Answer:
Tasha's weekly earnings
Step-by-step explanation:
I just took the pre-test
(sorry if I'm a little late)
Answer:
tasha's weekly earnings
If an hourglass takes an average of 1 hour to empty a full cycle, what probability of time does it take longer than 72 minutes if the standard deviation is 5 minutes? (Make sure to use a percentage!)
Answer:
0.82%
Step-by-step explanation:
First find the z-score.
z = (x − μ) / σ
z = (72 − 60) / 5
z = 2.4
Use a chart or calculator to find the probability.
P(Z > 2.4) = 1 − P(Z < 2.4)
P(Z > 2.4) = 1 − 0.9918
P(Z > 2.4) = 0.0082
Hence, the probability of time does it take longer than [tex]72[/tex] minutes if the standard deviation is [tex]5[/tex] minutes is [tex]0.82[/tex]%.
What is the probability?
Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
Here given that,
If an hourglass takes an average of one hour to empty a full cycle.
Now, First find the z-score.
[tex]z = (x-[/tex] μ[tex])[/tex]/σ
[tex]z = \frac{72 - 60}{5}\\z = 2.4[/tex]
Now, using the calculator to find out the probability.
[tex]P(Z > 2.4) = 1 - P(Z < 2.4)\\\\P(Z > 2.4) = 1 - 0.9918\\\\P(Z > 2.4) = 0.0082[/tex]
Thus,
[tex]0.0082(100)=0.82[/tex]%
Hence, the probability of time does it take longer than [tex]72[/tex] minutes if the standard deviation is [tex]5[/tex] minutes is [tex]0.82[/tex]%.
To know more about the probability
https://brainly.com/question/12629667
#SPJ2
Which staternent is about the polynomial 3x ^ 2 * y ^ 2 - 5x * y ^ 2 - 3x ^ 2 * y ^ 2 + 2x ^ 2 after it has been fully simplified has 2 terms and a degree of 2 It has 2 terms and a degree of 3 . }has 4 terms and a degree of 2 . It has 4 terms and a degree of 4.
Answer:
The polynomial has 2 terms and a degree of 3.
Step-by-step explanation:
The given polynomial is [tex]3x^2y^2-5xy^2-3x^2y^2+2x^2[/tex].
On simplification, the polynomial becomes:
[tex]-5xy^2+2x^2[/tex]
Numbers of term=2
Degree=1+2=3
Hence, the polynomial has 2 terms and a degree of 3.
SHOW ALL WORK!!!
1.
Find the distance between (-4,-2) & (4,4)
Answer:
Step-by-step explanation:
Use the image below to answer the following question.
An image shows a diver crouching on a diving board labeled 1. The diver launching off the board is labeled 2. The diver just about to enter the water is labeled 3 The diver in the water feet above water is labeled 4.
At which position does the diver have the most gravitational potential energy?
Answer:
its a
Step-by-step explanation:
because iti s
A certain standardized test measures students’ knowledge in math and English. The scatterplot displays the scores for 10 randomly selected students.
The equation y = 54.16 + 0.87x is called the least-squares regression line because it:
is least able to make accurate predictions for the data.
makes the sum of the squared residuals as large as possible.
makes the sum of the squared residuals as small as possible.
causes the relationship between English scores and math scores to be strongest.
Answer:
it's C
Step-by-step explanation:
The correct answer is: The equation y = 54.16 + 0.87x is called the least-squares regression line because it makes the sum of the squared residuals as small as possible.
The least-squares regression line is a line that best fits the given data points by minimizing the sum of the squared residuals. Residuals are the vertical distances between the actual data points and the predicted values on the regression line. By minimizing the sum of the squared residuals, the line is able to provide the best overall fit to the data.
Therefore, the least-squares regression line aims to minimize the differences between the predicted values and the actual data points, making the sum of the squared residuals as small as possible.
Learn more about least-squares regression line here
https://brainly.com/question/17731558
#SPJ2
GIVING BRAINLIEST ASAP - explain why 1 plus 1 equals 2
Put a finger up. You have 1. Add 1 another finger by putting another finger up. If you count how many there are you get 2.
So 1+1 = 2.
Seriously though... why ask this.
need help please answer due tonight
Answer: I think 9
Step-by-step explanation:
The price of gas rose from $2.40 per gallon in january to $3.00 per gallon in April. What was the percent increase based on the original price?
