1/3 + 2/5
A. 3/8
B. 11/15
C. 3/3
D. 3/5
Answer:
\(\frac{11}{15} \)
Step-by-step explanation:
\(\frac{1}{3} \) + \(\frac{2}{5} \)
The least common multiple of 3 and 5 is 15. Convert \(\frac{1}{3} \) and \(\frac{2}{5} \) to fractions with denominator 15.
\(\frac{5}{15} \) + \(\frac{6}{15} \)
Since \(\frac{5}{15} \) and \(\frac{6}{15} \) have the same denominator, add them by adding their numerators.
\(\frac{5+6}{15} \)
Add 5 and 6 to get 11.
\(\frac{11}{15} \)
Hope it helps and have a great day! =D
If xx is a binomial random variable, compute P(x)P(x) for each of the following cases:
(a) P(x≤6),n=9,p=0.8
P(x)=
(b) P(x>8),n=9,p=0.3
P(x)=
(c) P(x<1),n=9,p=0.1
P(x)=
(d) P(x≥2),n=4,p=0.8
P(x)=
P(x < 1
a) P(x ≤ 6), n = 9, p = 0.8
Using the binomial cumulative distribution function, we can compute P(x ≤ 6) as follows:
P(x ≤ 6) = Σ P(x = i) for i = 0 to 6
= Σ (9 choose i) * (0.8)^i * (0.2)^(9-i) for i = 0 to 6
= 0.000015 + 0.000459 + 0.005902 + 0.042467 + 0.181904 + 0.393668 + 0.328126
= 1.352541 * 10^-5 + 0.000458818 + 0.005902008 + 0.042467328 + 0.181904316 + 0.393668288 + 0.328126005
= 0.952446763
Therefore, P(x ≤ 6) = 0.952.
(b) P(x > 8), n = 9, p = 0.3
Using the binomial cumulative distribution function, we can compute P(x > 8) as follows:
P(x > 8) = 1 - P(x ≤ 8)
= 1 - Σ P(x = i) for i = 0 to 8
= 1 - (0.43046721 + 0.25412184 + 0.07886593 + 0.016515105 + 0.002316831 + 0.000218700 + 1.0776 * 10^-5 + 2.43 * 10^-7 + 2.43 * 10^-9)
= 0.000011
Therefore, P(x > 8) = 1.1 * 10^-5.
(c) P(x < 1), n = 9, p = 0.1
Using the binomial cumulative distribution function, we can compute P(x < 1) as follows:
P(x < 1) = Σ P(x = i) for i = 0 to 0
= (9 choose 0) * (0.1)^0 * (0.9)^9
= 0.387420489 * 10^-9
= 3.874 * 10^-10
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The swimming pool is open when the temperature is higher than 20C. Lahey tried to swim Monday and Thursday(which was 3 days later). The pool was open on Monday, but it was closed on Thursday. The high temperature was 30C on Monday, but decreased at a constant rate in the next 3 days.
WRITE an inequality to determine the rate of temperature decreased in degrees Celsius per day d, from Monday to Thursday.
An inequality to determine the rate of temperature decrease in degrees Celsius per day d, from Monday to Thursday is 30°c - 3d \(\leq\) 20°c
Let's assume the constant rate of decreasing the temperature be d degree Celsius.
So, the total decrease in temperature in three days is 3d degree Celsius.
Given,
The temperature on Monday is 30° c
Then,
The temperature on Thursday (which is 3 days later) will be 30°c - 3d
Since the pool opens when the temperature is higher than 20°c,
The equation to determine the rate of temperature decrease in degrees Celsius per day will be 30°c - 3d \(\leq\) 20°c
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Adam is helping make mashed potatoes for Thanksgiving. He plans to add 4 fluid ounces of heavy cream to his potatoes. If he buys 1-pint carton, how many fluid ounces will he have left?
Right answer gets brainliest!! :)
Which graph is NOT a function?
Step-by-step explanation:
Use the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.
my only advice
the second on bottom row with blue triangle
trig questions above solve for x and round to the nearest tenth
Answer:
x= 51.3
x=35.1
Step-by-step explanation:
10.)
