Answer: 13
Step-by-step explanation:First, based on the data, find the probability of a water cooler being a student's first choice of additions to the lunchroom.
Robert has surveyed 10+7+4+5=26students.
7 of these students ranked a water cooler as their first choice.
So, the probability of a water cooler being a student's first choice of additions to the lunchroom is
7
26
.
You can estimate how many of the next 50 students surveyed will rank a water cooler as their first choice by assuming that
7
26
of the 50 students will do so. Find
7
26
of 50.
7
26
50=13.461…
Based on the data, about 13 students out of the next 50 surveyed will rank a water cooler as their first choice of additions to the lunchroom.
Anthony rides his bicycle at a speed of 5 km per hour how far will it travel If he rides for 6 hours
Answer:
30 km
Step-by-step explanation:
because 5km x 6hrs = 30 km sorry if i'm wrong that's just how my brain works.
Answer:
30
Step-by-step explanation:
5x6=30
it says 5 per hour so 5x6
What is the missing angle?
Check the picture below.
What is the value of the expression below? (9-3)+4(6-7) O-7 O-1 O7 20
Answer:20
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
PLEASE HELP! I WILL MAKE YOU BRAINLIST!
Answer:
D. is the answer
Step-by-step explanation:
1.5 × 8 = 12
Answer:
B
Step-by-step explanation:
first convert 12ft ti inch, i.e 1ft is 12in,
so 12ft is 144in, common ratio is 8, i.e 8in to 144in,
so, its 1in to 18in.
Connor is playing a card game called At Face Value. At the end of each round, players earn positive points for their remaining number cards but negative points for their face cards. At the end of round 1, Connor earns
–5 points. At the end of round 2, he earns –6 points. What is Connor's score now?
Adding the score of each round, Connor's current score is of -11 points.
How to find the sum of two negative numbers?To find the sum of two negative numbers, we keep the signal and add numbers.
For each round, Connor's scores are given as follows:
Round 1: -5 points.Round 2: -6 points.The combined score is the sum of each score, hence:
C = -5 + (-6) = -5 - 6 = -(5 + 6) = -11.
Connor's current score is of -11 points.
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A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complained drying times are longer than the claimed 45 minutes. A consumer advocate group takes a random sample of 25 paint specimens and records their drying times. The average drying time x is 52. Consider dryng time, for all test specimens, to be normally distributed with ? = 6.
Suppose the claimed drying time is true, that is ? = 45 minutes, what is the probability of observing a sample mean of x = 52 or greater from a sample size of 25? (Round your answer to four decimal places.)
Answer:
The probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026
Step-by-step explanation:
Mean = [tex]\mu = 45[/tex]
Population standard deviation =[tex]\sigma = 6[/tex]
Sample size = n =25
Sample mean = [tex]\bar{x} = 52[/tex]
We are supposed to find the probability of observing a sample mean of x = 52 or greater from a sample size of 25 i.e.[tex]P(x\geq 52)[/tex]
[tex]Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}\\Z=\frac{52-45}{\frac{6}{\sqrt{25}}}[/tex]
Z=5.83
P(Z<52)=0.9999974
[tex]P(Z\geq 52)=1-P(z<52)=1-0.9999974=0.0000026[/tex]
Hence the probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026
Answer:
the probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026
Step-by-step explanation:
What is the volume of the cylinder? Use 3.14 for π, and round your answer to the nearest tenth. Enter your answer in the box.
Answer:
235.5
Step-by-step explanation:
3.14x2.5^2x12
3.14x6.25x12
19.625x12
235.5
Answer :
240 ft³⠀
Explanation :
We know,
[tex]{ \longrightarrow \qquad{\boldsymbol {\pmb{ Volume_{(cylinder)} = \pi {r}^{2} h \: }}}}[/tex]
Where,
r is the radius of the cylinder. Here, diameter is 5 ft, so the radius will be 2.5 fth is the height of the cylinder. Here, h is 12 ft Here, we will take the value of π as 3.14 approximately .⠀
Substituting the values in the formula :
[tex]{ \longrightarrow \qquad{ { \sf{ Volume_{(cylinder)} = 3.14 \times ({2.5})^{2} \times 12 \: }}}}[/tex]
⠀
[tex]{ \longrightarrow \qquad{ { \sf{ Volume_{(cylinder)} = 3.14 \times 6.25 \times 12 \: }}}}[/tex]
⠀
[tex]{ \longrightarrow \qquad{ { \sf{ Volume_{(cylinder)} = 3.14 \times 75 \: }}}}[/tex]
⠀
[tex]{ \longrightarrow \qquad{ \boldsymbol { \pmb{ Volume_{(cylinder)} = 235.5 \: }}}}[/tex]
⠀
Therefore,
The volume of the cylinder is 240 ft approxiamtely.Use the protractor in the picture to find the measure of angles. THANK YOU!!!
