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Explanation:
The event space is the set of outcomes we want to happen.
The event space is {5, 6, 7, 8, 9, 10, 11} which consists of getting a value greater than 4. There are 7 items in this event space. Let A = 7.
The sample space consists of all possible outcomes. The sample space is {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} and there are 11 items in the sample space. Let B = 11.
Divide the values of A and B to get the answer we're after
A/B = 7/11
This is the probability of selecting a value greater than 4.
1)
Which figures appear to be congruent?
[A] 2 and 3
[B] 1 and 4
।
[C] 2 and 5
[D] 1, 2, and 4
A
B
Answer:
answer c
Step-by-step explanation: since i helped can i have brainlist please :D
During lunch on Friday, 45 students in the 7th
grade chose pizza. This represented 25% of the
seventh-grade class. How many students are in the
entire 7th grade class?
Answer:
135
Step-by-step explanation:
You have $50 and a $15 gift card to spend online. You purchase a pair of headphones for $34.99 and 8 songs for x dollars each. Use an algebraic expression to find the amount you have left when each song costs $1.10.
Answer:
50 + 15 -34.99 - 8x
65 - 34.99 - 8(1.10)
30.01 - 8.8
$21.21
Step-by-step explanation:
The amount you have left when each song costs $1.10 is $21.21.
What is expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement.
Given:
You have $50 and a $15 gift card to spend online.
Cost of each sing = $1.10
You purchase a pair of headphones for $34.99 and 8 songs for x dollars each,
Calculate the total amount as shown below,
Total cost = cost of headphones + cost of each song × number of songs
Total cost = 34.99 + 1.10 × 8
Total cost = 34.99 + 8.8
Total cost = $43.79
Calculate the remaining cost as shown below,
Remaining cost = $50 + $15 - total cost
Remaining cost = $65 - $43.79
Remaining cost = $21.21
Therefore, the amount you have left when each song costs $1.10 is $21.21.
To know more about the expression:
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Help Please I need help
Answer:
Here's your answer
Step-by-step explanation:
The answer would be a square and a rectangle.
In a lab experiment, the decay of a radioactive isotope is being observed. At the beginning of the first day of the experiment the mass of the substance was 1000 grams and mass was decreasing by 14% per day. Determine the mass of the radioactive sample at the beginning of the 10th day of the experiment. Round to the nearest tenth (if necessary).
Answer:
120.91 grams
Step-by-step explanation:
multiply the initial amount by the percent that will remain to the power of n-1, n being the term number, or how many days that have passed.
f(x)=1000(0.85)^14-1
Can u show steps to solve
Kim has a bag with 4 blue marble, 4 black marble, 7 orange marbles, 2 red marbles, 6 yellow marbles, and 1 pink marble. If she chooses a marble twice at random and replaces the marble. P(blue and then black)?
A. 7 20/21
B. 3.75
C. 1/36
D. 2.57
E. 66
Answer:
Step-by-step explanation:
E
If -xy – 5+ y^2+ x^2= 0 and it is known that dy/dx= y-2x/-x+2y, find all
coordinate points on the curve where x = -1 and the line tangent to the
curve is horizontal, or state that no such points exist.
Answer:
There is no point of the form (-1, y) on the curve where the tangent is horizontal
Step-by-step explanation:
Notice that when x = - 1. then dy/dx becomes:
dy/dx= (y+2) / (2y+1)
therefore, to request that the tangent is horizontal we ask for the y values that make dy/dx equal to ZERO:
0 = ( y + 2) / (2 y + 1)
And we obtain y = -2 as the answer.
But if we try the point (-1, -2) in the original equation, we find that it DOESN'T belong to the curve because it doesn't satisfy the equation as shown below:
(-1)^2 + (-2)^2 - (-1)*(-2) - 5 = 1 + 4 + 2 - 5 = 2 (instead of zero)
Then, we conclude that there is no horizontal tangent to the curve for x = -1.
When a number is subtracted from 25, the difference is 8 less than twice
that number. What is the number?
Answer:
11
Step-by-step explanation:
first, we would set up an equation. since they say that a number is subtracted from 25, let x represent that number and say 25-x. on the other side of the equation, since it says the difference would be 8 less than twice that number, we would say 2x-8 because twice x would be 2x and we'd subtract 8 from that.
the equation would look like this:
25-x=2x-8
next, we would solve. first get the x to one side of the equation:
25=3x-8
then, get the 3x by itself:
33=3x
finally, solve for x by dividing both sides of the equation by 3:
11=x
x=11.
The number is 11.
At Pizza Pi, 52% of the pizzas made last week had extra cheese. If 13 pizzas had extra cheese, how many pizzas in all were made last week?
There were _______ pizzas made last week.
Answer:
Im trying to find it too :(
Step-by-step explanation:
Need help urgently extra points and mark brainlist
Answer:
-5 or 5 i think
Step-by-step explanation:
Answer:
D. btw plzzzzz give me brainliest
In ΔKLM, k = 890 inches, ∠M=143° and ∠K=34°. Find the length of m, to the nearest 10th of an inch.
