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2 years ago

Need help hard question! Picture has it all.

Mathematics

1 answer:

iris [78.8K]2 years ago

3 0

Using the tagent rule:

Tangent(angle) = Opposite Leg / Adjacent leg

Tangent(51) = x / 10

x = 10 * Tangent (51)

x = 12.349

x = 12.3 ( Rounded to the nearest tenth)

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Alex17521 [72]

Answer:

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3 years ago

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2 years ago

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2 years ago

A coin collector has $45 in just dimes and quarters in a piggy bank he counted all the coins and there are 240 total how many ea

Whitepunk [10]

Answer:

The number of dimes are 100 and number of quarters are 140.

Step-by-step explanation:

Let the number of dimes be 'd' and quarters be 'q'.

Given:

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1 dime = $0.10

∴ 'd' dimes = $\$0.10d$

1 quarter = $0.25

∴ 'q' quarters = $\$0.25q$

Now, as per question:

$d+m=240-----1\\0.1d+0.25q=45---2$

Multiplying equation (1) by -0.1 and adding the result to equation (2), we get:

$-0.1d-0.1q=240\times -0.1\\-0.1d-0.1q=-24\\0.1d+0.25q=45\\-----------\\0.15q=21\\q=\frac{21}{0.15}=140\\\\d=240-q=240-140=100$

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