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Phantasy [73]
3 years ago
9

The tip of an 11-inch wiper blade wipes a path that is 31 inches long. What is the angle of rotation of the blade in radians to

the nearest tenth?
Mathematics
2 answers:
disa [49]3 years ago
7 0
Length of arc = Cr    where C = angle of rotation and r = radius

31 = C*11

C =  31/11 =  2.8 radians to nearest tenth
ale4655 [162]3 years ago
5 0

2.8 radians is the answer.

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In Lin's drawing, the scale is 5 inches = 8 feet, and the back wall of the lab measures
Leto [7]

Answer:

1 ft

Step-by-step explanation:

scale: 5 in. = 8 ft

Back wall scale measurement: 15 in.

Back wall real measurement: 15 in. × 8 ft / 5 in. = 24 ft

Each workstation measures 4 ft.

5 workstations measure 5 × 4 ft = 20 ft

24 ft - 20 ft = 4 ft

When you place 5 workstations, the outer two will be at the ends of the 24-ft wall. There will be 4 spaces between the workstations.

4 ft / 4 = 1 ft

Answer: 1 ft

7 0
2 years ago
Can someone help me with part b?
Tema [17]

Step-by-step explanation:

the average rate of change of a function f in an interval [x-low, x-high] is

(f(x-high) - f(x-low)) / (x-high - x-low)

the year 2000 means t = 2000-1980 = 20

the year 2015 means t = 2015-1980 = 35

so, we have

(A(35) - A(20)) / (35 - 20)

((-0.6(35)² + 37.2×35 + 243) - (-0.6(20)² + 37.2×20 + 243)) / 15

((-735 + 1302 + 243) - (-240 + 744 + 243)) / 15

(810 - 747) / 15 = 63/15 = 4.2

the average change rate between 2000 and 2015 is 4.2.

that means that the use of nuclear energy in the USA increased by 4.2 billions of kilowatt hours per year during that period.

3 0
3 years ago
What is the value of y in y-5=3-9(y+2)
Irina18 [472]
Y-5=3-9(y+2). so so u are going to distribute-9 to y and 2 which is -9y-18

so u are going to add like terms 3 and -18 which is -15. so the next step is going to be y-5=-9y-15 so u are going to add 5 to -5 and -15 to balance the equation and u will get -10 .  y=-9y -10. since u are multiplying -9 by y so have to expand it y= -9 * y -10. so u have to divide y by y to get y . -9-10= -19 soo y =-19


3 0
3 years ago
Decide whether the equation is a function, not a function, linear but not a function, or a linear function. Choose the best opti
Lostsunrise [7]
The answer is function
5 0
3 years ago
Read 2 more answers
Workout the median of 83,73,76,72,75,86,79,76
Leto [7]
The median is 76

explanation:
The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number. This is the median. If there are 2 numbers in the middle, the median is the average of those 2 numbers.
3 0
3 years ago
Read 2 more answers
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