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nadezda [96]
2 years ago
6

Find the speed of a car in miles per hour, if its wheels, that have a diameter of 18 inches, travel at a rate of 10 revolutions

per second.
Mathematics
1 answer:
Svetllana [295]2 years ago
8 0

Answer:

Step-by-step explanation:

circumference=πd=π×18=18π in

distance covered in 1 sec=18π×10=180π in.

distance covered in 1 min=180π×60=10800π in

distance covered in 60 min=10800π×60=648000π in=648000π÷12=54000π ft

=54000π÷3=18000π yards=18000π÷1760≈32.13 miles per hour.

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Add.
baherus [9]
58+28=86.
8+8=16
5+2=7
take the 1 from 16 and add it onto the 7
1+7=8: thats the tens place.
Now we only have 6. So thats the ones place. Combine the two numbers and you get 86.
7 0
3 years ago
Pls help somebody how much does a can of coconut milk holds if 8cm in diameter and 12cm in height
dangina [55]
96ml (base times height | 8 times 12)
6 0
4 years ago
Richard’s store sells pineapples and grapefruits. Pineapples originally cost $5.15 apiece, and grapefruits originally cost $2.25
sveta [45]

Answer:

c. The price of grapefruits experienced a reduction 6.01 percentage points greater than the price of pineapples.

Step-by-step explanation:

The original price of Pineapples=$5.15

New price of Pineapples=$3.88

<u>Find change in price of Pineapples</u>

Change in price=original price- new price

=5.15-3.88=1.27

The price of Pineapple was reduced by $1.27

<u>% reduction in price</u>

(reduction value/original value) × 100

=\frac{1.27}{5.15} *100=24.66

=24.66%

The original price of grape fruits=$2.25

New price of grape fruits=$1.56

<u>Change in price of grape fruit</u>

Change in price= original price -new price

=2.25-1.56=0.69

<u>% reduction in price of grape fruits</u>

(reduction value/original value)×100

=\frac{0.69}{2.25} *100=30.67

=30.67%

<u>Answers</u>

The fruit that has its price reduced by a greater percentage is grape fruit

How many percentage points greater = 30.67%-24.66% = 6.01 points

5 0
4 years ago
Read 2 more answers
What is the proportional eqaution D = n
avanturin [10]

Answer:

You need to provide more info

Step-by-step explanation:

6 0
3 years ago
On a multiple choice test, if you randomly guessed on three questions, then what is the probability you got at least one of them
snow_lady [41]

Answer:

Number of Questions =3

Probability of giving a correct answer

                              =\frac{1}{3}

Probability of giving two correct answers

                       =\frac{2}{3}

Probability of giving all correct answers

            =\frac{3}{3}\\\\=1

Probability that at least one of them is correct

         =_{1}^{3}\textrm{C}\\\\=\frac{3!}{(3-1)! \times1!}\\\\=3 \text{ways}\\\\=\frac{1}{3} \times \frac{1}{3} \times \frac{1}{3} \\\\=\frac{1}{27}

Probability that two of them is correct

         =_{2}^{3}\textrm{C}\\\\=\frac{3!}{(3-2)! \times2!}\\\\=3 \text{ways}\\\\=\frac{2}{3} \times \frac{2}{3} \times \frac{2}{3} \\\\=\frac{8}{27}

Probability that all of them is correct

         =_{3}^{3}\textrm{C}\\\\=\frac{3!}{(3-3)! \times3!}\\\\=1 \text{way}\\\\=1

So, Required probability

         =\frac{1}{27} \times \frac{8}{27} \times 1\\\\=\frac{8}{729}

6 0
3 years ago
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