Answer: 957.8
Step-by-step explanation:
Really expense 22.00 sales tax on 2 jerseys and three pairs of socks and jerseys or cost 6.75 each and the total sales tax was $1.03 in three cents fill in the table with the correct prices
Answer:
Step-by-step explanation:
eally expense 22.00 sales tax on 2 jerseys and three pairs of socks and jerseys or cost 6.75 each and the total sales tax was $1.03 in three cents fill in the table with the correct prices
1)The average teacher's salary in a certain state is $37,764. Assume a normal distribution with a standard deviation of $5100. Assume that the sample is taken from a large population and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator and round the answers at least four decimal places.
(a) What is the probability that a randomly selected teacher's salary is greater than $42,000?
p (X > 42,000)=?
(b) For a sample of 75 teachers, what is the probability that the sample mean is greater than $39,500?
P (ꭓ > 39,500)=?
Answer:
A. 0.2033
B. 0.0016
Step-by-step explanation:
please help me ill mark brainliest
Answer:
A) 50
Step-by-step explanation:
X = 5
15 * 5 + 75 = 150
150 / 3 = 50
y = 50
Pls help urgently extra points and mark brainlist easy reading
Answer:
the act of pointing out faults
Step-by-step explanation:
Answer: The answer is A the act of pointing out faults because it talks about how Anna was Criticism of how the or the author on skate
Step-by-step explanation:
5*10^9 divided by 5*10^4
Answer:
100000
Step-by-step explanation:
5 * 10^9 = 5000000000
5 * 10^4 = 50000
5000000000 / 50000 = 100000
Hope this helps!
Complete the table below for the function y= 3x
Answer:
the first one equals 3 the second one is 6 and the third one is 9
Step-by-step explanation:
Answer:
:D
Step-by-step explanation:
thx i needed this answer
Test - Par Parallel Lines & Transversals
Answer:
N central and Malzahn St are parrallel while the transversal is Brockway Rd
Step-by-step explanation:
Im not a nerd.
2) y = 3.x – 5; Find y if x = 8
Answer:
y=19
Step-by-step explanation:
y=3(8)-5
y=19
Answer:
Y=19
Step-by-step explanation:
So step one, fill in x and multiply
y=24-5
subtract
y=19
Write an equivalent expression to show the relationship of multiplication and addition 6 + 6 + 6
Answer:
6^3
Step-by-step explanation:
A teacher uses $40.00 to pay for s students to ride the bus and receives $1.60 in change. If it cost $1.20 for each student to ride the bus, which statement is true?
Answer:
She helped 32 students
Step-by-step explanation:
1.20s+1.60=40
Help? Please even 100 Point split
Answer: [tex]m - 5.25 = 4.75[/tex]
Step-by-step explanation:
We know Austin and his family go to the Carver Country Fair each year.
We also know Austin spends $5.25 trying to win a giant snake plushie.
He won the plushie, so we deduct $5.25. Our current equation is [tex]m - 5.25[/tex].
After spending $5.25 on a plushie, Austin still has 4.75.
We will now have our equation as [tex]m - 5.25 = 4.75[/tex]
The answer is Option B.
Answer:
[tex]\Large \boxed{\sf m-5.25=4.75}[/tex]
Step-by-step explanation:
Money received from Austin's dad - Money spent in Ring Toss = Money left after win at Ring Toss
Let 'Money received from Austin's dad' be m
please help me with this will give thanks and brainliest.
Answer:
1.394x10^-9
move the decimal point 9 to the left.
0.000000001394
What’s the equation in point slope form of the line that passes through the point (-1,1) and has a slope of 4 ?
9514 1404 393
Answer:
y -1 = 4(x +1)
Step-by-step explanation:
The point-slope form of the equation of a line with slope m through point (h, k) is ...
y -k = m(x -h)
For m=4 and (h, k) =(-1, 1), the equation is ...
y -1 = 4(x +1)
Substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce what equation?substituting the equation x equals 2y + 3 into the equation y equals negative 3x - 4 will produce what equation
Substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce the equation y = -3(2y + 3) - 4
What are linear equations?Linear equations are equations that have constant average rates of change, slope or gradient
How to determine the solution to the system?A system of linear equations is a collection of at least two linear equations.
In this case, the system of equations is given as
x = 2y + 3
y = -3x - 4
Considering the first equation
x = 2y + 3
Considering the second equation
y = -3x - 4
Substitute the first equation in the second equation
y = -3(2y + 3) - 4
Hence, substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce the equation y = -3(2y + 3) - 4
Read more about system of linear equations at
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Which expression is equivalent to 5(x + 7)?
Click on the point that best represents the location of −√5 on the number line.
Answer:
The dot all the way on the left. The one between 2 and 3 I believe.
Step-by-step explanation:
Answer:
The dot all the way to the left on the negative side.
Step-by-step explanation:
to decrease an amount by 28% , multiply by ????
Assuming that the heights of college women are normally distributed with mean 65 inches and standard deviation 3.5 inches, what percentage of women are shorter than 68.5 inches
Answer: the percentage of women that are shorter than 68.5 inches is 84.1%
Step-by-step explanation:
Given that;
mean μ = 65
standard deviation σ = 3.5
percentage of women are shorter than 68.5 inches = ?
P( x < 68.5 ) = P(( x-μ)/σ)
we substitute
⇒ ( 68.5-65)/3.5)
⇒ P(z < 1)
form standard normal table
P( x < 68.5 ) = P(z < 1) = 0.84134 ≈ 84.1%
Therefore, the percentage of women that are shorter than 68.5 inches is 84.1%