Conditional probability: p(A|B) is the probability of event A occurring, given that event B occurs.
Example: the probability that a card drawn is red (p(red) = 0.5).
Another example: the probability that a card drawn is a 4 (p(four)=1/13).
Joint probability: p(A and B). The probability of event A and event B occurring.
Rectangle PQRS is shown with its diagonals, PR and QS.
Rectangle P Q R S is shown. Diagonals are drawn from point P to point R and from point S to point Q and intersect at point T.
What type of triangle is △STR?
right triangle
equilateral triangle
isosceles triangle
scalene triangle
Answer:
the triangle is an isosceles triangle
The type of triangle STR is Isosceles triangle
Properties of a rectangleOpposite side are parallelOpposite sides are congruentOpposite angles are congruentDiagonal are congruent and they bisect each other.Since the diagonal bisect each other, the triangle STR formed has two opposite sides equal to each other and the base angle of the triangle STR are congruent.
Therefore, triangle STR is an Isosceles triangle.
Isosceles triangle have two of it sides equal to each other.
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if c= the number of cars in a parking lot which algebaraic expression represents the phrase below the number of cars increased by 9
Answer:
C+9
Step-by-step explanation:
Can someone help me with this? please
9514 1404 393
Answer:
(30, 72, 78)
Step-by-step explanation:
When testing a number of triples to see if they are Pythagorean triples, it can be convenient to let a spreadsheet do the math. The attachment shows us the triple at lower left (30, 72, 78) is a Pythagorean triple. That is, the sum of the squares of the smaller two numbers is the square of the larger, so they can form a right triangle.
__
You may recognize these numbers have the ratios 5:12:13, the ratios of an often-used triple.
Cost of dinner = $30 Tip = 20% Total paid _?
Answer:
36$
Step-by-step explanation:
20 percent of 30 is 6
30+6=36
the volume of a triangular prism is V=1/2abh, where a is the altitude or height of the triangle, b is the base of the triangle and h is the height of the prism. solve for the formula V=1/2abh for H
9514 1404 393
Answer:
h = 2V/(ab)
Step-by-step explanation:
Divide both sides of the equation by the coefficient of h.
V = (abh)/2
h = 2V/(ab)
Question is in the image
Answer:
0.722
Step-by-step explanation:
First of all add up the sections 1 to 8 to make sure they add to 360
They do actually.
1 102 203 304 405 506 607 708 80Total 360
This is an area question. Every time you spin the spinner, it must come to an area labeled 1 to 8.
You could do this by setting up a ratio of each section and subtract the section for 3 and 7. That's the long way.
The shorter way is to add up the degrees for 3 and 7 and subtract them from the total (360)
Area 3 + area 7 = 30o + 70o = 100 degrees.
So the probability of landing in 3 or 7 is 100 / 360 = 0.278 (rounded)
The probability of Not landing on 3 or 7 is 1 - 0.278 = 0.722
The height of a plant in mm is 7. It doubles each week. Select all expressions that represent the
height of the plant, in mm, after 4 weeks.
Answer:
I only know that it will be 28 mm tall but you have to be more specific
All expressions equivalent to 4(2+x):
Answer and Step-by-step explanation:
8 + 4x -- Distributed the 4 to the 2 and x.
2(4 + 2x) -- Taking out the 2 from the 8 and 4x, instead of the 4.
These are the answers.
#teamtrees #PAW (Plant And Water)
Alegbra- How can I solve #5?
Answer:
3
9
21
Step-by-step explanation:
For the first one use the law of total probability
B=A∩B+A'∩B
12=9+A∩B
A∩B= 3
For this one you should use demorgans law and the union formula
(A'∩B')=(AUB)'
AUB= A+B-A∩B
6+12-3=15
15'= 24-15 = 9
For this one use demorgans law again
(A'UB')=(A∩B)'
(A∩B)'= 24-A∩B= 24-3= 21
Suppose 54% of the registered voters in a country are Democrats. If a sample of 770 voters is selected, what is the probability that the sample proportion of Democrats will be greater than 52%? Round your answer to four decimal places.
Answer:
0.8665 = 86.65% probability that the sample proportion of Democrats will be greater than 52%.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
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.
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
Suppose 54% of the registered voters in a country are Democrats. Sample of 770.
This means that:
[tex]p = 0.54, s = \sqrt{\frac{0.54*0.46}{770}} = 0.01796[/tex]
What is the probability that the sample proportion of Democrats will be greater than 52%?
This is 1 subtracted by the p-value of Z when X = 0.52. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.52 - 0.54}{0.01796}[/tex]
[tex]Z = -1.11[/tex]
[tex]Z = -1.11[/tex] has a p-value of 0.1335
1 - 0.1335 = 0.8665
0.8665 = 86.65% probability that the sample proportion of Democrats will be greater than 52%.
