Answer: 4
Step-by-step explanation:
Answer:
If Pam surveys 12 more students, than four of them should she expect to pick English their favorite, based on past data.
Step-by-step explanation:
ProbabilityProbability means possibility of occurrence. It is a branch of mathematics which deals with the occurrence of particular event out of some random events.
Out of 18 students 6 have English as their favorite
Therefore the possibility expected is [tex]\frac{6}{18}[/tex] = [tex]\frac{1}{3}[/tex]
which mean out of 3 student one will choose English as favorite.
Thus if Pam surveys 12 more students then 12/3 = 4 .
Thus Four of them should expect to pick English their favorite, based on past data.
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math math math math 4 you (it's easy)
Answer:
The formula used here would be V = 4/3 πr³
Step-by-step explanation:
2r=d
r=12/2
r=6 V=4
4/3 π r3 =4
4/3·π·6(cube)≈904.77868can be written as 905
Abdullah is kicking a soccer ball into the air. The path of the soccer ball can be modeled by a quadratic equation where the point (6, 12) represents the vertex and the x-axis represents the ground. Which equation could represent the location of the soccer ball when it hits the ground? A 0=−(x−6)2+12 B 0=−(x+6)2−12 C 0=−(x−6)(x−12) D 0=−(x+6)(x+12)
9514 1404 393
Answer:
A. 0 = −(x−6)^2+12
Step-by-step explanation:
The vertex form of a quadratic equation is ...
y = a(x -h)² +k . . . . . . for vertex (h, k) and scale factor 'a'
When the given vertex (h, k) = (6, 12) is used, we find the form of the equation to be ...
y = a(x -6)² +12
The ball will be on the ground when y = 0. Here, the vertical scale factor 'a' is -1, so the equation representing the ball being on the ground is ...
0 = -(x -6)² +12 . . . . . . matches choice A
Find the area of the trapezoid 6.5 cm 9 cm 18.5 cm
Answer:
if the 'a base' is 6.5 & the height is 9 & 'b base' is 18.5, the answer is a = 112.5 cm^3
How many quadrilaterals can I construct with four right angles
Answer:2
Step-by-step explanation:
The net below depicts a triangular prism. What is the total surface area of the prism?
Please no links!!!
Answer:
c
Step-by-step explanation:
Answer:
312
Step-by-step explanation:
plz i beg wont thy help me with three questions T^T
k12 7th math
plz answer them all i really need it cause i cant figure it out T^T
Answer:
For each table plug x in one at a time into the equation
If the outcome (y) is the same in the table that will be the correct answers
Step-by-step explanation:
For example -2 will be plugged in so y=5/4(-2)-3 which simplifies down to -0.5 looking back at the table we see the y value is 0.5 instead of -0.5 thus allowing us to eliminate that answer choice and repeat the process in the next table. Whichever one holds true and have the correct outcome will be the correct answer
Hope this helps
Please i need help ASAP please no links.
A chord is units from the center of a circle. The radius of the circle is units. What is the length of the chord?
Answer:PLZ MARK BRAINLIST
Draw a line from the center of the circle to the chord to form a right triangle.
The radius (20) forms the hypotenuse of the right triangle and distance from the center to the chord (16) forms a leg.
Use the Pythagorean Theorem to find the length of the other leg x (which would be 1/2 the length of the chord):
x^2 + 16^2 = 20^
x = 12
So the entire chord length = 12 * 2 = 24 units
Solve the system by elimination.
-4x - 4y = 0
4x + 4y = 0
[tex]\begin{bmatrix}4x+4y=0\\ -4x-4y=0\end{bmatrix}[/tex]
Subtract 4y from both sides.
[tex]4x+4y-4y=0-4y[/tex]
Simplify
[tex]4x=-4y[/tex]
Divide each side by 4
[tex]\frac{4x}{4}=\frac{-4y}{4}[/tex]
Simplify
[tex]x= -y[/tex]
Substitute x as -y.
