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Slav-nsk [51]
3 years ago
7

Without expanding show that. Help please!​

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
3 0
Answer:
I’m sorry but I can’t answer until you explain
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Classify the system correctly <br> Y = 5x +2<br> 10x - 2y = 12
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It's a simultaneous equation because it as two solution

Step-by-step explanation:

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Write the rule of this pattern 5,20,80,320
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Times 4 because, 5 times 4 is 20, 20 times 4 is 80 and so on.
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Leonardo da vinci took out A simple interest loan at 12.75% interest for 12 months. His previous balance is % 942.36. What is hi
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Answer:

A = 2,384.1708

Step-by-step explanation:

A = P(1  + rt)

P = 942.36

r = 12.75%

t = 12 months

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A = 942.36(2.53)

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6 0
3 years ago
Which ratio can be used to form a proportion with the given ratio? 3 to 4
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As soon as I see the word "Which ...", I know that there's a list of choices that
goes along with this question, but you decided not to share them.  So there's
no way for me to help you choose the correct one.

In order to form a proportion with 3/4, you need another fraction (or ratio) that's
equal to 3/4 .  Look for a fraction whose numerator is 3/4 of its denominator. 

Here are a few examples:

-- 6 / 8
-- 24 / 32
-- 300 / 400
-- 12 million / 16 million
-- 3x / 4x
-- 15abc / 20abc
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6 0
2 years ago
The Greek mathematician Eratosthenes (ca. 276-195 BC) measured the circumference of the earthfrom the following observations. He
denpristay [2]

Answer:

Radius of the Earth is 3978.8 Miles

Circumference of the Earth is 25000 Miles

Step-by-step explanation:

The angle of the sun shone at an angle of 7.2° to the zenith

This means that the angle of the sector of the circle is 7.2° (θ)

S = Length of the sector of the circle = 500 miles

r = radius of earth

Converting 7.2° to radians

\theta =7.2\frac{\pi}{180}

S=r\theta\\\Rightarrow r=\frac{S}{\theta}\\\Rightarrow r=\frac{500}{7.2\frac{\pi}{180}}\\\Rightarrow r=3978.8\ Miles

∴ Radius of the Earth is 3978.8 Miles

C=2\pi r\\\Rightarrow C=2\times \pi \frac{500}{7.2\frac{\pi}{180}}\\\Rightarrow C=25000\ Miles

∴ Circumference of the Earth is 25000 Miles

5 0
3 years ago
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