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4 years ago

Simplify the expression with the given variable’s ?! 3r-4s, when r= 5 and s= 2/3

Mathematics

2 answers:

Arada [10]4 years ago

6 0

Answer:

12.33

Step-by-step explanation:

3r-4s

3×5-4×2/3

15-8/3

12.333

fomenos4 years ago

4 0

The answer to this is 12.33

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If the truck has a mass of 2,000 kg and is traveling with a velocity of 35 m/s, what is its momentum?

Zigmanuir [339]

Answer:

Solution:-

Step-by-step explanation:

given ,

mass (m) =2000kg

velocity (v) = 35m/s

now ,

momentum (p) = m×v

=2000×35

= 70000 kg . m/s .|

5 0

3 years ago

A stack of cards is numbered 1 through 50 if a student selects a card what is the probability that the student will select a car

maw [93]

Answer:

The probability that the student will select a card that has both the same number in the ones place in the tens place is 0.08

Step-by-step explanation:

To solve this exercise we have to know that the probability is calculated by dividing the number of favorable events by the number of possible events.

f = favorable events

we will count how many numbers between 1 and 50 have the same number in the ones place in the tens place

11 ; 22 ; 33 ; 44

as we can see there are 4 numbers

f = 4

p = possible events

the number of possible events is given by the number of cards in the deck

p = 50

4/50 = 0.08

The probability that the student will select a card that has both the same number in the ones place in the tens place is 0.08

7 0

3 years ago

As a maintenance electrician, it takes you 40 minutes to rewire a motor. You have 6 motors to rewire.

bazaltina [42]

Answer:

The maintenance electrician takes 287.555555566667 hours to to rewire all the motors

Step-by-step explanation:

1. Calculate all of the minutes for all the numbers.

It takes you 26.6666667 minutes to rewire 2/3 of a motor.

It takes you 160 minutes to rewire 4 motors.

It takes you 266.666667 to rewire 6 2/3 motors

It takes you 7,200 minutes to rewire 180 motors

It takes you 9,600 minutes to rewire 240 motors

2. Add all of the minutes together.

26.666667 + 160 + 266.666667 + 7,200 + 9,600 = 17253.333334

It takes you 17253.333334 minutes to rewire 431.333333 motors

3. Convert minutes to hours

17253.333334/60 = 287.555555566667

It takes you 287.555555566667 hours to rewire all the motors

7 0

3 years ago

She must throw two fair dice.

sveticcg [70]

So the probability that she will get a six on die 1 is 1/6 and the probability she will get a 6 on die 2 is also 1/6 add these together and the probability she will get two 6’s is 2/12 meaning that the probability she won’t is 12/12 - 2/12 = 10/12

5 0

3 years ago

please help all you gotta do is match it thank you so much also if you could please explain it too thank you i would appreciate

g100num [7]

Answer:

1/2 = 3/6

1/3 = 4/12

1/5 = 2/10

1/4 = 5/20

Step-by-step explanation:

To make equivalent fractions, you need multiply by 1. A number divided by itself is 1.

1/1 * x/x = x/x = 1