plain bagel is

=\frac{1}2\times\frac{2}{11}

=\frac1{11}

3 0
3 years ago
naughty spent $28 on 2 DVDs at this rate how much would five DVDs cost and what rate did she spend her money
ioda
If you divided 28 by 2 you will get 14 then times that by 5 and you will get 70 that is how much 5 will be
5 0
4 years ago
Combine like terms: <br> 9 + 17e-5e + 1
Mariana [72]

Answer:

Step-by-step explanation:

the like terms are 9, 1 and 17e,-5e

9+1+17e-5e=10+12e

4 0
3 years ago
Please help me with vivid explanation​
Ivanshal [37]

Answer:

864 m²

Step-by-step explanation:

  • First calculate the total area of the rectangular field

The area of a rectangle is given by the product of the length and the width

let A be the total area

A = 100*120

A = 12000 m²

Calculate the area of the small rectangles

  • Let A' be the total area of the four small rectangles and A" the area of one small rectangle
  • A' = 4 A"
  • A' = 4 [(\frac{120-4}{2})*(\frac{100-4}{2})]
  • A' = 4*58*48
  • A' = 11136 m²

  • Substract the A' from A to get the area of the road

Let A"' be the area of the road

A"' =A-A'

A"' = 12000-11136

A"' = 864 m²

3 0
3 years ago
Hello I need help please
Anastaziya [24]

Answer:24

Step-by-step explanation:I did tha a fee weeks ago.

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