What’s the value of X????
There is a bag filled with 3
blue marbles, 7 red and 1 yellow.
Deeka picks out a marble from
the bag, notes its colour and
replaces it. She then takes
another marble out of the bag.
What is the probability of getting
exactly 1 blue?
Answer:
6/11 you could pull one of the three blues first or one of the three blues second
At least that's my best guess
Answer:
48/121
Step-by-step explanation:
In symbols:
(P blue ∩ P non blue) ∪ (P non blue ∩ P blue)
∩ = *
∪ = +
Since the marble is replaced, the total probability is always the same
(3/11 * 8/11) + (8/11 * 3/11)
24/121 + 24/121 = 48/121
One fourth of the sum of a number and two is three.
Answer:
x = 10
Step-by-step explanation:
(1/4(x +2) = 3
x+2 = 12
x = 10
Answer:
The number is 6.
Step-by-step explanation:
[tex]\frac{1}{4}=0.25[/tex]
0.25 × (y × 2) = 3
0.25 × 2y = 3
0.5y = 3
0.5y ÷ 0.5 = 3 ÷ 0.5
y = 6
Check:
0.25 × (y × 2) = 3
0.25 × (6 × 2) = 3
0.25 × 12 = 3
3 = 3
Please help me with this as quickly as possible!
Answer:
1:2
is your answer
Step-by-step explanation:
Valerie had a bottle that was filled with that contained 128oz juice to put into cups, she filled each cup with 6 floz of juice, until there was not enough in the bottle to completely fill another cup.
How many fluids ounces of juice was left in the bottle?
When draining her hot tub, the height of the water in Brittany’s hot tub decreases at a rate of 2 inches per minute. After 9 minutes there are 11 inches of water in the tub. Assume that the height is decreasing at a constant rate.
a. Write an equation for the height of water left in the tub (h) as a function of the number of the minutes (t) that have elapsed.
b. What values of the domain, t, make sense? Why?
c. What values of the range, h, make sense? Why?
Step-by-step explanation:
a.
Let's give the starting amount of water as s. Every minute, 2 inches of water are lost, meaning that given the starting amount, s, we subtract 2 inches from s every minute, so s - 2 every minute = height of water left, so s - 2t (t representing minutes) = h
To figure out s, we simply plug our known value -- 9 minutes in and 11 inches left. s - 2(9) = 11, s-18=11, s= 29
29 - 2t = h
b. We know that we cannot have negative minutes, so the minimum amount of time that makes sense is 0. To figure out the maximum, we stop counting how much time has occurred when there is no water left, so we have to figure out when h = 0
29-2t = h = 0
t=14.5
Therefore, anything between 0 and 14.5 minutes makes sense
c. Anything between 0 and 29 makes sense because the height of water cannot be negative and we cannot get higher than the starting amount
Determine which data are qualitative and which data are quantitative. Explain your reasoning
a. The yearlysalaries of the employees at aschool district.(2pts)
b. The employeenumbers of the employees at an accounting firm.(2pts)
c. The areacodes of a sample of 350 residents of nursing homes.(2pts)
d. The ages of a sample of 350 residents of nursing home. (2pts)
e. The answers to a survey of 5000 people about how likely is it that the US will enter a 1930s-like depression. The answers are: Very likely, somewhat likely, not very likely, not at all likely. (2pts)
f. The IQ index of the students in a statistics class.(2pts)
Answer:
a. Quantitative
b. Qualitative
c. Qualitative
d. Quantitative
e. Qualitative
f. Quantitative
Step-by-step explanation:
Qualitative measures:
Answers are labels, that is, yes/no, good/bad, or numbers in which comparisons or operations cannot be made.
Quantitative measures:
Answers are numbers in which comparisons are made, or possible operations.
a. The yearly salaries of the employees at a school district.(2pts)
Salaries are numbers, in which comparisons can be made(more or less), so quantitative.
b. The employee numbers of the employees at an accounting firm.(2pts)
Number, but comparisons aren't made with these numbers, so qualitative.
c. The area codes of a sample of 350 residents of nursing homes.(2pts)
Number, but comparisons aren't made with these numbers, so also qualitative.
d. The ages of a sample of 350 residents of nursing home. (2pts)
Number, comparisons made, you can rank by age for example, so quantitative.
e. The answers to a survey of 5000 people about how likely is it that the US will enter a 1930s-like depression. The answers are: Very likely, somewhat likely, not very likely, not at all likely. (2pts)
Labels, so qualitative.
f. The IQ index of the students in a statistics class.(2pts)
Students can be ranked by IQ, so quantitative.
A family went out to dinner. The cost of their meal was $689, before sales tax and tip.A sales tax of 8% was added.