For this one we have the adjacent side and the hypotonouse
Which means we'll use CAH
cos(x)=25/40
x= 51.31781255
(assuming that we have to round to the nearest tenth again)
x=51.3
12.)
For this one we have the adjacent and hyptonouse
we'll use CAH again
cos(x)=27/33
x= 35.09680123
x=35.1
worth 20pointsss
find the circumference of a circle with d=97cm diameter
round to 3 significant figure
The required circumference of the circle with a diameter of 97 cm is 304 cm.
The circumference of a circle can be calculated using the formula:
C = πd
Where 'd' is the diameter of the circle, and 'π' is a mathematical constant approximately equal to 3.14159.
In this case, the diameter of the circle is given as 97 cm. So we can substitute this value into the formula to get:
C = πd
C = π(97 cm)
C ≈ 304.35 cm
Rounding this answer to 3 significant figures gives:
C ≈ 304 cm
Therefore, the circumference of the circle with a diameter of 97 cm is 304 cm.
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I need a answer for this:
What causes a wagon to speed up when going down a hill?
Answer:
supermax makes it go fast
Step-by-step explanation:
help pleaseeeeee ????
Please help, sorry if it’s not clear I tried to get it all in one spot
Answer:
E
Step-by-step explanation:
The y- coordinate of any point on the x- axis is zero , that is
(c, 0 ) where c is the value of the x- coordinate
The diagram shows a convex polygon.
What is the sum of the interior angle measures of this polygon?
°
Answer:
1080
Step-by-step explanation:
3. Elon is paid by the hour. He earned $50 for a 4 hour workday. How much
does he earn in one hour?
3b. How much does he earn for half an hour?
3c. How much does he earn in 5 hours?
is a fraction a term? If it's not a term, why is it that we can apply the distributive property to it? the distributive property only works for either terms, or addition and subtraction. a fraction is technically division, so why does it work? Please help!!!!!
No, a fraction is not a term. The distributive property can be applied to fractions because it is a general mathematical principle.
A fraction is not considered a term in the traditional sense. It is a mathematical expression that represents division. However, the distributive property can still be applied to fractions because the property itself is a fundamental rule of arithmetic that extends beyond specific types of expressions.
The distributive property states that for any real numbers a, b, and c:
a × (b + c) = (a × b) + (a × c).
When working with fractions, we can apply the distributive property as follows:
Let's consider the expression: a × (b/c).
We can rewrite this as: (a × b)/c.
Now, let's distribute the 'a' to 'b' and 'c':
(a × b)/c = (a/c) × b.
In this step, we applied the distributive property to the fraction (a/c) by treating it as a whole.
Although fractions represent division, we can still use the distributive property because it is a general mathematical principle that allows for manipulating expressions involving addition, subtraction, multiplication, and division.
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The weights for a group of 18-month- old girls are normally distributed with a mean of 24.5 pounds and a standard deviation of 2.8 pounds. Use the given table to find the percentage of 18 -month-old girls who weigh more than 27.3 pounds. _ % of 18-month-old girls in the sample weigh more than 27.3 pounds.
Remember that
z =(x - μ)/σ
where
μ=24.5 pounds
σ=2.8 pounds
so
For x=27.3 pounds
Find out the value of z
z=(27.3-24.5)/2.8
z=1
Looking at the given tables
The probability is equal to (100-84.13)=15.87
therefore
The answer is 15.87%the data below represents the number of t-shirts sold per week by a student who started his own online t-shirt business. find the weighted mean of the number of t-shirts sold per week. (round your answer to the nearest tenth if necessary.) t-shirts sold per week frequency 4 7 8 5 12 4 16 1 weighted mean
The weighted weekly mean of t-shirt sales is 5.6.
The total number of weeks reported is the sum of the frequency column.
1+4+7+3 = 15 weeks
The total number of t-shirts sold is calculated as the product of the quantity of t-shirts sold and the number of weeks during which those t-shirts were sold.
2*1 + 4*4 + 6*7 + 8*3 = 2 + 16 + 42 + 24 = 84
The weighted mean, which is the product of the total quantity of t-shirts and the total number of weeks, represents the average number of T-shirts sold every week:
84/15 = 5.6
Response: 5.6
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Select all correct ways of factoring
−4x − 12.