[tex]\begin{bmatrix}-4\left(-y\right)-4y=0\end{bmatrix}[/tex]
[tex]0=0[/tex]
The values of x and y are both zero.
What is the slope of the line?
2 + 2 =
very easy beainliest :)
Answer:
4
Step-by-step explanation:
1+1+1+1=4
Answer:
wow, hardest question I've ever answered! It's either 4 or 22, I can't decide
Step-by-step explanation:
If two similar rectangles have corresponding sides with a ratio of 2:3 what is the ratio of their areas?
Answer:
1 : 6
Step-by-step explanation:
let's say you have a rectangle that is 2 x 3 and another that is 4 x 9
their sides have a ratio of 2:3 but their areas are 6 and 36 so the ratio of their areas is 1 :6
Trains AB and passed through a station at different speeds Train speed times Train Bs speed, and Train Cs speed was twice Train A'sWhat was Train Cs spagd, in miles per hour Train B speed was 7 miles per hour?
Answer:
21
Step-by-step explanation:
7*2=14 14+7=21 jfhdjdndndndhd
The team's win-loss ratio was 5 to 3. If the team played
120 games without a tie, how many games did the team win?
Answer:
75 games
Step-by-step explanation:
5 : 3 =8
8 = 120 games
1= 120÷8
=15
Games the team win:
= 5×15
= 75 games
If team's win-loss ratio was 5 to 3. If the team played 120 games without a tie then 75 games are win by team.
What is Ratio?A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.
Given,
The team's win-loss ratio was 5 to 3.
The team played 120 games without a tie.
We need to find how many games did the team win
5x+3x =8x
8x = 120 games
Divide both sides by 8
x= 120/8
x=15
Games the team win:
= 5×15
= 75 games
Hence, 75 games did the team win.
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The area of the largest cross section of a sphere and the circumference of the sphere are in the ratio 4:1.
The radius of the sphere is ___cm. The circumference of the sphere is about ___cm. The area of the largest cross section is about____ cm. The volume of the sphere is about ___cm
Answer:
[tex](a)\ r = 8cm[/tex]
[tex](b\ Area = 200.96cm^2[/tex]
[tex](c)\ Volume = 2143.573cm^3[/tex]
Step-by-step explanation:
The largest cross-section of a sphere is the center.
So, we have:
[tex]A : C = 4 : 1[/tex]
Where
[tex]A = \pi r^2[/tex]
[tex]C =2\pi r[/tex]
Solving (a): The radius
[tex]A : C = 4 : 1[/tex] implies that
[tex]\pi r^2 : 2\pi r = 4 : 1[/tex]
Express as fraction
[tex]\frac{\pi r^2 }{ 2\pi r} = \frac{4 }{ 1}[/tex]
[tex]\frac{\pi r^2 }{ 2\pi r} = 4[/tex]
Divide by [tex]\pi r[/tex]
[tex]\frac{r}{ 2} = 4[/tex]
Make r the subject
[tex]r = 4 * 2[/tex]
[tex]r = 8cm[/tex]
Solving (b): Area of the largest cross-section.
[tex]Area = \pi r^2[/tex]
[tex]Area = 3.14 *8^2[/tex]
[tex]Area = 200.96cm^2[/tex]
Solving (b): Volume of the sphere
[tex]Volume =\frac{4}{3}\pi r^3[/tex]
[tex]Volume =\frac{4}{3} * 3.14 * 8^3[/tex]
[tex]Volume = 2143.573cm^3[/tex]
30 Points please help.
Which points are on the graph of y=tanx? select all that apply
(there are two correct answers)
===================================================
Explanation:
θ = greek letter theta = reference angle
Using the unit circle, you should find that when θ is pi/3, we have
cos(θ) = cos(pi/3) = 1/2sin(θ) = sin(pi/3) = sqrt(3)/2Dividing sine over cosine gets us tangent
tan(θ) = sin(θ)/cos(θ) = sqrt(3)/2 divide over (1/2) = sqrt(3)
Effectively, the denominators '2' cancel out when dividing the two fractions. The result we get here is not sqrt(3)/2, so we can rule out choice A.