Answer:
2b) KOM = 143°
c) as the value of a straight line is 180°, and the angle LOK is 37°, subtract 180° with 37° and you will get the value for KOM.
Step-by-step explanation:
2b) subtract 180° with 37°
c) it is just using logical and mathematical sense from the question 2b
cual es el doble de un numero
Answer:
Dos veces más. Ejemplo: 4 es el doble de 2
Step-by-step explanation:
Andrew's monthly salary is $3,250, plus he carns a 1.4% commission on his sales cach month. Andrew's
sales for November were $51,000. What were his total earnings for November?
What is an equation of the line that passes through the points (-6,-4) and
(-4,0)?
Answer:
y = 2x + 8
Step-by-step explanation:
the equation of a line in slope-intercept form is.
y = mx+b
where m is the slope and b the y-intercept
to calculate m use the gradient formula
m = (y2−y1 ) / (x2−x1)
let (x1,y1)=(-6,-4) and (x2,y2)=(-4,0)
m = (0 - (-4)) / (-4 - (-6) = 2
y = 2x+b←is the partial equation
to find b substitute either of the 2 given points
into the partial equation
using (-6, -4) then
-4 = -12+b⇒b=8
y = 2x + 8←is the equation of line
Ray is buying some ginger roots to brew some fresh ginger ale. The price of the ginger roots is GGG, and Ray has a coupon for 10\%10%10, percent off. The expression 0.99, G represents the price Ray pays for the ginger roots after using the coupon. What does 0.90, 9 represent in this context?
Answer:
0.9 in the context represent the price of the ginger
It is called decreasing factor for the function because it decreases the price of the ginger
Step-by-step explanation:
Original price of fresh ginger ale = G
Coupon = 10% off
The actual price paid = 100% - 10% of G
= 90% of G
= 90/100 × G
= 0.9 × G
= 0.9G
0.9 in the context represent the price of the ginger
It is called decreasing factor for the function because it decreases the price of the ginger
Answer:
The percent, as a decimal, of the original price that Ray paysStep-by-step explanation:
thats straight from khan academy
12 batteries cost $25 = ? dollars per battery
$2
$2.08
$2.50
$12.25
Answer:
$2.08 per battery
Step-by-step explanation:
what is the the quotient of 3/8 and 4/9
Answer:
3/8 = 0
4/9= 0
Step-by-step explanation:
The quotient is 0 because the numerator is less than the denominator.
Answer:
27/32 is the answer
Step-by-step explanation:
Did the math, did the recipicol of 4/9 then multiplied.
What is/are the variable(s) in this expression: 6a-7b+8
Answer:
a , b
Step-by-step explanation:
ans this are the variables
I need help (picture of the question above^)
Answer:
a is the answer
Step-by-step explanation:
x^2= 90
X=√90
X=3√10 (positive irrational number)
but other solutions have exact value or in decimal
PLEASE HELP ME ITS DUE TODAY I WILL MARK YOU BRAINLIST
5. Mia is stretching out before dance class. She sometimes places a band around her calves to get an extra stretch.
Part 1: Sketch and label the triangle that illustrates the scenario and givens required for the proof. (3 points)
Part 2: Use the spaces provided below to complete a formal proof. (5 points)
Answer:
It's Arrives
Step-by-step explanation:
HOW MANY BURGERS CAN BE MADE FROM 1,000,000,000 COWS ?
YOU CAN GET 1,200 BURGERS FROM EACH COW .
please do the work im trying to prove something
Answer:
1200000000000
Step-by-step explanation:
multiply them together
brainliest appreciated
Which of the following points is between 2 and -3 on the number line?
