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2 years ago

∠A = ___∘ Round your answer to the nearest hundredth.

Mathematics

2 answers:

larisa86 [58]2 years ago

6 0

Answer: 45.58 degrees

Step-by-step explanation:

$\sin A=5/7\\A=sin^{-1}(5/7) \approx 45.58^{\circ}$

Firlakuza [10]2 years ago

6 0

Use Inverse tan (tan-1)
Tan-1(5/7) = 35.54 degrees
Angle A = 35.54°

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Read 2 more answers

28 students in the class 75% pass how many students pass

SashulF [63]

Answer:

21 students pass

Step-by-step explanation:

Firstly, you can set up the problem into an equation where the variable X would equal the number of students passing. You put X over the total number of students in the class, turning it into a fraction, then set it equal to the fraction $\frac{75}{100}$ (which is 75% represented as a fraction).

$\frac{X}{28} = \frac{75}{100}$

The fraction $\frac{75}{100}$ can be simplified, because 75 and 100 are both multiples of 25, so after canceling out the 25s you would be left with $\frac{3}{4}$ .

$\frac{X}{28} = \frac{3}{4}$

Next, you use the process of cross multiplication which is essentially just multiplying the denominators of both fractions (which would be 28 and 4 in this case) to each side of the equation.

$\frac{X}{28} * 28 * 4 = \frac{3}{4} * 4 * 28$

The denominators cancel out leaving you with a simple equation to simplify.

$4* X = 3 * 28$

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Finally, divide both sides by four in order to isolate the variable.

$\frac{4X}{4} = \frac{84}{4}$

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