51) Rewrite the formula for the circumference of a circle C=2 /pi "r" in terms of its diameter "d". Please show your working :)

Answers

Answer 1
Answer: The circumference of a circle=2\pir
We know that diameter is double the radius, and therefore can be written as d=2r
Circumference of a circle in terms of diameter is C=\pid
The 2r cancels out

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PLEASE ANSWER ASAP !!!!! The difference of 3 times a number and 15 is no less than the square of the number.
Select the inequality that represents this relationship.
+
OA. 3.+ 15 > 12
O B. 3. s
OC. 31 < x2
OD. 3.-
I AL
GELABAIE VREME
O
FALSE
the First
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Answers

Answer: D

Hope this helps!

sorry about the first answer

Why can't you compare 5 minutes in 240 seconds without making some kind of change

Answers

you have to have the same unit of measure. Here your units are "minutes" and "seconds". In order to compare the two, you must change to 240 seconds into minutes (dividing by 60 = 4 mins) OR change the 5 minutes into seconds (multiply by 60 to give you 300 seconds)

Each letter in the expression shown to the right represents a digit other than zero. Different letters represent different digits and the same letter always represents the same digit. What is the smallest whole number that can be the value of this expression?

Answers

Answer:

well if you go by the allaphat then A would be the smallest digit

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

You have a can that is in the shape of a cylinder. It has a volume of about 1,738 cubic centimeters. The height of the can use 23 centimeters. What is the approximate length of the radius? Use 3.14 for pi

Answers

Answer:

~8.7

Step-by-step explanation:

So we know that the formula for volume is 3.14 * r^2 * h.

So first we do 1738/23 to get an ugly ~ 75.6 Now he have to square root that to get r.

The square root of 75.6 is ~ 8.7

In August, the Simons' water bill was $48. In September, it was15% lower. What was the Simons' water bill in September?

Answers

Answer:

40.8

Step-by-step explanation:

4.8 is 10% so 2.4 is 5%

so 7.2 is 15%

so 48-7.2= Simon's water bill in September=40.8

How do yo solve linear equations

Answers

Well, my math teacher told me to use the formula y=mx+b with +b being your y-intercept, mx being your constant or slope, and y= being your answer.EX: Sam is a babysitter who charges a fee of $15 and $5 per hour, how much would she get if she worked for 2 hours.+b would be 15 and m would be 5 and x is 2 and if you solve it would be $25.