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slavikrds [6]
2 years ago
11

The diagram below shows a rectangular sheet of cardboard with 2 circular

Mathematics
2 answers:
slamgirl [31]2 years ago
6 0
2 =

3cm =


Explanation - solve the function operation
Aleks [24]2 years ago
3 0

Answer:

Two sector of 90 degree cut out(90*2=180 degree) means semicircle

perimeter of circle= 2πr

= 2*22/7*3=18.85 cm

perimeter of semicircle=18.85/2=9.42 cm approx

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The percentage of students in school that attended the talent show for the years 2008 to 2013 are shown. This year, the school h
Elodia [21]

Answer:

352 students

Step-by-step explanation:

Given

See attachment for table

n = 400

Required

Attendance of students in this year's show

First, we calculate the mean of the table

Mean= \frac{\sum x}{n}

So, we have:

Mean= \frac{85\% + 91\% + 92\% + 87\% +84\% + 89\%}{6}

Mean= \frac{528\%}{6}

Mean= 88\%}

Multiply the mean by the total students

Expected = Mean * n

Expected = 88\% * 400

Expected = 352

7 0
2 years ago
Write your own word problem and share it with the group. Then translate your problem into its resulting math equation. What step
Ainat [17]

Step-by-step explanation:

Word Problems are mathematical problems presented in complete languages, rather than in mathematical notations.

Example:

A certain number is divided by half, the result is added to itself to give 6, what is the number?

Solution:

- Let the number be x

- Divide x by half:

In word problem, extra caution is to be taken, as misinterpretation can be very chaotic. Dividing a number by 2, is totally different from dividing the number by half.

4 divided by 2 is 4÷2 = 2

4 divided by half is 4÷½ = 4×2/1 = 8

2 and 8 are different, reason to be cautious.

So dividing x by half, we have:

x ÷ 1/2 = x × 2/1 = 2x.

- Now, what we have is

2x + x = 6

Solving this equation, we can obtain the value of x.

2x + x = 6

3x = 6

Dividing both sides by 3

3x/3 = 6/3

x = 2.

Therefore, the solution to the word problem is x = 2.

6 0
3 years ago
Write an expression:
kirill [66]

Answer:   T=10-2 x y

Step-by-step explanation: that is the reason

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the answer is c. no relationship

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