Find the radius and circumference of a cd with a diameter of 4.75 inches

Answers

Answer 1

Answer: To calculate for the radius, we divide the given diameter by 2. That would be 4.75 inches/2. This operation would give us the answer of 2.375 inches. The circumference is calculated by the formula, C = 2πr: C = 2(π)(2.375 inches) = 14.92 inches

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A square has a triangular hole in it. What is the area of the figure?A. 100 in²
B.92.5 in²
C. 85 in²
D. 70 in²

Answers

B. 10 x 10 = 100. 5 x 3 / 2 = 7.5. 100 - 7.5 = 92.5

Answer:

92.5in

Step-by-step explanation:

10 * 10 = 100

5 * 3 = 15

15/2 = 7.5

100 - 7.5 = 92.5in

The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is
randomly selected.
a. Find the probability of selecting a number less than 16 or a number written in red.
b. Find the probability of selecting a number written in blue or a multiple of 5.

Answers

A. we want to pull 15 or less from the bag and there are 100 possibilities
$(15)/(100)$ = $(3)/(20)$
the probability is 3 out of 20

B. we are trying to pull a 55,60,65,75,80,85,90,95,or 100 that is 9 possibilities out of 100

$(9)/(100)$ is the possibility of pulling a multiple of 5 that is blue

a. The probability of picking a number less than 16 or a number in red is 65/100.
b. The probability of picking a number written in blue or a multiple of 5 is 70/100.

Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds.

Answers

Answer:

Average speed(S) is given by:

$S =(D)/(t)$ ....[1]

where,

D is the total distance and t is the time.

As per the statement:

A gazelle that runs 140 meters in 5.0 seconds.

⇒D = 140 meters and t = 5 seconds

Substitute in [1] we have;

$S =(140)/(5)$

Simplify:

⇒S = 28 m/sec

Therefore, average speed of a gazelle is, 28 m/sec

You would multiply to find the average meters/minute.
140 x 5.0 = 700.
But, if you're looking for average m/s you would divide.
140/5 = 28.
If you want meters/hour, you have to multiply the average meters/minute by 60.
140 x 5 x 60 = 4,200.

I'm not sure which one you're looking for but I hope something I wrote helps!

The length of a rectangle is 4 cm more than the width and the perimeter is at least 40 cm. What are the smallest possible dimensions for the rectangle, in cm?

Answers

Answer:

Try timesing

Step-by-step explanation:

Kate has gone up to the chalkboard to do math problems 5 more times than Andre. Kate has gone up 11 times. Which equation represents this situation?A- a - 11 = 5

B- 5a = 11

C- a - 5 = 11

D- a + 5 = 11