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marin [14]
3 years ago
5

Can someone please help with these question

Mathematics
1 answer:
GalinKa [24]3 years ago
7 0

Answer:

1) 81.64 ft      2) 12.56 in

Step-by-step explanation:

a radius is a line <em>halfway</em> through the circle starting in the middle... a diameter is double that, or a line that goes <em>all the way </em>through the circle

you are working with diameter

in order to find the circumference of a circle using diameter, the equation is

C (circumference) = pi x d (diameter)

in order to find the circumference of a circle using radius, the equation is

C = 2 x pi x R (radius)

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Find the value of the following expression and round to the nearest integer:
____ [38]

Answer:

This tool can round very big numbers to a very high precision. ... The calculator defaults to rounding to the nearest integer

Step-by-step explanation:

hope i helped

4 0
3 years ago
There are 3 red marbles in a bag of 12 marbles. A larger bag has a total of 26 marbles, including 7 red marbles. Are the chances
qwelly [4]
Short answer: No

Explanation: if you bring the fractions down as low as possible, the first bag has a 1 in 4 chance of getting a red marble. The 2nd bag can't be brought down anymore because 26 and 7 do not share any common divisors.
8 0
2 years ago
Arlo rented a car. It cost 39.99 plus 0.35 per mile. If Arlo paid 85.49 for the rental car, how many miles did he drive the car?
soldier1979 [14.2K]

Answer:

Arlo drove 130 miles

Step-by-step explanation:

Set up an equation:

39.99+.35x=85.49

.35x=45.5

x=130 miles

7 0
3 years ago
Consider the following expression and determine which statements are true. x^2+5yz−8
statuscvo [17]

Answer:

A.there are 3 terms.

B.the variables are x, y, and z.

Step-by-step explanation:

Complete question below:

Consider the following expression and determine which statements are true. x^2+5yz−8

CHOOSE 2 ANSWERS)

A.there are 3 terms.

B.the variables are x, y, and z.

C.The coefficient of x is 2.

D.the term 5yz is made up of 2 factors

The expression x^2+5yz-8

has three terms namely: x^2, 5yz and -8

The variables are x, y and z

The coefficient of x is 1 not 2, so option c is wrong

The term 5yz is made up of more than two factors namely 5, y, z, 5y, 5z, 5yz . So option d is also wrong.

The correct answers are option a and option b

A.there are 3 terms.

B.the variables are x, y, and z

8 0
3 years ago
How do you write 89,000 in scientific notation
user100 [1]

Answer:

8.9 × 10^{4}

Step-by-step explanation:

Calculating scientific notation for a positive integer is simple, as it always follows this notation: a x 10b.

Follow the steps below to see how 89,000 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

Original Number: 89,000

New Number: 8.9000

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 8 . 9 0 0 0

Decimal Count: 1 2 3 4

There are 4 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 8.9 (Please notice any zeroes on the end have been removed)

b = 4

Now the whole thing:

8.9 x 10^{4}

Step 4

Check your work:

10^{4} = 10,000 x 8.9 = 89,000

5 0
3 years ago
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