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3 years ago

5. Jonathan spins a spinner that has the numbers

Mathematics

2 answers:

Leno4ka [110]3 years ago

7 0

Answer: It's C. landing on a number that is 8 or less.

seraphim [82]3 years ago

4 0

D) landing on a number greater than 10

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On an eight question true-false quiz, a student guesses each answer. What is the probability that he/she gets at least one of th

Fantom [35]

Answer:

$P[at\ least\ 1] = 0.9961$

Step-by-step explanation:

Given

$Questions = 8$

$Quiz\ Type = True\ or\ False$

Required

Probability that s/he gets at least one correctly

First, we calculate the probability of answering a question correctly

Since, there are just 2 choices (true or false), the probability is:

$P(correct) = \frac{1}{2}$

Similarly, the probability of answering a question, wrongly is:

$P(wrong) = \frac{1}{2}$

The following relationship exists, in probability:

$P[at\ least\ 1] = 1 - P[none]$

So, to calculate the required probability.

First, we calculate the probability that he answers none of the 8 questions correctly.

$P[none] = p(wrong)^8$

$P[none] = (\frac{1}{2})^8$

Substitute $P[none] = (\frac{1}{2})^8$ in $P[at\ least\ 1] = 1 - P[none]$

$P[at\ least\ 1] = 1 - (\frac{1}{2})^8$

$P[at\ least\ 1] = 1 - \frac{1}{256}$

Take LCM

$P[at\ least\ 1] = \frac{256 - 1}{256}$

$P[at\ least\ 1] = \frac{255}{256}$

$P[at\ least\ 1] = 0.9961$

Hence, the probability that s/he gets at least one correctly is 0.9961

6 0

3 years ago

A toy train is on a circular track. Luis lets the train run 60 degree around the track. Then he lets it run another 120 degree a

NeX [460]

The train would have traveled 40 degrees around the track.

7 0

3 years ago

Read 2 more answers

Pls help asap

jenyasd209 [6]

Answer:

it would be everything multiplied by 10

500

280

200

Step-by-step explanation:

3 0

3 years ago

Find all real zeros of the function y= -9x - 1

Svetllana [295]

Answer: -1/9 which is choice B

Explanation:

The term "zeros" refers to the x intercepts.

Plug in y = 0 and solve for x.

y = -9x-1

0 = -9x - 1

9x = -1

x = -1/9

6 0

2 years ago

Read 2 more answers

Find how many solutions there are to the given equation that satisfy the given condition.

den301095 [7]

Answer:

17550 solutions

Step-by-step explanation:

Given that:

y1 +y2+y3+y4=27

where;

(yi ≥ 0 and yi $\epsilon$ $\mathbb {Z}$ )

The no. of a nonnegative integer determines the number of ways to choose 27 objects from (4) distinct objects with repetition regardless of the order.

i.e

$\bigg(^{27}_{4} \bigg)$

∴

The number of nonnegative integer solution is $\bigg(^{27}_{4} \bigg)$

$= \dfrac{27!}{4!(27-4)!}$

$= \dfrac{27!}{4!(23)!}$

$= \dfrac{27\times 26\times 25\times 24 \times 23 !}{4\times 3\times 2\times 1(23)!}$

$= \dfrac{27\times 26\times 25\times 24 }{4\times 3\times 2\times 1}$

$= \dfrac{421200}{24}$

= 17550 solutions

7 0

3 years ago