The family then tipped 20% on the amount after the sales tax was added.
Part A
What was the amount, rounded to the nearest cent, of just the sales tax?
Part B
What was the total amount the family paid, including tax and tip, rounded to the nearest cent?
Answer:
The family paid $55.12 in sales tax. TOTAL= $148.82 + $55.12
Step-by-step explanation:
IMPORTANT FORMULA: To convert a percent to a number, you need to divide by 100.
Therefore, 8% = 8/100 = 4/50 = 2/25
The family paid a total of $689 without sales tax or tips.
8% of $689 would equal the amount that the family paid for sales tax.
We already found what 8% is equal to and keep in mind that the word "of" means multiplication.
2/25 * $689 = sales tax
$55.12 = sales tax
PART B) Now we have to find the total amount the family paid.
We have to add $689 with sales tax and tips.
We have to find tips.
Using the formula To convert a percent to a number, you need to divide by 100.
20% = 20/100 = 2/10 = 1/5
1/5 * ($689 + $55.12) = tips
tips = $148.82
TOTAL= $148.82 + $55.12
hey. I need help w my algebra pls asap
Answer:
The Answer is G
Step-by-step explanation:
it looking for the y in the (x,y) x is domain and y is range
ill give 30 points plz asnwer ( there are multiple answers btw) tyyy
There are four points on a line: A, B, C and D, so that (segments) AB=1, BC=2, CD=4. Find the length of segment AD. Consider all possibilities and draw a picture for each one of them.
All possible answers for the length of AD are, _, _, _, _, _.
Answer:
7,13,
Step-by-step explanation:
that's just what I think
Answer:i believe the answer is infinite.
Step-by-step explanation:
As we are free to decide what A is then all that has to be done is add the remaining answer to achieve the difference. Example i pick .25 as A which leaves 0.75 to equal 1. Then i use 0.75 and add 1.25 to equal 2. Then again 1.25 plus 2.75 to get 4. A is .25 and D is 2.75 equals 3.
The graph of y=-3x + 2 is:
Answer:
Its going to be C!
Step-by-step explanation:
the equation is a line in slope form essentially. You can use the equation to get many answers and solutions
Simplify Expressions. Which expression is
equivalent to 5x - 2 + 2x - 6
7X-8
3X-8
7x - 4
3X - 4
Answer:
7x - 8
Step-by-step explanation:
Hope this helps!
What’s the answer?!!
Answer:
6x+10mm=p is the answer
brainlest plz
NO LINKS OR ELSE YOU'LL BE REPORTED!Only answer if you're very good at Math.No guessing please.
The director of health services is concerned about a possible flu outbreak at her college.She surveyed 100 randomly selected residents from the college's dormitories to see whether they had received a preventive flu shot.The results are shown below.What is the probability that a dormitory resudent chosen at random from this group had a flu shot, given that he is male?
A: 39/80
B: 13/17
C: 39/100
D: 51/100
=============================================================
Explanation:
The "given that he is male" stated at the end means we only focus on the male column. This is because we know 100% that the person selected is male. Either we're told this by someone else, or we can determine this another way.
There are 39 males that got the flu shot out of 51 males total. The probability we're after is 39/51 = (3*13)/(3*17) = 13/17
It's effectively saying: out of every 17 males, 13 of them got the flu shot.
What is the gradient of the blue line
Answer:
Up 2 to the right 1
Step-by-step explanation:
that would be i think
Canesha and five of her friends went to the movie theater and found that there were only six seats left in the theater. How many different ways can Canesha and her friend sit in these six seats?
A. 120
B. 240
C. 720
D. 840
Answer:
Step-by-step explanation:
tis permutation - 6P6 = 6!/0! = 720/1=720
ans is C
There are total 720 ways that Canesha and her friend sit in these six seats.
what are combinations ?A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter. In combinations, you can select the items in any order.
Here, we have,
For the first seat, Canesha and 5 of her friends can all sit in. So there are a possible of 6 different persons.
For the second seat, because one has already sat down, there are a possible of 5 different persons sitting in the second seat.
Continuing on, the total number of different ways Canesha and her friends can sit in those 6 seats are:
= 6*5*4*3*2*1
= 720
Hence, There are total 720 ways that Canesha and her friend sit in these six seats.
To learn more about combinations from the given link
brainly.com/question/11732255
#SPJ3
Which of the following is a point-slope equation of a line with the point (-6,2)
and a slope of ? 1/2
Answer:
Choose (D)
y-y1=m(x-x1)
y-2=1/2(x+6)
61% of all statistics classes require a statistical calculator and 29% require the use of a computer that has statistical software of the classes that require a statistical calculator 16% also require the use of a computer if statistics course is selected at random find probability of statistical calculator
Answer:
Step-by-step explanation:
Given
61% of all statistics classes require a statistical calculator.