A: 20%
B: 25%
C: 60%
D: 80%
Answer:
60%
Step-by-step explanation:
Answer:
C. 60%
Step-by-step explanation:
Multiply. 17.2 x 3.6
Answer:
61.92
Step-by-step explanation:
i just used a calculator
A number t times 6.
Answer:
6t
Step-by-step explanation:
t times 6 = t*6, which can be written as 6t (usually numbers go before the variables)
Simplify the expression (7a5b6)4 .
Answer:
28a20b24
Step-by-step explanation:
(7a5b6)4
= (7a*4)(5b*4)(6*4)
= 28a20b24
2x-3=3x+2 what is the answer
Answer:
x= -5
Step-by-step explanation:
First I took -2x out of -2x and -3x. Then I minused 2 from 2 and minused 2 from -3, which left me with -5=1x. I divided it out and got -5. Hope this helped!
Drag each equation to the correct location on the table.
Which equations have one solution and which have infinitely many solutions?
Answer: The 1st one is 1 soultion the 2nd one is 1 soultion the 3rd one is multiple soultion and the last one is multiple solution
Step-by-step explanation: hope I am right?
1=one 2=multiple 3=one 4=multiple
Solve for x, Solve for z, and Solve for y
Answer:
x=38 degrees, y=41 degrees, z=97 degrees
Step-by-step explanation:
The Triangle Angle-Sum Theorem states that all interior angles of a triangle will add up to 180 degrees.
Look at the triangle to the right. The missing value of x will complete the theorem, therefore the equation 59+83+x=180 will find x. x=38 when we solve the equation.
The triangle on the left has two missing variables, but since angles z and 83 degrees are supplementary to each other, we can make another equation z+83=180 since supplementary angles add up to 180 degrees. z=97 when we solve the equation.
Since we have z, we can now find the value of y given the Triangle Angle-Sum Theorem. The equation would be 42+97+y=180 so we can solve for y. y=41 when we solve the equation.
Answer:
x=38
z=97
y=41
Step-by-step explanation:
There are liquids of different densities together in a container. What will happen to the liquid with the lowest density?
It will move to the bottom.
O It will move to the top.
It will bubble out as a gas.
O It will form a solid.
2. The school auditorium holds 9216 people. The auditorium was full for all 4 performances
of the school play, How many people came to see the school play?
A group of 5 people planned to spend $12 each to rent power tools to build playground equipment for a day camp. At the last minute, 1 person
could not participate. If the others then paid equally for the tools, how much did each pay?
Answer:
The answer would be 48 since it would be 4 x 12
Answer:
$15
Step-by-step explanation:
If the 5 people where each paying $12 to rent the equipment, that means the cost of the equipment can be found multiplying 5 and 12 to get 60. Now that we know that the cost of the equipment is $60, if one person bailed out, there are now 4 people to rent it. You can find how much each person pays if they each pay the same amount by dividing 60 by 4. Once you do $60 ÷ 4 people = 15. So each person pays $15.
I hope this helps :)
For the function, f(x) = −x2, find f(-3)
Find the value of [tex]\sqrt[4](16)^{-2}[/tex]
Will mark as brainliest to the best answer!!!
Given parameters:
Evaluate;
[tex]\sqrt[4]{(16)^{-2} }[/tex]
Now let us solve this;
[tex]\sqrt[4]{(16)^{-2} }[/tex];
the fourth root can be expressed as the power of [tex]\frac{1}{4}[/tex] ;
[tex]\sqrt[4]{(16)^{-2} }[/tex] = [(16)⁻²][tex]^{\frac{1}{4} }[/tex]
= (16)[tex]^{-2 x \frac{1}{4} }[/tex]
= (16)[tex]^{\frac{-1}{2} }[/tex]
= [tex]\frac{1}{16^{\frac{1}{2} } }[/tex]
= [tex]\frac{1}{\sqrt{16} }[/tex]
= [tex]\frac{1}{4}[/tex]
The solution is [tex]\frac{1}{4}[/tex]
I NEED HELP WITH THIS PLS Q1
Answer:
B. 80, -160
Step-by-step explanation:
The common ratio between these three numbers is -2.
-10 * -2 = 20
20 * - 2 = -40
-40 * -2 = 80
80 * -2 = -160
which of the following is the equation of a line given the following
slope:5 and y-intercept: -3
a. y = -3x - 5
b. y = 5 + 3x
c. y = 5x - 3
d. y = -3x + 5
Answer:
C.
