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4 years ago

A box contains 500 marbles. The result of 20 marbles pulled at random from the box is given below.

Mathematics

2 answers:

Anni [7]4 years ago

8 0

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

Shalnov [3]4 years ago

3 0

100 black marbles can be pulled

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NEED HELP

blagie [28]

Answer:

Range: [-7, 8]

General Formulas and Concepts:

<u>Algebra I</u>

Reading a coordinate plane
Range is the set of y-values that are outputted by function f(x)
Interval Notation: [Brackets] denote inclusion, (Parenthesis) denote exclusion

Step-by-step explanation:

According to the graph, our y-values span from -7 to 8. Since both are closed dot, they are included in the range:

Range: [-7, 8]

3 0

3 years ago

II.) Simplify the following by applying the laws of indices.

Alik [6]

S I took a test and got it right

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3 years ago

What is 7/2 divided by 49/4?

ruslelena [56]

Answer:

$\frac{2}{7}$

Step-by-step explanation:

$\frac{7}{2}$ ÷ $\frac{49}{4}$ needs to be flipped and multiplied.

It will become $\frac{7}{2}$ · $\frac{4}{49}$ .

Simplify the fractions by replacing 7 with 1 and 49 with 7, since 7 is 1/7 of 49. Then, turn the 2 into a 1 and the 4 into a 2, since 2 is half of 4.

You will be left with 1 · $\frac{2}{7}$ , which equals $\frac{2}{7}$

4 0

3 years ago

Find all critical values of the function g(x)=5/(x²-x+6)

Sati [7]

$g(x)=\frac{5}{x^2-x+6}\\\\D:x^2-x+6\neq0\\\\\Delta=(-1)^2-4\cdot1\cdot6=1-24=-23 < 0\\\\x\in\mathbb{R}\\\\vertex\ of\ y=x^2-x+6\\\\p=\frac{-(-1)}{2\cdot1}=\frac{1}{2}\\\\q=\frac{-(-23)}{4\cdot1}=\frac{23}{4}\\\\\lim\limits_{x\to\frac{1}{2}}\frac{5}{x^2-x+6}=\frac{5}{\frac{23}{4}}=\frac{5\cdot4}{23}=\frac{20}{23}$

$\lim\limits_{x\to\pm\infty}\frac{5}{x^2-x+6}=0$

3 0

3 years ago

Given that 1 inch = 2.54 cm, how many centimeters are there in 3 feet? Answers may be written using decimal form and should be r

Olin [163]

Answer:

There is <u>91.44 centimeters</u> in 3 feet.

Step-by-step explanation:

First, you would have to know that there are 12 inches in 1 feet. So, if you do 12 x 3, you would get 36 inches to equal 3 feet. Then, you can do 36 x 2.54 and get your answer of 91.44 centimeters.

5 0

3 years ago