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3 years ago

6

Boating across a river, the current moves you downstream. Instead of going directly across the river, the boat moves at a 25 deg

ree angle. If the river is 375 feet across, how far downstream will you end up?

1 answer:

solong [7]3 years ago

7 0

If it's described as my drawing:

The distance of downstream will be 375 * tan25 = 174.87 feet

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If a pen and a pencil cost 1.10$ but the pen cost is 1$ more than pencil

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Answer:

The pencil cost $0.05 and the pen cost $1.05.

Step-by-step explanation:

Let, the price of the pencil is $ .

Given that the pen costs a dollar more than the pencil,

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

Given

Let:

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So, we have:

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Required

The price of each

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Make c the subject in: $c + 3d = 5.00$

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$2c + j + 2d = 7.50$

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Make j the subject

$j = 7.50 - 10.0 +6d - 2d$

$j = -2.50 +4d$

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$3[5.00 - 3d] + j + 4d = 11.50$

$15.00 - 9d + j + 4d = 11.50$

Make j the subject

$j = 11.50 - 15.00 + 9d -4d$

$j = -3.50 + 5d$

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$j = -3.50 + 5d$ and $j = -2.50 +4d$

Equate both values of j

$-3.50 + 5d = -2.50 + 4d$

Collect like terms

$5d - 4d = 3.50 -2.50$

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$j = -3.50 + 5.00$

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To solve for c, we substitute $d = 1.00$ in $c + 3d = 5.00$

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