MATHEMATICS MIDDLE SCHOOL

A box contains 500 marbles. The result of 20 marbles pulled at random from the box is given below.• 5 red marbles
• 6 blue marbles
• 3 green marbles
• 4 black marbles
• 2 yellow marbles

Based on this information, how many black marbles could be expected in the box?

Answers

Answer 1

Answer:

Answer:

100 black marbles

Step-by-step explanation:

The experimental probability of a black marble is

P(black) = 4/20 = 1/5

We expect that out of the 500 marbles in the box, 1/5 of them are black

1/5 (500) = 100

There should be 100 black marbles

Answer 2

Answer:

100 black marbles can be pulled

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Five more than twice a number is 17
42 is 30%of what number
A number is divided by 32 is 96. What is the number?
HOMEWORK HELP NEED IT FAST PLEASE!1. Write the next two terms in the pattern 12,48,192,768 ___,___, 2. which of the following rules apply to the pattern shown below 8,16,24,32 3. Find the missing term 75,67,59,___,43,45 4. The rule for a pattern is given below start with 96 and divide by 2 repeatedly which two numbers would not be in a term for this pattern 32 24 16 3
You read 50 pages in an hour. Your sister reads 40 pages in an hour. Explain how to find out how many more pages you read than your sister reads in 1/2 hour?A. I know that 50 • 40 = 2,000, so I read 1,000 more pages than my sister reads in 1/2 hour. B. I know that 50 ÷ 40 = 5454, 5 ÷ 4 = 1 1/4, so I read 1 1/4 more pages than my sister reads in 1/2 hour. C. Because I read 10 more pages than my sister reads in 1 hour, I read 5 more pages in 1/2 hour. D. Since 5 • 4 = 20, I read 20 more pages than my sister reads in 1/2 one half hour.

Simplify square root p^4 q^6 r^5

Answers

Answer:

Step-by-step explanation:

A large multiplex movie house has many theaters. The largest theater has 44 rows. There are 20 seats in the first row. Each row has four seats more than the previous row. How many total seats are there in this theater?

Answers

Final answer:

The total number of seats in this movie theater is 4224. This is calculated using the sum of an arithmetic series formula.

Explanation:

The question describes an arithmetic sequence where each row in the theater has four more seats than the previous row. The first row has 20 seats and the last row (44th row) has $20 + 4*(44-1) = 172$ seats. The total number of seats in this theater is therefore the sum of an arithmetic series formula, which is given by:

$S = n/2 * (a + l)$

Where:

S is the sum of the sequence
n is the number of terms
a is the first term
l is the last term

So for the number of seats, we have:

$S = 44/2 * (20 + 172) = 22 * 192 = 4224.$

So, the total number of seats in the theater is 4224.

Learn more about Arithmetic Series here:

brainly.com/question/16415816

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What's 20% as a decimal?

Answers

20%
= 20/100
= 0.2

To convert 20/100 into a decimal, you move left of 20 two decimal places.

The final answer is 0.2.

since its in the tens you would move the decimal two places to the left
0.20 or 0.2

X+y=20 is it linear? is it proportional?

Answers

Linear not proportional good luck

Nope it's not because if it was proportional it would be like y=kx. K stands for a number or the unit rate or the constant of proportionality!

Luis brings 79 pencils to school after he is each of his 15 classmates an equal number of pencils he will give any leftover pencils to his teacher how many pencils will lose teachers will see and if Luis decides to take an equal share the pencils along with his classmates will his teacher receive more pencils are fewer of pencils so you're thinking

Answers

15*5=75
79-75=4
If Luis gives each of his classmates 5 pencils each, he will have 4 leftover to give to his teacher

16*4=64
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If Luis gives himself AND each of his classmates 4 pencils each, he will have 15 leftover to give to his teacher

So... If Luis decides to take an equal share of pencils along with his classmates, his teacher will receive more pencils.

Simplify the expression: 2(4x-3)-7(x+1)