7 1/5 - 6 2/5 = ?
A 13 3/5
B 1 1/5
C 1 4/5
D 4/5
Please answer it correctly
Answer:
8,000 I'm pretty sure so yw if it's right
Answer:
5,332..I hope soo the answer is
please help. Thank you
Answer:
30.8 degrees
Step-by-step explanation:
cosx = [tex]\frac{8.5}{9.9}[/tex]
x= [tex]cos^{-1}[/tex][tex]\frac{8.5}{9.9}[/tex]
= 30.8 degrees (nearest tenth of a degree)
PLEASE ANSWER ASAP!!! FULL ANSWERS ONLY!!!!!! WILL GIVE BRAINLIEST!!!!!!!!!
Dakota's wife sends him to the store to buy pickles and ice cream. Ice cream cost 5 dollars per pound and pickles costs 4 dollars per pound. Dakota has 100 dollars in his wallet.
Let x be the number of pounds of ice cream and y be the number of pounds of pickles that Dakota purchases. State the inequality that represents his budget, and graph the solution that represents the possible combinations of x and y. Express your answer with the standard form ax+by on the left side.
The budget inequality is _________________________
Answer: 5x + 4y ≤ 100
Step-by-step explanation:
x = amount of ice cream($5 each)y = amount of pickles($4 each)5x + 4y ≤ 100
It has to be ≤ 100 because the dude only has $100 and can't exceed that.
Find the greatest common factor of 65a^3b^4 and 39a^4b^5.
A) 13a^3b^4
B) 6a^7b^5
C) 13a^7b^9
D) 6a^4b^5
Answer:
the answer is 13a3b4. You’ll get the answer correctly. It’s not C
Step-by-step explanation:
The diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.002 inch and a standard deviation of 0.0004 inch. What is the probability that a diameter is between 0.0014 and 0.0026 inches
Answer:
[tex]P(0.0014 < x < 0.0026) = 0.86639[/tex]
Step-by-step explanation:
Given
[tex]\mu = 0.002[/tex]
[tex]\sigma = 0.0004[/tex]
Required
[tex]P(0.0014 < x < 0.0026)[/tex]
First, calculate the z score
[tex]z = \frac{x - \mu}{\sigma}[/tex]
For x = 0.0014
[tex]z = \frac{0.0014 - 0.002}{0.0004}[/tex]
[tex]z = \frac{-0.0006}{0.0004}[/tex]
[tex]z = -1.5[/tex]
For x = 0.0026
[tex]z = \frac{0.0026 - 0.002}{0.0004}[/tex]
[tex]z = \frac{0.0006}{0.0004}[/tex]
[tex]z = 1.5[/tex]
So, we have:
[tex]P(0.0014 < x < 0.0026) = P(-1.5<z<1.5)[/tex]
From z probability table, we have:
[tex]P(-1.5<z<1.5) = 0.86639[/tex]
Hence:
[tex]P(0.0014 < x < 0.0026) = 0.86639[/tex]
What are the solution(s) to the quadratic equation x2 – 25 = 0?
Answer:
x = ± 5
Step-by-step explanation:
Given
x² - 25 = 0 ( add 25 to both sides )
x² = 25 ( take the square root of both sides )
x = ± [tex]\sqrt{25}[/tex] = ± 5
solutions are x = - 5, x = 5
What is the value of x ?
Answer:
What is the value of x?
Whenever we have a problem to solve we assume the unknown quantity(or value to be identified) as x. This is just a convention followed in algebra by using a variable to denote the unknown quantity and then arrive at the solution.
What is the value of X?
What's the value of X?
X + X = X, what is the value of X?
What is the value of x ? How can I find it?
Do you know the value of x?
Value of X can be any numerical value or anything but depends solely on your question .But I find no question ok lets take an example .
If an equation is given ,
X+2=4
=> X=4–2
=>X=2
We X's value as 2 .
Now another ,
X + Y = 5 , 2X + 5Y = 10
Now taking first equation
X = 5-Y ………………………..(1)
Now taking second equation
X= 10–5Y/2…………………(2)
Now,
2(5-Y) = 10–5Y
=> 10–2Y = 10–5Y
=> 2Y = 5Y
Y has no value here because this equation not correctly represented .
Hence ,
We conclude the value of X varies with equation .
Thank You ,
Answer:
28.61258...
Step-by-step explanation:
Don't really know how to explain this over a computer, but it is correct.
Hope that this helps!
The value of StartRoot 52 EndRoot. is between which two integers?
5 and 6
6 and 7
7 and 8
8 and 9
===============================================
Explanation:
When you list out the perfect squares, notice that 49 and 64 are on that list.