---------------
Choice B can be ruled out because
cos(0) = 1
sin(0) = 0
So,
tan(0) = sin(0)/cos(0) = 0/1 = 0
which doesn't match with y = pi
----------------
Following the same ideas as mentioned before:
cos(pi/4) = sqrt(2)/2
sin(pi/4) = sqrt(2)/2 ... it's not a typo, sine and cosine are the same here
tan(pi/4) = 1 after dividing the two items above
We end up with y = 1 as the screenshot shows, so (pi/4, 1) is one point on the graph of y = tan(x).
Choice C is one of the answers
----------------
Choice D however is not one of the answers because
sin(pi/2) = 1
cos(pi/2) = 0
tan(pi/2) = undefined, because the denominator cosine is 0 in this case
So there's a vertical asymptote at x = pi/2 for y = tan(x)
-----------------
Choice E is another answer, because,
sin(pi) = 0
cos(pi) = -1
tan(pi) = sin(pi)/cos(pi) = 0/(-1) = 0
This shows (pi, 0) is a point on y = tan(x).
The graph is shown below. Points C and E are on the blue tangent curve, while everything else isn't.
I used GeoGebra to create the graph. Desmos is also a handy tool that can perform similar tasks.
WILL
GIVE BRAINLIST
ANSWER
MATH
who was the artist that cut off his ear?
Answer:
Vincent Van Gogh
Step-by-step explanation:
He was the artist who cut off his ear in 1888 in December I think...
I hope this helped :))
In a classroom,1/6,of the students are wearing blue shirts,and 2/3 are wearing white shirts. There are 12 students in the classroom,ow many students are wearing shirts other than blue shirts or white shirts?
Answer:
2
Step-by-step explanation:
1/6 x 12 = 2
2/3 x 12 = 8
8 + 2 = 10
12 - 10 = 2
Answer:
2 not wearing either blue or white
Step-by-step explanation:
Find out the fraction that represents those that are wearing either blue or white. Let x be that fraction
x = 2/3 + 1/6
Change 2/3 and 1/6 to 12ths. because there are 12 students in the class.
2/3 = 2*4 / (4 *O 4) = 8/12
1/6 = 2*1/(2 * 6) = 2 / 12
x = 8/12 + 2/12
x = 10/12 Normally you would reduce this fraction because we are not using the Lowest common Denominator. In this case we just leave it.
There are 12/12 - 10/12 = 2/12 that are missing.
So 2 people are Not wearing either blue or white.
Sam left a 15% tip on his bill at the restaurant. If the bill was $24, what was the tip?
Does anyone know how to do probability good?
Answer:
Yes, I can help you for free if you help me on some of my questions
Step-by-step explanation:
What is 1.05 x 10^8 written in standard notation?
Answer:
105000000
Step-by-step explanation:
Since the exponent of the scientific notation is positive, move the decimal point 8 places to the right.
After writing the expression in standard form we get 105000000
What are exponents ?
An exponent is a number or letter written above and to the right of a mathematical expression called the base. It indicates that the base is to be raised to a certain power.
The given question is 1.05 * 10⁸
It has to be written in the standard format
The exponent 8 on 10 means base 10 is multiplied 8 times.
therefore
1.05 * 10*10*10*10*10*10*10*10
On solving this we get
105000000 is what we get after writing the expression in standard form.
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I need help on 5-7. Its a little confusing for me
Answer:
5. x = 5, y = 3
6. x = 0, y = 4
7. x = -1, y = 1
Step-by-step explanation:
5. substitute 3(value of y) into the equation y = x - 2:
=> 3 = x - 2
=> x = 5
6. substitute 0(value of x) into the equation y = x + 4:
=> y = 0 + 4
=> y = 4
7. substitute 1(value of y) into the equation y = 2x + 3:
=> 1 = 2x + 3
=> 2x = -2
=> x = -1
I need a little help. (The question is on the screenshot by the way)
Answer:
45
Step-by-step explanation:
the answer iud D
Answer:
[tex] \boxed{8} < \sqrt{80} < \boxed{9}[/tex]
Step-by-step explanation:
[tex]\sqrt{80} =8.94427191[/tex]
Since, 8.94427191 falls between 8 and 9.
