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gayaneshka [121]
3 years ago
12

Which of the following could represent the scale factor of the smaller figure to the larger figure?

Mathematics
1 answer:
Reptile [31]3 years ago
8 0

Answer:

It could be 2:5 or 6pi:15pi

Step-by-step explanation:

If you write the ratio of the surface area as a fraction, you would get \frac{20\pi *yd^{2} }{125\pi *yd^{2} }. Simplifying it would leave \frac{4}{25}. But this is NOT the answer because that is the ratio of the surface area. You have to square root it to find the scale factor. The square root is \frac{2}{5}. The answers would be 2:5 and 6pi:15pi.

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A first number plus a second number is 10. Twice the first number plus the second totals 26.
MakcuM [25]
1st number = x
2nd number = y

2x + y = 26
                    -
  x + y = 10

x = 16

26 - (2 x 16) = -6

10 - 16 = -6


Number 1 is 16
Number 2 is -6


3 0
3 years ago
1.2x-4y=28 solve for y
Gnesinka [82]
2x -4y= 28
⇒ -4y= 28 -2x
⇒ y= (28 -2x)/ (-4)
⇒ y= 28/(-4) -(2x)/ (-4)
⇒ y= -7 + 1/2x

The final answer is y= -7 + 1/2x~
4 0
2 years ago
Complete the table. Explain why the relationship is a proportional relationship. A cashier earns $8 per hour. Time (h) 2 4 Pay (
Alekssandra [29.7K]

Answer:

8  16  24  32  <u>40</u>  48  56  64  <u>72</u>

1   2     3    4    <u>5</u>    6    7     8    <u>9</u>

Step-by-step explanation:

The proportion is 8:1

When the dollar amounts increase by 8, the hour amounts increase by 1, and vice versa. That is why it is a proportion.

6 0
3 years ago
Ronny, Celina, Jack, and Michelle together placed a total of 20 brownies on a tray. Ronny placed 0.15 of the brownies, Celina pl
Marat540 [252]
To answer the question above, evaluate the number of cookies each of them placed on a tray. The calculations are shown below,
 
Ronny              C1 = 0.15 x 20 = 3
Celina              C2 = 3
Jack                 C3 = 0.30 x 20 = 6
Michelle           C4 = 20 - (3 + 3 + 6) = 8

From the calculation above, <em>Michelle</em> placed the most number of brownies on the tray. 

3 0
3 years ago
Read 2 more answers
Factor: 9t^2-16u^2 ?
liq [111]

Answer:

Step-by-step explanation:

9t²-16u² = 3²t²-4²u² = (3t)²-(4u)² = (3t+4u)(3t-4u)

8 0
3 years ago
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