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Julli [10]
2 years ago
12

Matthew made a scale model of the solar system for a science project. He created the planet Mercury with a diameter of 6 inches.

According to the scale, what is the actual diameter of Mercury? *

Mathematics
1 answer:
Ronch [10]2 years ago
6 0

Answer:

3000

Step-by-step explanation:

I'm learning this right now too!

500×6in=3000

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Harriet bought 2kg of potatoes for $1.50 how much would it cost for 1 kg
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2 kg = 1.5 
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You build and sell toy cars for $36 each. So far, you have built 25 toy cars. How many more toy cars will you have to build and
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Multiple what you have already: 36x25 = 900
Subtract that from how much you need to earn:
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Which expression is equivalent to 6(4<br> + 9)?
agasfer [191]

Answer: 78

Step-by-step explanation:

6(4+9)

use foil to distribute the 6 to the 4 and 9

6×4 + 6×9

24 + 54

⇒ 78

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2 years ago
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Is this answer correct?
lakkis [162]

Answer:

yes

Step-by-step explanation:

5 0
3 years ago
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A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess
statuscvo [17]
Let's start by visualising this concept.

Number of grains on square:
1   2   4   8   16 ...

We can see that it starts to form a geometric sequence, with the common ratio being 2.

For the first question, we simply want the fifteenth term, so we just use the nth term geometric form:
T_n = ar^{n - 1}
T_{15} = 2^{14} = 16384

Thus, there are 16, 384 grains on the fifteenth square.

The second question begs the same process, only this time, it's a summation. Using our sum to n terms of geometric sequence, we get:
S_n = \frac{a(r^{n} - 1)}{r - 1}
S_{15} = \frac{2^{15} - 1}{2 - 1}
S_{15} = 2^{15} - 1 = 32767

Thus, there are 32, 767 total grains on the first 15 squares, and you should be able to work the rest from here.
6 0
3 years ago
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