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4 years ago

PLZ HELP ASAP !!! MARKIN BRAINIEST !!!

Mathematics

1 answer:

vovikov84 [41]4 years ago

4 0

Answer:

PLZZZZ I WANT BRAINIEST IM ONLY IN MIDDLE SCHOOL PLZZZZ BRAINIEST!

Step-by-step explanation:

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draw3 rows with 2 counters in each row write a word problem that can be acted out using these counters

Gnoma [55]

Pretend * is counter

* * *
* * *

the word problem could be in a box of chocolates there is 3 rows and 2 chocolates in each row how many chocolates are there total.

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3 years ago

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Find the value of 1/3 divided by 1/2

Arisa [49]

When dividing two fractions, it is important to know to multiply the first fraction by the reciprocal of the second fraction.

Reciprocal means basically a flipped fraction. 2/3 as a reciprocal is 3/2, etc.

1/3 / 1/2= 1/3 x 2/1=2/3

8 0

3 years ago

There are 30 balls numbered 1-30 in a bag. One is randomly selected 12 times. What is the probability of getting a prime number

Sliva [168]

Answer: The probability of getting a prime number exactly five times = 0.1908

Step-by-step explanation:

Prime numbers from 1 to 30 are 2,3,5,7,11, 13, 17, 19, 23, 29.

The probability of getting a prime number p= $\dfrac{10}{30}=\dfrac13$

Number of trials n = 12

Binomial probability formula:

$P(X=x) = \ ^nC_x p^x(1-p)^{n-x}$

, where x= number of successes

n= number of trials.

x = Number of successes

p= probability of getting one success.

The probability of getting a prime number exactly five times:

$P(X=5)=\ ^{12}C_5(\frac13)^5(1-\frac13)^{7}$

$=\frac{12!}{5!7!}(\frac1{243})(\frac{128}{2187})\\\\=0.1908$

Hence, the probability of getting a prime number exactly five times = 0.1908

4 0

3 years ago

Missing the y-value in the table?

jeyben [28]

Answer:

-1

Step-by-step explanation:

The constant rate of change is -y for every one x.

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3 years ago

Mrs. Chin paid a 20% tip on the bill for lunch if the tip amount was $2.75 what was the bill for lunch before the tip was added

Lelu [443]

Answer:

$13.75

Step-by-step explanation:

the bill before the tip is x.

0.20x = 2.75

now divide both sides by .20

x= 2.75/0.20

x=13.75

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3 years ago

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