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krok68 [10]
3 years ago
14

Pls help i will give brainliest

Mathematics
1 answer:
zlopas [31]3 years ago
3 0
It is B because yiu solve
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Solve for x. Round your answer to the nearest tenth.
valkas [14]

Answer:

1. x = 11.5

2. x = 14.35

Step-by-step explanation:

1. \: sin(angleBAC) =  \frac{BC}{AB}

sin(35°) =  \frac{x}{20}

x = 11.472 ≈ 11.5

2. \: tan(angleBAC) =  \frac{BC}{AB}

tan(64°) =  \frac{x}{7}

x = 14.352 ≈ 14.35

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5 0
3 years ago
Determine how long it will take an object to rotate through 20.0 revolutions at an angular velocity of 2.8 radians per second. U
Andreyy89
The conversion factor between radians and revolution as measures of angle is 2π rad is equal to 1 revolution. Converting the given angular velocity to rev/s,
                (2.8 rad) x (1 rev / 6.28 rad) = 70/157 revolution per second
Dividing the given angle, 20 rev by the velocity,
                                 (20 rev) / (70/157 rev/s) = 44 6/7 s
Thus, the answer is approximately 44.9 seconds. 
5 0
4 years ago
A train travels 38 miles per hour. At this rate, how far will the train travel in 4 hours?
exis [7]

Answer: 152 miles.

Step-by-step explanation: For each hour a train travels 38 therefore if it drove 2 hours it would drive double the distance and so forth.

38 x 4 = 152 miles.

8 0
4 years ago
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Write the equation of the linear relationship in slope-intercept form, using decimals as needed.
masha68 [24]

Answer:

y=0.95x+2.5

Step-by-step explanation:

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

<em>Find the slope</em>

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

take the points

(0,2.5) and (100,97.5)

substitute in the formula

m=\frac{97.5-2.5}{100-0}

m=\frac{95}{100}

m=0.95

Find the y-intercept b

we have

m=0.95

point\ (0,2.5)

substitute i the linear equation  y=mx+b

2.5=0.95(0)+b

solve for b

b=2.5

Note It was not necessary to calculate the value of b because the value is given in the table

Remember that the y-intercept is the value of y when the value of x is equal to zero (the y-intercept is the point (0,2.5))

The linear equation is

y=0.95x+2.5

5 0
3 years ago
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