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Marianna [84]
3 years ago
15

Probability Answer There are 10 cards laying down flat.

Mathematics
1 answer:
natulia [17]3 years ago
8 0

Answer:

picking a C is 5/10 or 1/2

Step-by-step explanation:

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77 because 4.9 Times 10 Times 3 equals 147 and 1.4 Times 10 Times 5 equals 70 then you would subtract 70 from 140 and get 77
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7

Step-by-step explanation:

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3 years ago
A truck driver travels at 59 miles per hour. The truck tires have a diameter of 30 inches. What is the angular velocity of the w
Misha Larkins [42]

Answer:

661.4\ rpm

Step-by-step explanation:

we know that

1 mile=63,360 inches

step 1

Find the circumference of the wheels

C=2\pi r

we have

r=30/2=15\ in -----> the radius is half the diameter

substitute

C=2\pi(15)

C=30\pi\ in

assume

\pi =3.14

C=30(3.14)=94.2\ in

Remember that    

The circumference of the wheels represent one revolution

Convert 59 miles per hour to inches per minute

59\ mi/h=59*63,360/60=62,304\ in/min

using proportion find the number of revolutions  

\frac{1}{94.2}\frac{rev}{in}=\frac{x}{62,304}\frac{rev}{in}\\ \\x=62,304/94.2\\ \\x=661.4\ rev

therefore

substitute

62,304\ in/min=661.4\ rev/min=661.4\ rpm

5 0
3 years ago
Is Ronald correct because 80,000,000 + 6,200 = 142,000,000,000. yes or no
Lemur [1.5K]

Answer: Yes

Step-by-step explanation:

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6 0
3 years ago
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Answer:

-2x +4 = 20

Step-by-step explanation:

given

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by making x the subject, you need to subtract 4 from 20

thus

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and also you need to divide through by -2

\frac{ - 2x}{2}  =  \frac{16}{ - 2}

x =  - 8

3 0
3 years ago
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