in a bag there are 10 balls numbered 1 to 10 A ball is picked at random find the probability of picking the following
(a) number 7
(b) an odd number
(c) an even number
(d) an prime number
Answer:
a) 1/10
b) 1/2
c) 1/2
d) 2/5
Step-by-step explanation:
Probability is the likelihood or chance that an event will occur.
Probability = Total event/Total sample space
Since there are ten ball in the bag numbered 1 to 10
S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
n(S) = 10
Total sample space = 10
a) If we are to get the probability of picking the number 7.
(E) = {7}
n(E) = 1
Event = 1
Pr(picking 7) = 1/10
b) a) If we are to get the probability of picking an odd number
(E) = {1, 3, 5, 7 , 9}
n(E) = 5
Event = 5
Pr(an odd number) = 5/10 = 1/2
c) a) If we are to get the probability of picking an even number
(E) = {2, 4, 6, 8,10}
n(E) = 5
Event = 5
Pr(an even number) = 5/10 = 1/2
d) a) If we are to get the probability of picking prime
(E) = {2, 3, 5, 7}
n(E) = 4
Event = 4
Pr(prime) = 4/10 = 2/5
Which expression represents four more than twice a number?
Group of answer choices
2n + 4
4 + 2
n2 + 4
2n - 4
Answer:
2n+4
Step-by-step explanation:
3n - 5 =22 what is the value of n
Answer:
n = 9
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
3n - 5 = 22
Step 2: Solve for n
Add 5 to both sides: 3n = 27Divide 3 on both sides: n = 9PLS HURRY THIS IS 50 Points FOR YOU!!!
Answer:
-2, also yeet
Step-by-step explanation:
Answer:
-0.25
Step-by-step explanation:
xD im a bit late :P
we can pick any 2 points on the line.
let's pick, (-1, 2) and (-3, 1)
Alright, so the formula to calculate slope is in the attachment below.
If you're a bit confused on what the little 2 and 1 at the bottom of each of those numbers are representing the points. So let's say (-3, 1) is point 2. And (-1, 2) is point 1.
the variable "y" is the y-coordinate.
the variable "x" is the x-coordinate.
And all we need to do now is just sub in the values and that's your answer.
so we have the 2 y-coordinates, 1 and 2.
We subtract them. 1-2=-1
then we have the 2 x-coordinates, -1, -3
-1-3=-4
so -1/-4 is -0.25
I am not sure if this is right -___- but this is what I've been taught sooooo :?
What is the slope of the line that passes through the points (3,-5) and (1,-5)? In simplest form.
Answer:
Step-by-step explanation:
The way to find slope is by y2-y1/x2-x1 which gives you slope ,but if you just want the answer its zero.
Can someone help I’ll give brainliest??
pls help i don’t understand this lolllll
Answer:
x=28
y=23
Step-by-step explanation:
Plzzzzzz helpppppppp! I’ll give brainliest to whoever gives me the answer
Answer:
26
Step-by-step explanation:
180-128=52
52/2=26
Find the value of x when 6−4x=6x−8x+8.
Answer:
8x+8.
Step-by-step explanation:
Can anyone please help me with this multiple choice for 10 points! ANSWER ONLY IF YOU KNOW! Question 4
Answer:
question 4.
D (x-10)
Step-by-step explanation:
question 4.
x^2 - 8x - 20
(x -10)(x+2)
x² + 8x - 20 [-20 = -2 × 10]
x² - 2x + 10x - 20 [8 = -2 + 10]
x(x - 2) + 10(x - 2)
(x + 10) (x - 2)
___________________________________________
A. x - 2
represents a factor
15/3 = ?/1. what's the missing unit rate
Answer:
5
Step-by-step explanation:
15/3 is the same as 5 since 5*3 is 15
Jaxon must sell at least 49 rolls of wrapping paper to support the robotics club fundraiser. He has already sold 24 rolls of wrapping paper. Which inequality best represents the number of rolls of wrapping paper Jaxon still needs to sell
Answer:
x≥25
Step-by-step explanation:
Step one:
given data
Jaxon must sell at least 49 rolls of wrapping paper to support the robotics club fundraiser
We are told that he has already sold 24 rolls of wrapping paper.
Step two:
let x be the number of rolls remaining to be sold,
hence,
x≥49-24
x≥25
Therefore the inequality for the situation is x≥25
which reads that x must be greater than or equal to 25
work out the area of this semi circle
Answer:
39.27
Step-by-step explanation:
The area of a semi-circle is pi times the radius squared divided by 2. So basically standard area of a circle formula (pi times the radius squared) but then you add in the extra step of dividing it by 2.
The formula looks like this:
π × r² ÷ 2
The radius is half the diameter of the circle. So basically think of it as a line to the middle of the circle. Our diameter is 10, (the diameter is the entire length of the circle. It gives us this already. If you need diameter and only have the radius add the radius together twice or multiply it by 2 to get the diameter. Fun fact..?)
and it tells us to substitute pi for 3.142.
So, plugging our numbers in we get:
3.142 x 5^2 ÷ 2 = 39.275.
Cut out the 3rd decimal place (5) as it tells us to only include the first 2 decimal places, and we finally end up with 39.27.
Hope this helps and have a nice day!
Ramiro se dedica a circular terrenos se le presenta un trabajo se circular un terreno cuadrado con una superficie de 470 metro cuadrados y le piden que lo circulen con 4 hilos de alambre de puas sobre postes. ¿cuantos metros lineales con alambre de puas nesecita?
Answer:
346.88 meters
Step-by-step explanation:
Given that the area of the square-shaped terrain is 470 square meters.
Let a be the side of the terrain, so
Area of the square-shaped terrain, [tex]a^2=470[/tex] square meters.
