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3 years ago

Evaluate, 2 x (390 - [5 x (10 - 4 divided by 2)] + 15) x 2= ?

2 answers:

5 0

$2 * (390 - [5 * (10 - \frac{4}{2})] + 15) * 2= x \\ 2 * (390 - [5 * (10 - 2)] + 15] * 2 = x \\ 2 * (390 - [5 * 8] + 15) * 2 = x \\ 2 * (390 - 40 + 15) * 2 = 2 * (365) * 2 = x \\ 730 * 2 = x \\ 1460 = x$

sladkih [1.3K]3 years ago

4 0

The answer is 1460 because use math equations to break it down

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What is the area of this figure? Enter your answer in the box.

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Luckily for us, the diagram already divided this figure into separate polygons. What I will be explaining is basically the addition of the areas of all the separate polygons. The area of the uppermost triangle is:

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3 years ago

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3 years ago

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Ivanna is playing a game in which she spins a spinner with 6 equal-sized slices numbered 1 through 6. The spinner stops on a num

saul85 [17]

Answer:

The spinner has 6 equal-sized slices, so each slice has a 1/6 probability of showing up.

I guess that we want to find the expected value in one spin:

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where xₙ is the event and pₙ is the probability.

We know that the probability for all the events is 1/6, so we have:

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2 years ago

Triangle A B C is shown. Angle A C B is a right angle. The length of hypotenuse A B is 12 centimeters, the length of C B is 9.8

RSB [31]

Answer: We can find angle BAC by using (1) SinA = 9.8/12

(2) CosA = 6.9/12

(3) TanA = 9.8/6.9

Step-by-step explanation: The question indicates that we have a right angled triangle ABC with the right angle at point C (that is, angle ACB is the right angle). Also the three sides have been labeled as AB equals 12 cm, CB equals 9.8 cm and AC equals 6.9 cm. Line AB has been identified as the hypotenuse and angle A (that is, BAC) is the reference angle. If angle A is the reference angle, then line CB facing angle A shall be the opposite side, while line AC is the adjacent (which lies between the reference angle and the right angle). Please see the attached diagram for details.

Having these details available, we can actually find angle A by using any of the three trigonometric ratios, since all three sides are given. Hence,

SinA = opposite/hypotenuse

SinA = 9.8/12

SinA = 0.8167

Checking with your calculator or table of values, A = 54.76 (approximately 55)

Also CosA = adjacent/hypotenuse

CosA = 6.9/12

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Checking with your calculator or table of values A = 54.90 (approximately 55).

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TanA = 9.8/6.9

TanA = 1.4203

Checking with your calculator or table of values A = 54.83 (approximately 55).

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