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Alexandra [31]
3 years ago
9

The spinner has eight spaces of equal size. What is the mathematical probability of the pointer's stopping in the space marked 1

? If you spin the pointer 40 times, how many times would you expect it to stop on 1?
Mathematics
2 answers:
Advocard [28]3 years ago
6 0

Answer:

10/40

Step-by-step explanation:

serg [7]3 years ago
6 0

Answer:

The probability that the pointer stops on 1 is 1/8, since there are 8 sections.

If you spun it 40 times, you would expect it to land on 1 5 times.

Step-by-step explanation:

There are equal pieces, so the probability of landing on each is the same : 1/8

To find the amount of times you would expect it to land on 1 if you spun it 40 times, simply multiply the probability by 40. 40 * 1/8 = 5.

Hope this helps :)

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A corporate team-building event costs $32, plus an additional $1 per attendee. If there are 66 attendees, how much will the corp
faust18 [17]

Answer:

corporate team-building event cost will cost $98

Step-by-step explanation:

A corporate team-building event costs $32, plus an additional $1 per attendee.

Let cost be C

The expression for the above statement

C($)= 32+n(1)

Where n is the number of attendees

So a situation where there are 66 attendees, the total cost will be

C($) = 32 +66(1)

C($) = 32+66

C($)= 98

3 0
4 years ago
Prove that if r is any rational number, then 3r2 − 2r + 4 is rational. The following properties may be used in your proof. Prope
ziro4ka [17]

Given:

Expression is

3r^2-2r+4

To prove:

If r is any rational number, then 3r^2-2r+4 is rational.

Step-by-step explanation:

Property 1: Every integer is a rational number. It is Theorem 4.3.1.

Property 2: The sum of any two rational numbers is rational. It is Theorem 4.3.2.

Property 3: The product of any two rational numbers is rational. It is Exercise 15 in Section 4.3.  

Let r be any rational number.

We have,

3r^2-2r+4

It can be written as

3(r\times r)-2r+4

Now,

3, -2 and 4 are rational numbers by property 1.

r^2=r\times r is rational by Property 3.

3r^2\text{ and }-2r are rational by Property 3.

3r^2+(-2r)+4 is rational by property 2.

So, 3r^2-2r+4 is rational.

Hence proved.

6 0
3 years ago
What is the product?<br><br> (3x-8)(2x²-7x-1)
hichkok12 [17]

Answer:

Product is   6x³ - 37x² + 53x + 8

Step-by-step explanation:

8 0
3 years ago
72.1 divided by 7<br> Estimate the quotient
Ulleksa [173]
Do 72 divided by 7 to get your answer
4 0
3 years ago
Read 2 more answers
I REALLY NEED ANSWERS NOW!!
Andreyy89

Answer:

7

Step-by-step explanation:

24-17= 7

therefore

the difference between -17 &-24 is also 7

4 0
3 years ago
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