Answer:
-4(x+3)
Step-by-step explanation:
Answer:
4(3−x)
Step-by-step explanation:
−4x+12
Factor out 4.
4(−x+3)
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer:
D
Step-by-step explanation:
Answer:
the answer is d
Step-by-step explanation:
we can use point-slope form to find this answer.
first, make this equation
y-y 1=m(x-x1)
y-4=-6(x-1)
m=-6 because you can use slope intercept form to find the slope (as the name states lol)
then just distribute!!
y-4=-6x+6
add four to both sides
y=-6x+10
whoops, i did a little too much the answer is in bold!!!
good luck!! hope this helped! <3
 find the area of the shaded region leave your answer in terms of pi and in simplified radical form 
The area of the shaded part is 463.4π cm²
What is area of shaded part?The area of a shape is the space occupied by the boundary of a plane figures like circles, rectangles, and triangles.
The area of the shaded part = area of circle - area of segment.
Area of circle = πr²
= 3.14 × 24²
= 576π cm²
Area of segment = area of sector - area of triangle
Area of sector = 120/360 × 576π
=576π/3
= 192πcm²
Area of triangle = 1/2absinC
= 1/2 × 24² sin120
= 249.42
= 79.4π cm²
Area of segment = 192π- 79.4π
= 112.6π
Area of the shaded part = 576π -112.6π
= 463.4 π
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Simplify the expression 7h + (-8.1d) - 17 +5d - 3.7h.
Answer:
3.3h-3.1d-17
Step-by-step explanation:
1. Which is an example of categorical data?A eye colorB ageC weight
Age and you can also use weight too
you can easily group people by their age and weight but not by eye color
example
age people
5 - 10 14
10 - 15 5
the table above shows that we have 14 people within the range of 5 to 10 years
and likewise the weight of the people can serve the same purpose
Megan can type 84 words in 2 minutes. How long would it take him to
type a 420 word essay?
Answer:
If Megan can type 84 words in 2 minutes, he can type 42 words in 1 minute. Therefore, it would take Megan 10 minutes to type a 420 word essay.
It takes Megan 10 minutes to type the 420 word essay.
Given that Megan takes 2 minutes to type 84 words.
To find out how many words Megan types in 1 minute, we can divide the 84 words by 2 minutes = \(\frac{84}{2}\) = 42
From the above line, we know that Megan types 42 words in 1 minute. Now, to find out the time taken for Megan to type a 420 word essay, we can divide the 420 by 42 to obtain the time in minutes.
So, time taken = \(\frac{420}{42}\) = 10 minutes.
From the above explanation, we can conclude that Megan can type 420 word essay in 10 minutes.
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A. 7n+2 = 4n+17
B. 10-d = -34-5d
C. 8(x-1)-2x = -(x+50)
D. 80-3k = 5k+8
E. 3(2x+3)-x = x-23
F. 12(y+5) = 13y+58
G. 6(x-1) = 9(x-4)
H. 4(w-6) = 3(w+1)
I. 3+2(8-k) = 3k-1
J. 9m = 4m-35
K. 7-6u = 5u+29
L. 8y-3 = 16-(1-2y)
this is an answer worth answering cuz youll get like 40 points or 80
Answer:
a)n=5
b)d=-11
c)x=-6
d)k=9
e)x=-8
f)y=2
g)x=10
h)w=27
i)k=4
j)m=-7
k)u=-2
l)y=3
Suppose () = 46%; ( and ) = 10%; and ( or ) = 62% Find (Not ). Can this really be a probability? If not, explain why not.
Answer:
\(P(E) = 26 \%\)
Step-by-step explanation:
Given
\(P(F) = 46\%\)
\(P(E\ and\ F) = 10\%\)
\(P(E\ or\ F) = 62\%\)
Required
Find P(E)
In probability:
\(P(E\ and\ F) = P(E) + P(F) - p(E\ or\ F)\)
Substitute the right values
\(10\% = P(E) + 46\% - 62\%\)
\(10\% = P(E) -16 \%\)
Collect Like Terms
\(P(E) = 10\% +16 \%\)
\(P(E) = 26 \%\)
It is a probability because all probabilities are within the range 0 to 100%
hello please help I dont know how to do this
Answer:
3/1 aka 3 :) also cute izuku pfp!!!!
