1 year ago

A rectangular piece of paper with length 30cm and width 12cm has two semicircles cut out of it, as shown below.

Mathematics

1 answer:

Lubov Fominskaja [6]1 year ago

7 0

Answer:88.5cm

Mark me brainliest

Step-by-step explanation:

You might be interested in

Patrick left an $8 tip on a $50 restaurant bill. What percent tip is that?

Gnoma [55]

Do 50 multiplied by x = 8. Solve for x.
It would give you .16 which is 16%.

3 0

2 years ago

11.68 - 0.48 ÷ (-1.6) = <br><br> need help I need a way to solve this problem

ExtremeBDS [4]

Step-by-step explanation:

11.68-0.48

= 11.20

11.20÷1.6

= 7.0 or 7

ahh this is the correct answer.

so if it helps don't forget to like and Mark me.

4 0

2 years ago

Read 2 more answers

At John Dean High School, 42

son4ous [18]

C.48

110 students
- 42 photography
———
68

Now you must account for the fifteen who are in dual enrollment so 35-15=20

68
- 20
____
48

5 0

2 years ago

Round each number to the nearest ten 24. 311. 107

astraxan [27]

Answer:

24-20 311-310 107-110

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

2.6.5 A plant physiologist grew birch seedlings in the green-house and measured the ATP content of their roots. (See Example 1.1

Ilya [14]

Answer:

$(a)\ \bar x = 1.19$

$(b)\ \sigma_x = 0.18$

Step-by-step explanation:

Given

$n = 4$

$x: 1.45\ 1.19\ 1.05\ 1.07$

Solving (a): The mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x = \frac{1.45 + 1.19 + 1.05 + 1.07}{4}$

$\bar x = \frac{4.76}{4}$

$\bar x = 1.19$

Solving (b): The standard deviation

This is calculated as:

$\sigma_x = \sqrt{\frac{\sum(x - \bar x)^2}{n - 1}}$

So, we have:

$\sigma_x = \sqrt{\frac{(1.45 -1.19)^2 + (1.19 -1.19)^2 + (1.05 -1.19)^2 + (1.07 -1.19)^2}{4 - 1}}$

$\sigma_x = \sqrt{\frac{(0.1016}{3}}$

$\sigma_x = \sqrt{0.033867}$

$\sigma_x = 0.18$

4 0

2 years ago