[tex] \therefore \: \boxed{8} < \sqrt{80} < \boxed{9}[/tex]
Using the diagram below l, if angle P is 78 degrees and arc CB is 46, find arc AC
Answer:
arc AC = 202°
Step-by-step explanation:
Based on the tangent-angle secant rule, the angle formed outside a circle by a secant and a tangent is equal to one-half the difference between the far arc and the near arc.
Thus:
m<P = ½(arc AC - arc CB)
Substitute
78° = ½(arc AC - 46°)
Multiply both sides by 2
2*78 = arc AC - 46
156 = arc AC - 46
Add 46 to both sides
156 + 46 = arc AC
202° = arc AC
arc AC = 202°
Collette wanted to know if there was a difference in favorite food types among students at her large high school. She took a random sample of students from her school and asked them to name their favorite food type. Of those surveyed, 29 preferred American, 16 preferred Chinese, 19 preferred Mexican, and 28 preferred Italian. Which of the following is the chi-square test statistic?
a. (29 - 23)2/23 + (16 - 23)2/23 + (19 - 23)2/23 + (28-23)2/23.
b. (29 - 23)2/23 - (16 - 23)2/23 - (19 - 23)2/23 - (28 - 23)2/23.
c. (29 + 23)2/23 + (16 + 23)2/23 + (19 + 23)2/23 + (28+23)2/23.
d. (29 - 23)2/92 + (16 - 23)2/92 + (19 - 23)2/92 (28-23)2/92.
e. (29 + 23)2/92 + (16 + 23)2/92 + (19 - 23)2/92 + (28-23)2/92.
Answer:
(29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23
Step-by-step explanation:
Given :
n(American) = 29
n(Chinese) = 16
n(Mexican) = 19
n(Italian) = 28
Expected value = (29 + 16 + 19 + 28) / 4
Where, 4 = sample size
Expected value, E = 23
χ² = (Observed value - Expected value)² / expected value
χ² = (29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23
Answer:
(29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23
Step-by-step explanation:
I would but you probobly want just the answer :/
Jonathan has a cylindrical fish tank that is one foot tall. The diameter of
the fish tank is 10 inches. How much glass did it take to make the tank?
Answer:
942 in^3
Step-by-step explanation:
We are to calculate the volume of the cylinder
volume of a cylinder = nr^2h
n = 22/7
r = radius = 10/2 = 5
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
height = 1 foot = 12 inches
3.14 x 5^2 x 12 = 942
The sequence of the differences, 2, 4, 8, 16, 32, … is a geometric sequence with:
a1 =
and r1 =
*Please Help**
Answer:
r1 is given by the formula an=a1r.n-1
Step-by-step explanation:
Answer:
a1 = 2
r1 = 2
yayyyyyyyyyyyyyyyyyyyyyyyyy
What is 2.6 * 10 ^ 5 written in standard notation? A. 26, 000 O B. 2, 060, 000 O C. 20,600 O D. 260, 000 O E. 2, 600, 000 O F. 206, 000
Answer:260000
Step-by-step explanation:
Hey can anyone suggest me some good hindi romantic songs? I just wanna try......
Answer:
Try RAB NE BANA DI JODI ( A MATCH MADE BY GOD)
Music is good. lyrics too.
Step-by-step explanation:
What is the median of:
2, 8, 7, 8, 6, 15, 6, 8, 3
Answer:
7
Step-by-step explanation:
To find the median, put all numbers into ascending order and work into the middle by crossing off numbers at each end. If there are a lot of items of data, add 1 to the number of items of data and then divide by 2 to find which item of data will be the median.
Answer: 7
Step-by-step explanation:
1. put them in order from least to greatest = 2, 3, 6, 6, 7, 8, 8, 8, 15
2. find the number in the middle = 7
Hope I helped, have an amazing day!!