Step-by-step explanation:
pls solve this as soon as possible
Answer:
x³ - y³ = 0
Step-by-step explanation:
Given : \(\frac{x}{y}+\frac{y}{x}=-1\)
To Find : value of (x³ - y³)
Since, \(\frac{x}{y}+\frac{y}{x}=-1\)
\(\frac{x^2+y^2}{xy}=-1\)
x² + y² = -xy
x² + y² + xy = 0 -----(1)
Since, x³ - y³ = (x - y)(x² + xy + y²) [From the formula, (a³ - b³) = (a -b)(a²+ b² + ab)
= (x - y)(0) {From equation (1)]
= 0
Therefore, value of x³ - y³ = 0 will be the answer.
A line has a zero slope and passes through the point (4,-9). What is the equation of the line?
(No links please, just a simple answer)
keeping in mind that a line with a slope of "0" is a horizontal line, Check the picture below.
Help ASAP I’ll mark you as brainlister
Answer: It would be about 10 cents an ounce.
Step-by-step explanation:
1.25/12 = ~.10
the above task gives the mean completion time of each task (in days) and the standard deviation. based on this information, with 99% probability, in how many days will the project be completed?
To calculate the estimated project completion time with 99% probability, we can use statistical techniques such as the Central Limit Theorem and Z-scores.
By summing up the mean completion times of individual tasks and propagating the standard deviations, we can obtain an overall estimate. With a 99% probability, we can determine the range within which the project will be completed by applying the Z-score for a 99% confidence level.
Using the mean completion time and standard deviation for each task, we can apply statistical methods to estimate the project's completion time with 99% probability.
By considering the average completion time and the spread of task durations, we can calculate the range within which the project is likely to be completed.
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Cam can't figure out what to eat. He is going to randomly select a piece of fruit from his pantry. There are 444 apples and 555 bananas in his pantry.
What is \text{P(select an apple})P(select an apple)start text, P, left parenthesis, s, e, l, e, c, t, space, a, n, space, a, p, p, l, e, end text, right parenthesis?
If necessary, round your answer to 222 decimal places.
Answer:
0.45
Step-by-step explanation:
no. of outcomes = 4+5 = 9
favourable outcomes = 4
P(an apple) = 4/9
= 0.4444... or 0.45
For a triangle ABC , the length of AC and BC are given and is acute. Justify if it is possible to have BC<ACsin angle A
PLEASE EXPLAIN USING WORKING AND CALCULATIONS AND NOT AN EXAMPLE. Thank you in advance!
The required answer is a possible scenario where BC (c) is less than AC * sin(angle A)
To justify if it is possible to have BC < AC sin(angle A) for an acute triangle ABC, let's consider the sine formula for a triangle.
The sine formula for a triangle states that:
a/sin(A) = b/sin(B) = c/sin(C)
where a, b, and c are the lengths of the sides of the triangle, and A, B, and C are the angles opposite to those sides, respectively.
Now let's isolate side BC (b) in the equation:
b = c * sin(B) / sin(C)
Since triangle ABC is acute, all angles A, B, and C are less than 90°. Therefore, sin(B) and sin(C) will be positive values between 0 and 1.
Let's now compare BC (b) to ACsin(angle A):
b < AC * sin(A)
c * sin(B) / sin(C) < AC * sin(A)
We can rewrite the inequality in terms of angle C:
sin(B) / sin(C) < (AC * sin(A)) / c
Now let's recall that angle C is the angle opposite to side AC (c), and angle B is the angle opposite to side BC (b). Since sine is a positive increasing function for acute angles (0° to 90°), it follows that the sine of a larger angle will result in a larger value.
As angle C is opposite to the longer side (AC), angle C > angle B. Therefore, sin(C) > sin(B), and their reciprocals will have the opposite relationship:
1 / sin(C) < 1 / sin(B)
Now, let's multiply both sides of the inequality by c * sin(B):
c < AC * sin(A)
This inequality represents a possible scenario where BC (c) is less than AC * sin(angle A), justifying the initial claim. So, yes, it is possible to have BC < AC sin(angle A) for an acute triangle ABC.
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