These are values we focus on because 49 < 52 < 64
We'll apply the square root to all three sides
[tex]49 < 52 < 64\\\\\sqrt{49} < \sqrt{52} < \sqrt{64}\\\\7 < \sqrt{52} < 8\\\\[/tex]
This shows that [tex]\sqrt{52}[/tex] is between 7 and 8
A calculator helps confirm this
[tex]\sqrt{52} \approx 7.2111\\\\[/tex]
If agronomists used an exponential model to fit the data, which function h(t), which represents the height of the beanstalk t days after planting, best fits the data? Beans begin to sprout on the 14th day. Consider the value predicted by the model on the 14th day. Which statement is true?
When using GeoGebra, I'm getting the regression curve to be roughly
h(t) = 1.67*(1.4)^t
I'm not sure how your teacher got 1.64 instead of the 1.67, but it's fairly close. So it seems like choice B is the best answer for the first part.
---------------------------------------------------
Once we know the regression equation, we plug in t = 14 to find that,
h(t) = 1.64*(1.4)^t
h(14) = 1.64*(1.4)^(14)
h(14) = 182.236911939151
h(14) = 182.2
If 14 days have gone by, then we estimate the height is roughly 182.2 inches.
Compared to what the table says, which is 190 inches, we see that we have an underestimate. The error is about 190-182.2 = 7.8 which is under 10.
Answer: Choice C
The model under-predicts the actual height by less than 10 inches
Lean a is 6 years older than Hayden.The product of their age is 40. How old is hayden
5.7
Step-by-step explanation:
Lean- 6x
Hayden- x
x+ 6x=40 Equation
7x=40 Added the x and 6x
x= 5.7 Divided from each side
Line s is the perpendicular bisector of JK. If line s intersects JK at point L
which of the following statements must be true?
Answer:
You don't have your options listed but if one of them is Point L is the midpoint of the segment, that would be your answer.
Step-by-step explanation:
If the code AXISEM represents the number 9.54207, what number is represented by the code XlS + SEX? a.AIM b.MIM c.MES d.SIX
Answer:
B. MIM
Step-by-step explanation:
A = 9
X = 5
I = 4
S = 2
E = 0
M = 7
XIS = 542, SEX = 205
542 + 205 = 747
747 = MIM
A rectangle measured 2 ⅔ inches by 1 5/9 inches what is its area
Answer:
4 4/27 sq inches
Step-by-step explanation:
the area is 2⅔ × 1 5/9 = 8/3 × 14/9
= 112/27 = 4 4/27
Evaluate: 2^-4=
A1/8
B-16
C1/16
D-8
Answer:
C) 1/16
Step-by-step explanation:
2*2*2*2=16
Therefore, 2^(-4)=1/16.
Answer:
C) [tex]\frac{1}{16}[/tex]
Step-by-step explanation:
2⁻⁴
2⁴ = 2 × 2 × 2 × 2 = 16
[tex]\frac{1}{16}[/tex]
Simplify (4 - x²)/2x - x² where x≠0 and x≠2
Answer
1+2/xStep-by-step explanation:
This makes no sense, I don’t understand
Answer:
the range where we see the function is between x=0 and x=7
its B
A is impossible btw, no number is smaller or equal to 0 AND bigger or equal to 7
please brainliest
Evaluate 11/12*12/121- -6/5*70/60
Answer:
82/55
Step-by-step explanation:
11/12 * 12/121 - -6/5 * 70/60 = 1/11 + 14/10 = 1/11 + 7/5 = 5/55 + 77/55 = 82/55
The required solution of the given expression is 82/55.
What is simplification?Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve, For example, simplifying an algebraic expression might involve combining like terms, factoring, or using the distributive property
The given expression is,
= 11/12*12/121- -6/5*70/60
Simplify the above expression,
= 11/121+ 70/50
= 1/11 + 7/5
The common denominator between the two fractions is 55, so
= 5 + 77 / 55
= 82 / 55
Thus, the required solution of the given expression is 82/55.
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Several logs are stored in a pile with 22 logs on the bottom layer, 21 on the second layer, 20 on the
third layer, and so on. If the top layer has one log, how many logs are in the pile?
Answer:
[22 x 21] / 2=231 or "c"
Step-by-step explanation:
Which number is missing in the table of values below?
x
y
0
1
1
6
2
36
3
?
4
1,296
108
216
324
648
Answer:
216
Step-by-step explanation:
Correct on Edge
The solution is: 216, is missing number in the table of values below.
What is an exponent in math?An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
Given :
x = 0 ,1 ,2 ,3 , 4
y = 1 ,6 ,36 ,? , 1296
As we can see that values of y :
y = 6^0 = 1
y = 6^1 = 6
y = 6^2 = 36
y = 6^3 = 1296
so y =216 , is the solution
so, we get, the values of y is exponent of 6 as the values of x, respectively.
The equation can be given for solving the question is y = 6^x
By putting given values of x we are getting values of y .
So for x =3 we are getting y = 216
Hence, 216, is missing number in the table of values below.
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