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frez [133]
3 years ago
14

You and a friend missed the bus so you must walk home from school together. At the park, you part ways.

Mathematics
2 answers:
aniked [119]3 years ago
5 0

Answer:

10 kilometers

Step-by-step explanation:

4 kilometers north plus 6 kilometers east makes 10 kilometers. This is the right answer.

Cerrena [4.2K]3 years ago
5 0

Answer:

10

Step-by-step explanation:

because if you part ways after walking the same distance and he walks 4 kilometers and you walk 6 well 4+6=10.

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The tires on Eric's car have a diameter of 18 inches. Rounded to the nearest whole number, how many rotations per second does ea
Step2247 [10]

Answer:

Step-by-step explanation:

We need to figure out how far Eric's car takes him in 1 rotation based on the diameter of his tire in feet. If the diameter of the tire is 18", then it is 1.5'. The circumference will tell us the distance 1 rotation of his tires will take him:

C = 3.1415(1.5) so

C = 4.71225 feet is how far he goes in 1 rotation. If he travels 88 feet in 1 second, we can figure the number of rotations by dividing 88 by 4.71225 to give us the unit rate (or, rotations per second his car makes). This quotient is 18.67 feet per sec, which rounds to 19, choice B.

4 0
3 years ago
What is the probability of randomly guessing at least 8 out of 10 questions correct on a true-or-false quiz?
Kay [80]
P( at least 8 correct ) = 
<span>........P( 8 ) + P( 9 ) + P( 10 ) = </span>
<span>........(10 C 8).5^10 + (10 C 9).5^10 + (10 C 10).5^10 = ........56*.5^10 = 0.0546875 </span>

<span>Note: Let C denote correct and I denote incorrect. Suppose that guessing results in 8 correct and 2 incorrect answers. One possible outcome is CCCCCCCCII, for example. We can think of the number of ways of getting exactly 8 correct to be the same as the number of ways of selecting 8 spots for the correct answers times the number of ways of selecting two spots for the remaining two answers. There are (10 C 8) ways to select the positions for the correct answers and precisely one way to select the remaining two positions for the incorrect answers. Therefore, there are there are 10 C 8 = 45 ways to get 8 correct. Similarly, there are 10 C 9 = 10 ways to get 9 correct, and 10 C 10 = 1 way to get all 10 correct.</span>
3 0
3 years ago
Please help me please!!!
GenaCL600 [577]

Answer:

a is the answer

Step-by-step explanation:

because i said so

5 0
2 years ago
Read 2 more answers
Solve for x. You must show all of your work to receive credit.
Zinaida [17]
V
1) 5x+17
5x=-17
x= -3.4
2) 23x-5
23x=5
x= 0.217

W

1) 37x+5
37x=-5
x= -0.135
5 0
3 years ago
A balloon is rising at a rate of 6 meters per second from a point on the ground 53 meters from an observer. Find the rate of cha
valentina_108 [34]

Answer:

0.0830 radians per second

Step-by-step explanation:

If θ is the angle of elevation and h is the height of the balloon, then:

tan θ = h / 53

Take the derivative of both sides with respect to time:

sec² θ dθ/dt = 1/53 dh/dt

Use Pythagorean identity:

(1 + tan² θ) dθ/dt = 1/53 dh/dt

Substitute:

(1 + (h/53)²) dθ/dt = 1/53 dh/dt

Multiply both sides by 53²:

(53² + h²) dθ/dt = 53 dh/dt

Given dh/dt = 6 and h = 32:

(53² + 32²) dθ/dt = 53 (6)

dθ/dt = 318 / 3833

dθ/dt ≈ 0.0830

The angle of elevation is increasing at a rate of 0.0830 radians per second.

8 0
3 years ago
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