All categories

3 years ago

SOMEONE HELP ASAP PLEASE. Answers and links that have nothing to do with the question will be reported.

Mathematics

1 answer:

Serhud [2]3 years ago

5 0

Answer:

$\frac{1}{15}$

Step-by-step explanation:

There are 2 yellow marbles, 3 pink marbles, and 5 blue marbles in the bag, for a total of 10 marbles.

Let's start with the probability that the first marble drawn is pink. Since there are 3 pink marbles out of the 10 total marbles, the probability of this happening is $3/10$ .

Since the first marble is not put back in the bag, there are now 9 marbles left, 2 of then being pink. The chances of drawing a pink marble now is $2/9$ . To find the chances of both of these events happening, multiply them together to get:

$\frac{3}{10}\cdot \frac{2}{9}=\frac{6}{90}=\boxed{\frac{1}{15}}$

You might be interested in

A copper key is placed in a cylindrical container with a 3-cm diameter. The water level rises from 14 cm to 14.6 cm. What is the

Tomtit [17]

Answer:

The volume is about 4.24 cm^3.

Step-by-step explanation:

From the question we are told that:

Diameter $d= 3-cm$

Radius $r=d/2=>1.5cm$

Height risen $14.6-14=0.6cm$

Generally the equation for Volume of a Key is mathematically given by

Since Volume of a cylinder is Given as

$V=\pir^2h$

Therefore

$V=\pi*1.5^2*0.6$

$V=4.2417\\\\V=4.24 cm^3$

Correct Option A

The volume is about 4.24 cm^3.

3 0

3 years ago

Need help with Math (Quadratic)

BaLLatris [955]

Answer:

f(x) = 2(x -3)² +5 or f(x) = 2x² -12x +23

Step-by-step explanation:

The equation of a quadratic is easily written in vertex form when the coordinates of the vertex are given. Here, the point one horizontal unit from the vertex is 2 vertical units higher, indicating the vertical scale factor is +2.

<h3>vertex form</h3>

The vertex form equation for a parabola is ...

f(x) = a(x -h)² +k . . . . . . vertex (h, k); vertical scale factor 'a'

<h3>equation</h3>

For vertex (h, k) = (3, 5) and vertical scale factor a=2, the vertex form equation of the parabola is ...

f(x) = 2(x -3)² +5 . . . . . vertex form equation

Expanded to standard form, this is ...

f(x) = 2(x² -6x +9) +5

f(x) = 2x² -12x +23 . . . . . standard form equation

8 0

2 years ago

To be considered for pilot school, 12 students took a spatial reasoning test that resulted in this list of scores. find the perc

Brums [2.3K]

<span>a. 17th percentile First, take the data and sort it in increasing order, getting: 98 101 117 121 122 127 130 137 138 143 145 152. The score of 117 is greater than 2 of the scores out of a total of 12 scores. So the percentile rank is 2/12 = 0.1666667 = 16.66667, or the 17th percentile. Therefore the answer is "a. 17th percentile"</span>

7 0

3 years ago

I need to know the answer to this

Ira Lisetskai [31]

Answer is 128. 90-38=52 52+180= 232. 360-232=128. I hope this helps

6 0

3 years ago

Read 2 more answers

What is the total number of relative maximum and minimum points of the function whose derivative for all x is given by f ‘ (x) =

Alexeev081 [22]

Answer:

There are in total 3 maximum and minimum points of f(x)

Step-by-step explanation:

To find the number of stationary points (maximum and minimum points) in any function (f(x)), we need to find for what values of x does the derivative of f(x) equal to 0.

mathematically, for how many values of x does f'(x) = 0

$f'(x) = x(x-3)^2(x+1)^4$