-4 3 -2 -5
Answer:
-2
Step-by-step explanation:
-5 -4 -3 -2 -1 0 1 2 3 4 5
Factor the perfect-square trinomial in y = (x2 + 2x + 1) − 1− 1.
y = (x +
2
)2 − 1 −1
Answer:
is one
Step-by-step explanation:
did it on test so pog got it right
Answer:
2 for simplify part
Step-by-step explanation:
on edge
Total consumption of fruit juice in a particular country in 2006 was about 1.85 billion gallons. The population of that country in 2006 was 300 million. What was the average number of gallons of fruit juice consumed per person in the country in 2006?
Given :
Population of country in 2006 , P = 300 million.
Consumption of fruit juice in 2006 by while population, C = 1.85 billion.
To Find :
The average number of gallons of fruit juice consumed per person in the country in 2006.
Solution :
We know, 1 billion = 1000 million.
C = 1.85 billion = 1850 million.
Now, average umber of gallons of fruit juice consumed per person in the country in 2006 is :
[tex]c =\dfrac{C}{P}\\\\c=\dfrac{1850}{300}\ gallons/person\\\\c=6.17 \ gallons/person[/tex]
Hence, this is the required solution.
Determine whether the sequence is arithmetic, geometric, or neither: 20,17,14,11
==================================================
Explanation:
Add -3 to each term to get the next term. This is the same as subtracting 3 from each term. In this case, the common difference is d = -3.
The first term is a = 20
---------
The nth term formula for the arithmetic sequence is
a(n) = a+d(n-1)
a(n) = 20+(-3)(n-1)
a(n) = 20-3n+3
a(n) = -3n+23
If we plug in n = 1, we would get a(n) = 20. Plug in n = 2 to get a(n) = 17. And so on. This helps confirm we have the correct nth term formula.
Drake’s monthly outlay include a $70 phone bill and a $120 car assuming he makes $400 a month, how much does he have to spend after paying his bills?
The solution is, $210 does he have to spend after paying his bills.
What is Subtraction?Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.
here, we have,
given that,
Drake’s monthly outlay include a $70 phone bill and a $120 car assuming he makes $400 a month,
i.e. we get,
Drake’s monthly outlay include a $70 phone bill and a $120 car.
so, total spend = $ 120 + 70
= $190
now, we have to find how much does he have to spend after paying his bills.
so, we have to subtract 190 from 400
i.e. 400 - 190
=210
Hence, $210 does he have to spend after paying his bills.
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A bag contains 1 blue, 2 green, and 2 red marbles. You choose a marble with one hand and then a second marble with the other hand. What is the probability that you will first choose a red marble followed by a green marble?
The probability that you will first choose a red marble followed by a green marble is 20%.
ProbabilitiesGiven that a bag contains 1 blue, 2 green, and 2 red marbles, and you choose a marble with one hand and then a second marble with the other hand, to determine what is the probability that you will first choose a red marble followed by to green marble the following calculation must be made:
1 + 2 + 2 = 52/5 x 2/4 = X0.4 x 0.5 = X0.2 =X0.2 x 100 = 20Therefore, the probability that you will first choose a red marble followed by a green marble is 20%.
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The probability of choosing a red marble is 2/5 while the probability of choosing a green marble after a red marble is 1/2
Data;
blue = 1green = 2red = 2Probability without replacementTo solve this problem, we have to do probability without replacement.
The total number of marbles in the bag is
[tex]1 + 2 + 2 = 5[/tex]
The probability of choosing a red marble is
Number of read marbles = 2
probability of choosing a red marble is
[tex]P = \frac{2}{5}[/tex]
The probability of choosing a green marble after a red marble is
[tex]P = \frac{2}{4} =\frac{1}{2}[/tex]
The probability of choosing a red marble is 2/5 while the probability of choosing a green marble after a red marble is 1/2
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The volume of a cylinder is approximately 942 cubic inches. The height of the cylinder is 12 inches. Which is the best approximation for the radius of the cylinder? 4 inches, 6 inches, 7 inches, 5 inches
Answer: 5 inches
Step-by-step explanation:
The volume of a cylinder is equal to pi*radius^2*height.
We can replace the height with 12 inches and the volume with 942 cubic inches.