Step-by-step explanation:
Slope-intercept form is described as y=mx+b, where m = the slope, and b = the y-intercept. Since you are given these two numbers, just plug them into the slope-intercept form. This gives you y=5x-3.
Lisa finds a treasure chest full of 1000 jewels: 600 emeralds, 300 sapphires, and 100 rubies. She stuffs her pockets full of jewels completely at random, but they can only hold 100 jewels. What is the probability that all 100 jewels she took were sapphires?
Given:
Total number of jewels = 1000
Emeralds = 600
Sapphires = 300
Rubies = 100 rubies
100 jewels she took randomly.
To find:
The probability that all 100 jewels she took were sapphires.
Solution:
Number of selected jewels = 100
Total number of jewels = 1000
We have to select 100 out of 1000.
So, the total number of outcomes [tex]=^{1000}C_{100}[/tex]
Number of sapphires = 300
We have to select 100 out of 300 sapphires .
So, the favorable outcomes [tex]=^{300}C_{100}[/tex]
Now,
[tex]\text{Required probability}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}[/tex]
[tex]\text{Required probability}=\dfrac{^{300}C_{100}}{^{1000}C_{100}}[/tex]
Therefore, the required probability is [tex]\dfrac{^{300}C_{100}}{^{1000}C_{100}}[/tex].
I NEED HELP!!!!!!!!!!!!!!!!!!!4/7X+ 5/14X= 39
The solution is _____
Answer:
x=42
Your welcome!
Answer:
x=42
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
4/7*x+5/14*x-(39)=0
Simplify 5/14
((4/7• x) + (5/14 • x)) - 39 = 0
Simplify 4/7
4 5x
((— • x) + ——) - 39 = 0
7 14
Find the Least Common Multiple
The left denominator is : 7
The right denominator is : 14
Number of times each prime factor
appears in the factorization of:
Prime
Factor Left
Denominator Right
Denominator L.C.M = Max
{Left,Right}
7 1 1 1
2 0 1 1
Product of all
Prime Factors 7 14 14
Least Common Multiple:
14
Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Left_M = L.C.M / L_Deno = 2
Right_M = L.C.M / R_Deno = 1
Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Rewrite the two fractions into equivalent fractions
Two fractions are called equivalent if they have the same numeric value.
For example : 1/2 and 2/4 are equivalent, y/(y+1)2 and (y2+y)/(y+1)3 are equivalent as well.
To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.
L. Mult. • L. Num. 4x • 2
—————————————————— = ——————
L.C.M 14
R. Mult. • R. Num. 5x
—————————————————— = ——
L.C.M 14
Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
4x • 2 + 5x 13x
——————————— = ———
14 14
13x
——— - 39 = 0
14
Subtracting a whole from a fraction
Rewrite the whole as a fraction using 14 as the denominator :
39 39 • 14
39 = —— = ———————
1 14
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding up the two equivalent fractions
13x - (39 • 14) 13x - 546
——————————————— = —————————
14 14
Pull out like factors :
13x - 546 = 13 • (x - 42)
13 • (x - 42)
————————————— = 0
14
When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
13•(x-42)
————————— • 14 = 0 • 14
14
Now, on the left hand side, the 14 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
13 • (x-42) = 0
Solve : 13 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solve : x-42 = 0
Add 42 to both sides of the equation :
x = 42
Please Give me Brainliest
Use the diagram of the pyramid to answer the question. Which is the surface area of the pyramid?
Graph on the number line x >-3
^
| there’s a line under the <
graph on the number line
x < -1
there’s a line under the <
Answer:
x>-3 means that x is anywhere from -2 to any positive number... I don't know if this helps at all but it's what I got from the question ask! <3
Step-by-step explanation:
3x +y = 9.x, solve for x
Answer:
3-y=x
Step-by-step explanation:
Select the property that allows the statement 10 = y to be written y = 10.
Answer:
The commutative property :))
The cost of a flight on jetBlue is $1,000. The prices are predicted to be marked up to $1,350tomorrow. Whatpercent is the price of the ticket expected to increase?
Answer:
35%
Step-by-step explanation:
1,000 + 35% = 1,350
Write the equation of a line in the point-slope form with a slope of 2 and passes through the point (-5,2)
Answer:
y - 2 = 2(x + 5)
Step-by-step explanation:
Use the point slope form: y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.
Plug in the point and slope:
y - y1 = m(x - x1)
y - 2 = 2(x + 5) is the equation
The set of letters in the word statistics
Answer:
s, t, a, t, i, s, t, i, c, s
Step-by-step explanation:
