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3 years ago

A ship sails 20 km west then 35 km south. Calculate how far it

Mathematics

2 answers:

amid [387]3 years ago

4 0

Answer:

40.3

Step-by-step explanation:

Use pythagoras theorem, a^2 + b^2 = c^2

400 + 1225 = 1625

sqrt of 1625 = approx 40.3

anzhelika [568]3 years ago

4 0

Answer:

40, 3 km

Step-by-step explanation:

Pitagora

AC = √(AB² + BC²)

AC = √(20² + 35²)

AC = √(400 + 1225)

AC = √1625

AC ≈ 40,3 km

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BRAINLIST ANSWER URGENT! What is wrong with the problem?

IRISSAK [1]

Answer:

The correct answer would be C they did not get common denominators

Step-by-step explanation:

You can only add fractions with common denominators for example you can not add 1/7 and 1/8 because the denominators are not equivalent.

I hope this helps you!!

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3 years ago

Anne has three more dollars than Freddy. Together they have $99. How many dollars does each have?

Tamiku [17]

Anne has 51. Freddy has 48.

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3 years ago

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One container is filled with mixture that is 25% acid. A second container is filled with a mixture that is 55% acid. The second

algol13

Answer:

Therefore the third container contains $\frac{735}{17}\%$ = 43.23 % acid.

Step-by-step explanation:

Given that, One container is filled with the mixture that 25% acid. 55% acid is contain by second container.

Let the volume of first container be x cubic unit.

Since the volume of second container is 55% larger than the first.

Then the volume of the second container is

$= (V\times \frac{100+55}{100})$ cubic unit.

$=\frac{155}{100}V$ cubic unit.

The amount of acid in first container is

$=V\times \frac{25}{100}$ cubic unit.

$=\frac{25}{100}V$ cubic unit.

The amount of acid in second container is

$=(\frac{155}{100}V \times \frac{55}{100})$ cubic unit.

$=\frac{8525}{10000}V$ cubic unit.

Total amount of acid $=(\frac{25}{100}V+\frac{8525}{10000}V)$ cubic unit.

$=(\frac{2500+8525}{10000}V)$ cubic unit.

$=(\frac{11025}{10000}V)$ cubic unit.

Total volume of mixture $=(V+\frac{155}{100}V)$ cubic unit.

$=\frac{100+155}{100}V$ cubic unit.

$=\frac{255}{100}V$ cubic unit.

The amount of acid in the mixture is

$=\frac{\textrm{The volume of acid}}{\textrm{The amount of mixture}}\times 100 \%$

$=\frac {\frac{11025}{10000}V}{\frac{255}{100}V}\times 100\%$

$=\frac{735}{17}\%$

Therefore the third container contains $\frac{735}{17}\%$ acid.

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3 years ago

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melamori03 [73]

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3 years ago

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artcher [175]

1 + (-5/8) = 3/8

Explanation: If the coffee wasn’t drank it would’ve been at fraction 1 (or 100%)

Since he drank 5/8 of it. The coffee left is now 1-(5/8)

But since the question has asked to give the equation in addition format. Put a plus sign in between the two.

Therefore,
1 + (-5/8)

Solve it,
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= (8-5)/8
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Hence the equation is:

1 + (-5/8) = 3/8.

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3 years ago

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