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2 years ago

A) 4/15 + 2/5 its urgent pls

Mathematics

2 answers:

zhannawk [14.2K]2 years ago

6 0

Hey there!

4/15 + 2/5

≈ 4/15 + 6/15

≈ 4 + 6 / 15 - 0

≈ 10 / 15

≈ 10 ÷ 5 / 15 ÷ 5

≈ 2/3

Therefore, your answer is: 2/3

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

irina [24]2 years ago

4 0

Answer:

10/15, or 2/3

Step-by-step explanation:

To get common denominator multiply 2/5 by three: 6/15

4/15 + 6/15 = 10/15

divide by 5: 2/3

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3 years ago

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Answer:

Length of side $c$ :

$c = \rm AB \approx 115\; yds$ .

The distance across the canyon is approximately

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Step-by-step explanation:

$c$ is the length of the side opposite to the angle $\rm A\hat{C} B$ .
$a$ is the length of the side opposite to the angle $\rm B\hat{A}C$ .

Apply the law of sine:

$\displaystyle \frac{c}{\sin{\rm A\hat{C}B} = \frac{a}{\sin{\rm B\hat{A}C}}$ .

In other words,

$\displaystyle c = \sin{\rm B\hat{A}C} \cdot \frac{a}{\sin{\rm A\hat{C} B}}$ .

However, the value of the angle $\rm B\hat{A}C$ isn't given. Don't panic. The three interior angles of a triangle shall add up to 180°. Two of the three angles are given. The value of the third angle is implied.

$\rm B\hat{A}C = 180\textdegree{} - A\hat{C}B - A\hat{B}C = 30\textdegree{}$ .

Apply the law of sine to find $c$ :

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Answer:

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