A spinner is divided into 8 section of equal size. The sections are numbered 1 through 8. Use this information to determine the probability of the needle landing on

1) 1/8

2) 1/2

Step-by-step explanation:

1)

First of all, we notice that the spinner is divided into 8 sections of equal size.

So the number of sections is

n = 8

Secondly, we note that each section has the same size: this means that the probability of the spinner landing on each section is the same.

The probabilty of a certain event A to occur is given by

where

a is the number of successfull outcomes (in which A occurs)

n is the total number of possible outcomes

Here we want to find

= probability that the spinner lands on section 7

Here we have:

(only 1 outcome is successfull: the one in which the spinner lands on section 7)

Therefore, the probability is

2)

Here we want to find the probability that the spinner lands on an even numbered section.

As before, the total number of possible outcomes his:

which corresponds to: 1, 2, 3, 4, 5, 6, 7, 8

The even-numbered sections are:

2, 4, 6, 8

So, the number of successfull outcomes is

Because there are only 4 even-numbered sections.

Therefore, the probability that the spinner lands on an even numbered section is:

mk./km: lm

step-by-step explanation:

,mlmlm

; mk

lk

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: