Answer:
Step-by-step explanation:
86-51.5= 34.5
Leanne is picking out some movies to rent, and she is primarily interested in children's movies and comedies. She has narrowed down her selections to 18 children's movies and 7 comedies. Step 2 of 2 : How many different combinations of 3 movies can she rent if she wants at least one comedy
Answer:
If she wants at least one comedy, there are 1484 different combinations.
Step-by-step explanation:
The order in which she wants to pick the movies is not important. So, we use the combinations formula to solve this question.
Combinations formula:
[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
In this question:
She wants combinations of 3 movies, with at least one comedy. The easiest way to find this is finding the total number of combinations of 3 movies, from the set of 25(18 children's and 7 comedies), and subtract by the total number without comedies(which is 3 from a set of 25). So
Total:
3 from a set of 25.
[tex]C_{25,3} = \frac{25!}{3!(25-3)!} = 2300[/tex]
Without comedies:
3 from a set of 18.
[tex]C_{18,3} = \frac{18!}{3!(18-3)!} = 816[/tex]
At least one comedy:
[tex]2300 - 816 = 1484[/tex]
If she wants at least one comedy, there are 1484 different combinations.
6. A Civil War cannon is placed at the base of a hill. The cannon is fired at an angle toward the hill. The path of the cannon ball is parabolic and can be represented by y=-0.04x2 + 4x + 1, where y represents the height of the ball in meters and x represents the horizontal distance of the ball from the cannon. The incline of the hill can be represented by the equation y = 0.8125x. How far will the cannon ball have moved horizontally from the cannon when it hits the hill?
Answer: 80
Step-by-step explanation:
Following are the solution to the given question:
Its canon is placed on the floor, as we knew from the very first part. So, for Canon, [tex]y = 0[/tex]. Consider the origin, which is located at the bottom of a hill. So, to find the canon's x value, we must solve the quadratic formula: [tex]-0.04x^2 + 4x + 1 = 0[/tex] , which has only one negative solution,[tex]0.25.[/tex] We know that the x value cannot be positive as this would suggest that the cannon is located inside of the hill. This hill's equation is[tex]y = 0.8125x[/tex] , and we understand that now the cannonball will collide with it at the junction of the hill line and its hyperbolic path. So, when the formulas are combined, we get[tex]\to 0.8125x =-0.04x2 + 4x + 1\\\\\to 0.04x^2 - 3.1875 - 1 = 0\\\\[/tex]
It has the only positive root as [tex]80[/tex]. As a result, the y value is [tex]0.8125\times 80 = 65[/tex]The horizontal distance will be the x value + the [tex]0.25 = 80.25[/tex]Its horizontal distance = x value+[tex]0.25= 80+0.25 = 80.25[/tex]Learn more:
brainly.com/question/20975698
PLEASE ITS DUE TODAY. Which expression has a conffcient of 7?
Answer:
the first one
Step-by-step explanation:
because x has an coefficient
Answer: The answer is C
2). [ppspspsssllslslslslsllssl awwnnnssseeerr dddiiiiisssssss
Answer:
D
Step-by-step explanation:
Answer: I am pretty sure it is C.
Step-by-step explanation:
The model shows 2/3
Which one of the following correctly models and gives the quotient of 2/3 divided by 1/6?
Please help nagito out
Abc
Step-by-step explanation:
-2x-y-2z+4x-2y+3z
Please help
Answer:
2x-3y+z
Step-by-step explanation:
-2x-y-2z+4x-2y+3z
combine like terms
-2x+4x= 2x
-y-2y= -3y
-2z+3z= z
so..
2x-3y+z
50 POINTS
explain the meaning of the following points
(1,2)
(9,18)
Answer:
(1,2) 1 represents how many days and 2 represents how many mm tall
(9.18) 9 represents how many days and 18 represents how many mm tall
Step-by-step explanation:
Answer:
(1,2) in one day, the plant was 2 mm tall.
(9,18) in nine days, the plant was 18 mm tall.
Step-by-step explanation:
(1,2) in one day, the plant was 2 mm tall.
(9,18) in nine days, the plant was 18 mm tall.
If this helps please mark as brainliest
Two hours after leaving his home, Nolan traveled a distance of 120 miles. Distance in this scenario is represented by d and time is represented by t.. [2 points]Part A. Assuming that Nolan travels at the same speed during his trip, which of the following statements can be used to describe the distance Nolan may have traveled?
a.Nolan traveled 180 miles after 3 hours
.b.Nolan traveled 60 miles after 2 hours
.c.Nolan traveled 120 miles after 1 hour.
d. Nolan traveled 60 miles after 0 hours.
Part b
Part B. Write an equation that represents the distance traveled by the car for an amount of time. Then name the dependent variable
.a.d=120t, d is the dependent variable
b.d=60t, d is the dependent variable
c.d=120t, t is the dependent variable.
d=60t, t is the dependent variable
Answer:
Part A = A
Part B = C
Step-by-step explanation:
Ik I have Ms. Keten too :/Anyone got me with this I’ll cash app you
Answer:
0
Step-by-step explanation:
Since given line is parallel to x axis, so it's slope is zero.
Another way:
Line is passing through the points (2, - 1) & (3, - 1)
So,
[tex] slope=\frac{-1-(-1)}{3-2}[/tex]
[tex] slope=\frac{-1+1}{1}[/tex]
[tex] slope=\frac{0}{1}[/tex]
[tex] slope=0[/tex]
Please help me 15 points
Select the correct answer.