29% require the use of a computer that has statistical software.
of the classes that require a statistical calculator 16% also require the use of a computer.
if statistics course is selected at random find probability of statistical calculator.
Events
A = calculator
O = computer
P(A) = 0.61
P(O) = 0.29
P(A and O) = 0.16*0.61 = 0.0976
if statistics course is selected at random find probability of statistical calculator.
Answer is part of information given : P(A) = 0.61
P(calculator | computer)
= P(A & O)/P(O)
= 0.0976/0.29
= 976/2900
= 244/725
(=0.33655 approx.)
p(computer given calculator)
P(O|A) = P(A & O)/P(A)
= 0.0976/0.61
= 976/6100
= 0.16 (as per given information)
Are they mutually exclusive (they means P(calculator | computer) and p(computer given calculator) ??)
They are not mutually exclusive.
They are referring to the same thing: classes that use both, BUT using a different sample space.
are they independent
They are not independent. If they are, the conditional probabilities would be both zero.
What are the key features to graphing a polynomial function? Explain how to find these key features to sketch a rough graph.
Answer:
Graphing Polynomial Functions
Find the intercepts, if possible.
Check for symmetry. ...
Use the multiplicities of the zeros to determine the behavior of the polynomial at the x-intercepts.
Determine the end behavior by examining the leading term.
Use the end behavior and the behavior at the intercepts to sketch a graph.
In ΔFGH, f = 7.2 cm, g = 1.2 cm and h=6.6 cm. Find the area of ΔFGH to the nearest 10th of a square centimeter.
9514 1404 393
Answer:
3.6 cm²
Step-by-step explanation:
Heron's formula is usually used for calculating triangle area from side lengths.
The semiperimeter is ...
s = (7.2 +1.2 +6.6)/2 = 7.5
Then the area is ...
A = √(s(s -f)(s -g)(s -h)) = √(7.5(0.3)(6.3)(0.9)) = √12.7575
A ≈ 3.57176 cm²
The area of ΔFGH is about 3.6 square centimeters.
The area of a square is64. Cm
What is the length of its side
Answer:
The length is 8 cm. Since its a square, so the length of both its sides are equal.
l^2=64
where l=length of side
square root both sides
then, l=8
Answer:
8cm is the length of its side.
Step-by-step explanation:
Which equation shows the point-slope form of the line that passes through (3, 2) and has a slope of 1/3
O y + 2 =1/3(x + 3)
O y-2=1/3(x-3)
O y + 3 = 1/3(x+ 2)
O y-3= 1/3(x-2)
Answer:
y - 2 = 1/3(x - 3)
Step-by-step explanation:
Point slope form is y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.
Plug in the slope:
y - y1 = m(x - x1)
y - y1 = 1/3(x - x1)
Plug in the given point:
y - y1 = 1/3(x - x1)
y - 2 = 1/3(x - 3)
So, the correct answer is y - 2 = 1/3(x - 3)
Balu had a collection of coins1/2 of the coins were from Asian countries,1/3
of them from European countries and the remaining 36 from America.
How many coins were from ASIAN countries?
A)18
B)30
C)108
D)216 step by step explanation please
Step-by-step explanation:
[tex] \frac{1}{2} = asian \\ \frac{1}{3} = european \\ 36 = american \\ \frac{1}{2} + \frac{1}{3} = \frac{3 + 2}{6} = \frac{5}{6} \\ \frac{6}{6} - \frac{5}{6} = \frac{1}{6} = 36 \\ \frac{1}{6} = 36 \: so \\ \frac{6}{6} =6 \times 36 = 216 \\ \frac{1}{2} \times 216 = asian \\ \frac{1}{2} \times 216 = 108asian \\ please \: mark \: brainliest[/tex]
There are total 108 coins belonging to Asian countries.
What is equation?An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given that, Balu had a collection of coins 1/2 of the coins were from Asian countries, 1/3 of them from European countries and the remaining 36 from America.
Let the total number of coins be x,
Establishing the equation, we get,
x/3+x/2+36 = x
Multiplying the equation by 6, we get,
2x+3x+216 = 6x
6x-5x = 216
x = 216
Therefore, the total numbers of coins are 216,
Since, there are 1/2 of total coins are Asian coins,
Therefore, number of Asian coins = 216 / 2 = 108
Hence, There are total 108 coins belonging to Asian countries.
For more references on equations, click;
https://brainly.com/question/29657983
#SPJ2
Help meeeeeeeeeeeeeeeeeeeee
Answer:
question please so I can help you
Is (2, 3) a solution to this system of equations?