Therefore, 942 in^3 = pi*radius^2*12 inches
We can divide both sides by 12:
pi*radius^2 = 78.5 inches^2
We can divide both sides by pi:
Radius^2 = About 24.99 inches^2
We can square both sides:
Radius approximately equals 5 inches.
Find the value of the unknown angle x.
The diagram is not drawn to scale.
Please help. Thank you.
Answer:
Step-by-step explanation:
interior angle =(n-2)180
=(4-2)*180
=360
360=164+71+24+x
360=260+x
x=360-260
x=100
Answer:
Step-by-step explanation:
Since angles in quadrilateral (4-sided shape) add up to 360 degrees
therefore,
360 = 164 + 71 + 25 + x
360 = 260 + x
subtract 260 from both sides
360-260 = 260-260 + x
100 = x
The soccer team's shirts have arrived in a big box, and people just start grabbing them, looking for the right size. The box contains 6 medium, 10 large, and 10 extra-large shirts. A player wants a medium for himself and one for his sister. Find the probability of each event described. Complete parts a through d below.
a) Probability of getting a medium shirt for the player ≈ 0.0385
b) Probability of getting a medium shirt for the player's sister ≈ 0.0385
c) Probability of getting a medium shirt for both the player and his sister ≈ 0.00148225
d) Probability of getting either a medium, large, or extra-large shirt ≈ 0.0385.
Here, we have,
To find the probability of each event, we first need to determine the total number of shirts in the box and the number of shirts that satisfy each event.
a) Probability of getting a medium shirt for the player:
Total number of medium shirts = 6
Number of medium shirts needed for the player = 1
Probability = (Number of medium shirts needed) / (Total number of shirts) = 1 / (6 + 10 + 10) = 1 / 26 ≈ 0.0385
b) Probability of getting a medium shirt for the player's sister:
Total number of medium shirts = 6
Number of medium shirts needed for the player's sister = 1
Probability = (Number of medium shirts needed) / (Total number of shirts) = 1 / (6 + 10 + 10) = 1 / 26 ≈ 0.0385
c) Probability of getting a medium shirt for both the player and his sister:
Since the two events are independent (one person getting a medium shirt does not affect the other's chance of getting a medium shirt), we can multiply the probabilities of each event:
Probability = Probability of player getting a medium shirt * Probability of player's sister getting a medium shirt ≈ 0.0385 * 0.0385 ≈ 0.00148225
d) Probability of getting either a medium, large, or extra-large shirt:
Total number of medium, large, and extra-large shirts = 6 + 10 + 10 = 26
Number of shirts needed = 1 (for the player or his sister)
Probability = (Number of shirts needed) / (Total number of shirts) = 1 / 26 ≈ 0.0385
To summarize:
a) Probability of getting a medium shirt for the player ≈ 0.0385
b) Probability of getting a medium shirt for the player's sister ≈ 0.0385
c) Probability of getting a medium shirt for both the player and his sister ≈ 0.00148225
d) Probability of getting either a medium, large, or extra-large shirt ≈ 0.0385.
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What is the exact length of EC?
A. 4√29/7 Feet
B.√164 Feet
C. 4√5 Feet
D. 2√41 Feet
Answer:
C. [tex]4\sqrt{5}[/tex] feetStep-by-step explanation:
We have similar triangles:
ΔADC ~ ΔBECFind segment BC using similarity and ratios:
AD/ BE = AC / BC28 / 8 = (10 + BC)/ BC28BC = 8(10 + BC)28BC = 8BC + 8020BC = 80BC = 4Find EC using Pythagorean:
[tex]EC = \sqrt{BE^2+BC^2}=\sqrt{8^2+4^2}=\sqrt{64+16}=\sqrt{80}=4\sqrt{5}[/tex]Correct choice is C
The area of the parallelogram is 50 square kilometers. What is the parallelogram's base, b?
Answer:
✓50 km
Step-by-step explanation:
Here, Area of parallelogram = base x height
so, at least two data should be given,
hence, let us consider base = height in this case.
Here it becomes,
Area of parallelogram = base²
50 km² = base²
Now, providing square root on both sides,
we get,
✓50 km = base
what is the sum of 1/2 + 1/4?
A. 2/8
B. 2/6
C. 4/8
D. 6/8
3/4 is the total.
See attached image for explanation.
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