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2 years ago

Am stuck on this question and show your working please.

Mathematics

1 answer:

Tamiku [17]2 years ago

5 0

Answer:

1. 6pi or 18.84cm

2. 20pi or 62.8cm

3. 13pi or 40.82cm

4. 9.5pi or 29.83cm

5. You calculate the circumference of a circle with the expression 2pi(r). r stands for the radius. You can also use pi(d), or pi x diameter.

7. You would use 2pi(r) to find the circumference of a circle when given the value of the circle's radius.

8. You would use pi(d) to find the circumference of a circle when given the value of the circle's diameter.

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Ok I need help um thanks :)

strojnjashka [21]

Answer:

40% male and 60% female

Step-by-step explanation:

Add all the experiments, and then divide the variables by the number of experiments

Variables :T and H

8 0

3 years ago

Read 2 more answers

Subtract 5x^2 – 2x – 5 from – 2x^2<br> - 5x - 7

user100 [1]

Answer:

$-7x^{2} -3x-2$

Step-by-step explanation:

$(-2x^2-5x-7) - (5x^2-2x-5)\\\\-2x^2 - 5x^2 = -7 x^2\\-5x - -2x = -3x\\-7 - -5 = -2 \\Result: -7x^2-3x-2$

3 0

2 years ago

Read 2 more answers

Mr.Mole left his burrow and started digging his way down at a constant rate

Svetlanka [38]

Answer:

Mr. Mole is descending by 2.4 meters per minute

Step-by-step explanation:

Let

x ----> the time in minutes

y ---> the distance in meters

we know that

In this problem the rate of change or slope is the same that the speed

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

take two points from the table

(5,-18) and (8,-25.2)

substitute the values in the formula

$m=\frac{-25.2+18}{8-5}$

$m=-2.4\ meters\ per\ minute$ ---> is negative because is descending

7 0

2 years ago

At the movie theatre, child admission is $6.20 and adult admission is $9.30 . On Monday, 157 tickets were sold for a total sales

Andre45 [30]

C = child tickets
a= adult tickets

c + a = 157
6.20c + 9.30a = 1178.00

6.20c + 9.30a = 1178.00
-6.20c -6.20a = -973.40

3.10a = 204.60

a = 66 adult tickets

c + 66 = 157
-66. -66

c= 91 child tickets

8 0

3 years ago

Which phrase describes the algebraic expression 10 + w ?

grin007 [14]

Answer:

The correct answers would be A

Step-by-step explanation:

I know this because I asked my mom and said it a question to my homework

3 0

2 years ago