2x + 5y = 19
X + 16y = 5
yes
no
Answer:
No
Step-by-step explanation:
To check if (2,3) is a solution to the system of equations, we simply have to plug the coordinate points into the two equations and see if it is valid.
[tex]2*2+5*3=\\4+15=\\19\\\\19=19[/tex]
(2,3) belongs in the first equation.
[tex]2+16*3=\\2+48=\\50\\\\50\neq 5[/tex]
(2,3) does not belong in the second equation.
Therefore, (2,3) is not a solution to this system of equations.
I hope this helps! Let me know if you have any questions :)
11x^2-2x^3+7 and -x^2+6x-7 as sum
Answer:
-2x³+10x²+6x
Step-by-step explanation:
-2x³+11x²+0x+7
0x³ - x²+ 6x-7
_____________
-2x³+10x²+6x+0
_____________
determine the missing angle.
A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.31 lb, the mean of all of the weights is x=2.088 lb, and the standard deviation of the weights is s=1.968 lb. a. What is the difference between the weight of 5.31 lb and the mean of the weights? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the weight of 5.31 lb to a z score. d. If we consider weights that convert to z scores between −2 and 2 to be neither significantly low nor significantly high, is the weight of 5.31 lb significant?
Answer:
a) The difference is of 3.222 lbs.
b) 1.64 standard deviations.
c) Z = 1.64
d) Not significant, as the z-score of 1.64 is between -2 and 2.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
The mean of all of the weights is x=2.088 lb, and the standard deviation of the weights is s=1.968 lb.
This means that [tex]\mu = 2.088, \sigma = 1.968[/tex]
a. What is the difference between the weight of 5.31 lb and the mean of the weights?
This is [tex]X - \mu = 5.31 - 2.088 = 3.222[/tex]
The difference is of 3.222 lbs.
b. How many standard deviations is that [the difference found in part (a)]?
This is the z-score. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{5.31 - 2.088}{1.968}[/tex]
[tex]Z = 1.64[/tex]
1.64 standard deviations.
c. Convert the weight of 5.31 lb to a z score.
Z = 1.64, as found above.
d. If we consider weights that convert to z scores between −2 and 2 to be neither significantly low nor significantly high, is the weight of 5.31 lb significant?
Not significant, as the z-score of 1.64 is between -2 and 2.
Troy has already spent 2 minutes on the phone, and he expect to spend 3 more minutes with every phone call he routes. In all How many phone calls dose troy have to route to spend a total of 32 minutes on the phone?
2 divided by 32 is 16 so im gonna say 16
16 is ur answer
please help solve it
Answer:
Step-by-step explanation:
1 to find AB
in triangle ADB
here 4 and 2[tex]\sqrt{6}[/tex] are the legs of the right triangle so let them be a and b respectively.
AB is the hypotenuse (longest side ) and let it be x
using pythagoras theorem
a^2 + b^2 = c^2
4^2 + [tex](2\sqrt{6} )^2[/tex] = AB^2
16 + 4*6 = AB^2
16 + 24 = AB^2
40 = AB^2
[tex]\sqrt{40}[/tex] = AB
[tex]2\sqrt{10}[/tex] = AB
therefore AB =v[tex]2\sqrt{10}[/tex] .Hence proved .
In triangle ADC
here 6 and [tex]2\sqrt{6}[/tex] are the legs of the right angle so let them be a and b respectively. AC is the hypotenuse (longest side) so let it be c
usinfg pythagoras theorem
a^2 + b^2 = c^2
6^2 + [tex](2\sqrt{6} )^2[/tex] = AC^2
36 + 4*6 = AC^2
36 + 24 = AC^2
60 = AC^2
[tex]\sqrt{60}[/tex] = AC
[tex]2\sqrt{15}[/tex] = AC
To prove triangle ABC is a right angled triangle
AD and BD are the legs and AB is hypotenuse
according to pythagoras theorem to be the right angle triangle the sum of square of two smaller sides of a triangle must equal to the square of hypotenuse(longest side)
let two smaller sides be a and b respectively and c be hypotenuse
using pythagoras theorem
a^2 + b^2 = c^2
4^2 + [tex](2\sqrt{6} )^2[/tex] = [tex](2\sqrt{10} )^2[/tex]
16 +2^2*6 = 2^2*10
16 + 4*6 = 4*10
16 + 24 = 40
40 = 40
since both sides are equal it is proved that the triangle ABC is a right angled triangle.
Hope this helps u !!
Answer:
2 square root 10
Step-by-step explanation:
firstly you must find the hipotenus using the hipotenus formula AB is the hipotenus
(4)*2 + (2 square root 10)*2 = 40 juat press a calculator if you dont know
and then you press square root of 40 then you will get 2 square root 10 so you already prove that AB is 2 square root 10