Which system of equations can be represented by this matrix?
Answer: C
Step-by-step explanation: As you most likely know, the matrix represents the system of equations. If you assume that x is the far left column, that y is the column adjacent to it, and that y is to the left of the line, you can assume that these are the equations represented:
1x-3y+2z=-9
1x+0y+1z=1
0x+2y-1z=7
which can be simplified to
x-3y+2x=-9
x+z=1
2y-z=7
What is the area of the figure?
20 m2
24 m2
32 m2
can't be determined
Hector makes a graph to show the height of a shot put after it is thrown.
Describe the behavior of the shot put based on the graph.
Please help!!
Answer: it’s at the middle
Step-by-step explanation:
how does 4/3y = 36??????????
Answer:
i think 27
Step-by-step explanation:
27 X 4/3y=36y
Answer:
When you find the y value and multiply it by 4/3, it equals 36.
Step-by-step explanation:
[tex] \frac{ \frac{4}{3}y }{ \frac{4}{3} } = \frac{ 36 }{ \frac{4}{3} } \\ y = 27[/tex]
[tex] \frac{4}{3} (27) = 36 \\ 36 = 36[/tex]
do you guys know how to post math pics
Answer:
Go To the link button when posting
Step-by-step explanation:
Answer:
hmmm well there is this paper clip thing at the bottem and I think you need to take a screen shot save it in a folder then press that paper clip thing at the bottem and BOOM
Step-by-step explanation:
Hope this helps :)
Cameron completed the following long division problem. Identify the error in his division.
A.
There is no error.
B.
He should have divided 288 by 4.
C.
He divided 28 by 4 to get 6 instead of 7.
D.
He should have added 8 and 8 and not subtracted them.
Answer:
c hope it helps
Step-by-step explanation:
You train for a race by running 6 miles on race day you run 3.2 miles in 30 minutes what is your speed in miles per hour
Answer:
0.533
Step-by-step explanation:
Answer
0.533
Plz mark me as a Brainliest.
I am in need
What is the common denominator of 3/4 and 2/6
Answer:
Step-by-step explanation:
The common denominator of
[tex]\frac{3}{4} and \frac{2}{6}[/tex]
is got by taking LCM of 4 and 6 which is 12
I am confused, can anybody help?
How does Einstein expect us to do math?
Answer:
aaa
Step-by-step explanation:
Which model is not a function?
Answer:
C
Step-by-step explanation:
A function can not have an input that has more than one output.
In the diagram the left is the input and the right is the output. C has the input 2 having an output of -2, -1, 0, 1, and 2. That is more than one.
Did I get this right or no I need help
Answer:
Correct
Step-by-step explanation:
You got the right equation
Answer:
a is correct answer yes these is answer
Solve the following problem:
Which triangles are similar? Which sides are proportional?
9514 1404 393
Answer:
ΔA₁CA ~ ΔBCB₁
Step-by-step explanation:
The triangles share angle C. The 30° angles are also congruent, so the triangles are similar by the AA theorem.
It is convenient to name the similar triangles by matching the similar angles. Here, angle A₁ matches the acute angle at B, and (of course) angle C matches itself. So, we can name the triangles using those two angles in that order.
ΔA₁CA ~ ΔBCB₁
5. For each quantity, decide whether circumference or area would be needed to calculate it. Explain or show your reasoning.
a. The distance around a circular track.
b. The total number of equally-sized tiles on a circular floor.
c. The amount of oil it takes to cover the bottom of a frying pan.
d. The distance your car will go with one turn of the wheels.
E. The amount of frosting on the top of a cookie.
F. The amount of tile needed to cover the bottom of a circular pool.
Answer:
c
Step-by-step explanation:
The relationship between altitude and the boiling point of a liquid is linear. At sea level, the liquid boils at 220°F. As the
altitude increases, the boiling temperature of the liquid decreases, such that at an altitude of 4,500 ft, the liquid boils at
211.45°F.
a. Write an equation giving the boiling point b of the liquid, in degrees Fahrenheit, in terms of altitude a, in feet.
b. What is the boiling point of the liquid at 22,000 ft?
Answer:
?????????????????????
Step-by-step explanation:
I need points sorry
Which expression is equivalent to
- 70/2
lolzzzzz
Answer:
-35
Step-by-step explanation:
hope this helps if not sorry
12q ≤41 plz help me or ill fail
Answer:
q ≤ 3.41
Step-by-step explanation:
Divide for the answer.
q ≤ 3.41
In a box-and-whisker plot, the "box" portion contains 50% of the data.
A. True
B. False
Answer: True
Step by step explanation
For a year, Charlie records the balance of his checking account at the
end of each month. His data can be represented by a linear model,
y = 213.73x + 75.62, where x is the number of months, and y is the
account balance.
Answer
so just add and you should get your
Step-by-step explanation:
add
What is 4/5 written as a percentage
Answer:
80%
Step-by-step explanation:
To write 4/5 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol %. 4/5 * 100 = 0.8 * 100 = 80% And finally we have: 4/5 as a percent equals 80%
Answer:
0.80
Step-by-step explanation:
1/5=0.20
1/5×4=0.80