Therefore, the length of one side, [tex]a=\sqrt {470}=21.68[/tex] meters.
The length of single thread wire required in circulating the square-shaped terrain = the perimeter of the square-shaped terrain
As the perimeter of a square having side a = 4a
So, the length of single thread wire required in circulating the square-shaped terrain= 4 x 21.68 =86.72 meters
Therefore, the length of 4 thread wire required in circulating the square-shaped terrain= 4 x 86.72=346.88 meters.
through (2, -4) and parallel to y= 9/2x+3
Answer:
y=[tex]\frac{9}{2\\}[/tex] x-13
Step-by-step explanation:
first, since it's parallel the slope has to be the same and the y-intercept has to be different.
you will have y=9/2x+b
find b, by using the points you are given so you will get
-4=(9/2) times (2)+b.
then when sloving you will get b=-13 and so the full equation will be
y=9/2x-13
A business man wants to gain more profit every day. If we are going to relate it to a parabola, the vertex should always be at its _______________ to illustrate that his business is always gaining.
a. maximum
b. minimum
c. break-even
d. origin
Is x = 1 a solution of the equation 2 - 8x = -6? *
(5 Points)
Yes
No
The answer is yes ....................
WILL GIVE 12 POINTS!
PLEASE HELP FAST!!!
SEE PICTURES ABOVE↑
Answer:
What are we supposed to put in the boxes?!?!?!?
Step-by-step explanation:
Please help! Will mark Branliest!
In Game 2, your score started at 2 and doubled every time. Two expressions below represent your score after 12 hits. Select both.
Answer:
B and D
Why are both of the answers to the last question correct?
An exponent is a short way to write repeated multiplication. So 212 means the same as 2 • 2 • . . . • 2 • 2.
I will mark brainliest and give all points (100pts)
Answer:
its 1,b 2,c 3,a
so letter C
Step-by-step explanation:
Have a wonderful day!
um. 100 points to who answers this LOL
Answer:
i have no idea to big of a question byt why would your teacher give you that kind of math
Step-by-step explanation:
Find the perimeter of the figure below.
Answer:
ur ans is B) 96mm
Step-by-step explanation:
If it's ok...PLZ mark it as brainliest
Which is bigger 67% or 3/5 Please help me
Answer:
67%
Step-by-step explanation:
This is because 67% is basically 67/100 as a fraction and 3/5 is only 60%, all you need to know is the facts about fraction to percentage
Please help super easy question, just want to confirm I have the right answer
Answer:
L to M is 90 degrees
Step-by-step explanation:
Hope this helps!
Answer:
180
Step-by-step explanation:
i straight line is equal to 180
PLEASE HELP, WILL VOTE BRAINLIEST
Write an explicit function to represent the following sequence.
3,9, 27, 81,...
Answer:
The equation would be if y is the numbers in the sequence (like 3, 9, 27) and x is the is the number in the order (like 3 is 1, 9 is 2, 81 is 4) the the equation would be y = 3^x.
Step-by-step explanation:
can someone help me
Answer:
A
Step-by-step explanation:
the bottom ones don't make sense, and b says if she heals then she WONT play
sanjay2009jsanjay2009jsanjay2009j
Answer:
Thanks for the points
Step-by-step explanation:
Point B is halfway between A and C. The distance from C to D is the same as the distance from D to E, which is the same as the distance from E to F. The area of triangle ACF is 180 cm2. How many square centimeters is the shaded area of triangle BCE?
Answer:
3
Step-by-step explanation:
3
ΔBCE is half the base length and two third the height of ΔACF, therefore,
the area of ΔBCE is less than half the area of ΔACF.
The area of triangle ΔBCE is 60 cm².
Reasons:
In ΔACF, we have;
B = The midpoint of AC
Point E and point D are points on side CF
Distance C to D = Distance D to E = Distance E to F
Area of ΔACT = 180 cm²
Required:
Area of ΔBCE
Solution:
[tex]Area \ of \, \Delta ACF = \mathbf{\dfrac{1}{2} \times AC \times CF} = 180 \ cm^2[/tex]
[tex]In \ \Delta BCE, \, BC = \dfrac{1}{2} \times AC \ and \ CE = \dfrac{2}{3} \times CF[/tex]
Therefore;
[tex]Area \ of \ \Delta BCE = \dfrac{1}{2} \times BC \times CE = \dfrac{1}{2} \times \left(\dfrac{1}{2} \times AC \ \right) \times \dfrac{2}{3} \times CF[/tex]
[tex]\dfrac{1}{2} \times \left(\dfrac{1}{2} \times AC \ \right) \times \dfrac{2}{3} \times CF = \dfrac{1}{2} \times \dfrac{2}{3} \times \left(\dfrac{1}{2} \times AC \ \right)\times CF = \mathbf{\dfrac{1}{3} \times Area \ \Delta ACF}[/tex]
Therefore;
[tex]Area \ of \ \Delta BCE = \dfrac{1}{3} \times Area \ \Delta ACF = \dfrac{1}{3} \times 180 = 60[/tex]
The area of triangle ΔBCE = 60 cm².
Learn more here:
https://brainly.com/question/23895501
What is 5 ÷ 1/5
I really need help with dividing whole numbers by fractions
Answer:
25
Step-by-step explanation:
When dividing by fractions, you can multiply by the opposite reciprocal.
5 ÷ 1/5
5 x 5/1
25
How many Term(s) is a monomial?
Answer:
Monomial is single termed.
Step-by-step explanation:
A single term is a monomial.
How many term(s) is a monomial?
Answer:-A monomial is single termed.
For examples:- x , y , p , etc.