Answer:
22.73% possibility that both of the scoops are ice cream
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order of the scoops is not important. So we use the combinations formula to solve this question.
Combinations formula:
\(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
What is the possibility that both of the scoops are ice cream?
Desired outcomes:
2 scoops of ice cream(set of 6). So
\(D = C_{6,2} = \frac{6!}{2!4!} = 15\)
Total outcomes:
2 scoops from a set of 6 + 6 = 12. So
\(T = C_{12,2} = \frac{12!}{2!10!} = 66\)
Probability:
\(p = \frac{D}{T} = \frac{15}{66} = 0.2273\)
22.73% possibility that both of the scoops are ice cream
1. Sebastian lived in France and Canada for a total of 21 months in order to learn French. He learned an average of
150 words per month when he lived in France, and an average of 210 words per month when he lived in Canada. In
total he leamed a total of 3,450 new words.
How long did Sebastian live in France? How Long did he Live in Canada?
Answer:
Step-by-step explanation:
He took 21 months in total.
150 per month in France and 210 per month in Canada
So, He learned in France in 10 months and canada in 11 months
Find the area of the figure. (Sides meet at right angles.)
Answer:
48m^2
Step-by-step explanation:
Split the figure into two separate ones and add them together at the end: see image for explanation
A quadratic equation, y = ax^2 - 6x + 10, has exactly one real root. Calculate the value of a.
Answer:
a = 0.9
Step-by-step explanation:
For the quadratic equation \(\boxed{ax^2 + bx + c = 0}\) to have exactly one real root, the value of its discriminant, \(\boxed{b^2 - 4ac}\), must be zero.
For the given equation:
\(y = ax^2 - 6x + 10\),
• a = a
• b = -6
• c = 10.
Substituting these values into the formula for discriminant, we get:
\((-6)^2 - 4(a)(10) = 0\)
⇒ \(36 - 40a = 0\)
⇒ \(36 = 40a\)
⇒ \(a = \frac{36}{40}\)
⇒ \(a = \bf 0.9\)
Therefore the value of a is 0.9 when the given quadratic has exactly one root.
Determine the parent function
Y=x3. Y=^x. Y=1/x
Answer:
First one is B
Second one is A
next time dont shoot your computer
Step-by-step explanation:
The parent function of the graph is y = √x
How to determine the parent function?The given graph is a graph of a square root function, that is translated upward by 3 units and right by 1 unit
This means that the equation of the graph is:
y = 3 + √(x - 1)
Remove the translated points
y = √x
Hence, the parent function of the graph is y = √x
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Find the diameter d of the circle in the figure at the right. Round to the nearest tenth if necessary.
what is the value of expression 3/7 divide by 3/4
A 1/2
B 9/14
C 4/7
D 46/21 i have two mins left please help
Answer:
You're answer is 4/7
Step-by-step explanation:
I hope this helps!
A person is standing close to the edge on a 56 foot building and throws the ball vertically upward. The quadratic function h(t)=-16^2+104t+56 models the balls height above the ground,h(t),in feet, T seconds after it was thrown
what is the maximum height of ball.=
How many seconds did it take to hit the ground=
Please help!
Answer:
Part 1)
225 feet.
Part 2)
7 seconds.
Step-by-step explanation:
The height h(t) of the ball above the ground after t seconds is modeled by the function:
\(h(t)=-16t^2+104t+56\)
Part 1)
We want to determine the maximum height of the ball.
Notice that the function is a quadratic with a negative leading coefficient, so its maximum will be at its vertex point.
The vertex of a parabola is given by:
\(\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)\)
In this case, a = -16, b = 104, and c = 56.
Find the x- (or rather t-) coordinate of the vertex. So:
\(\displaystyle t=-\frac{(104)}{2(-16)}=\frac{104}{32}=\frac{13}{4}=3.25\text{ seconds}\)
In other words, the ball reaches its maximum height after 3.25 seconds.
To find the maximum height, substitute this value back into the function. Hence:
\(\displaystyle h(3.25)=-16(3.25)^2+104(3.25)+56=225\text{ feet}\)
The maximum height of the ball is 225 feet in the air.
Part 2)
We want to find the amount of time it took for the ball to hit the ground.
When the ball hit the ground, its height above the ground is zero. Therefore, we can set h(t) to 0 and solve for t:
\(0=-16t^2+104t+56\)
We can simplify a bit. Divide both sides by -8:
\(0=2t^2-13t-7\)
We can factor. Find two numbers that multiply to 2(-7) = -14 and add to -13.
-14 and 1 works! Therefore, split the second term into -14 and 1:
\(\displaystyle 0=2t^2-14t+t-7\)
Factor out a 2t from the first two terms and group the last two terms:
\(0=2t(t-7)+(t-7)\)
Factor by grouping:
\(0=(2t+1)(t-7)\)
Zero Product Property:
\(2t+1=0\text{ or } t-7=0\)
Solve for each case:
\(\displaystyle t=-0.5\text{ or } t=7\)
Since time cannot be negative, we can ignore the first case.
Therefore, it takes seven seconds for the ball to hit the ground.
15 POINTS!!! ANSWERS NEEDED ASAP!!!!
what is the y intercept when the coordinate is -3,-3 and the slope is -1
The y-intercept is -6, when the coordinate is -3,-3 and the slope is -1
Describe Slope?More specifically, it is defined as the ratio of the change in the y-coordinate (vertical) to the change in the x-coordinate (horizontal) between any two points on the line or surface.
The slope of a line is often denoted by the letter "m" and can be calculated using the formula:
m = (y2 - y1)/(x2 - x1)
where (x1, y1) and (x2, y2) are two points on the line.
A positive slope indicates that the line is rising from left to right, while a negative slope indicates that the line is falling from left to right. A slope of zero indicates that the line is horizontal.
The slope of a surface can be calculated using partial derivatives. The slope of a surface at a point is the slope of the tangent plane at that point.
Slope is an important concept in mathematics, physics, and engineering, and is used to calculate rates of change, velocities, and accelerations, and to model relationships between variables. It is also used in a variety of practical applications, such as in construction and surveying, where it is necessary to determine the slope of the land.
To find the equation of the line when the coordinate is (-3, -3) and the slope is -1, we can use the point-slope form of the equation of a line:
y - y1 = m(x - x1)
where m is the slope, and (x1, y1) is the given point. Plugging in the values, we get:
y - (-3) = -1(x - (-3))
y + 3 = -x - 3
y = -x - 6
The y-intercept is the point where the line intersects the y-axis, which occurs when x = 0. Plugging in x = 0 into the equation, we get:
y = -0 - 6
y = -6
Therefore, the y-intercept is -6.
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7 5/7 as a decimal please help
Answer:
the answer was 7.71
Step-by-step explanation:
hope this helps
A fraction is usually split into two parts: the first part is the number on top, called the numerator; and the second part is the number on the bottom, called the denominator. These are both separated by a line called the “divisor line”. We can use the division method help to solve this question: to get a decimal, simply divide the numerator 54 by the denominator 7 (which you can enter in any calculator):
54 (numerator) ÷ 7 (denominator) = 7.71
And finally, you get 7.71 as your answer when you convert 7 5/7 (or 54/7) to a decimal.
Answer:
7.71
Step-by-step explanation:
1)
Find the value of x in
the triangle below:
17
A) 20.2
B) 18.7
C) 19.5
D) 21.1
E) 22.6
K
84⁰
65°
Mrs. Wilson
Mrs. Crane
Mr. Haynes
Ms. Lindstrom
Mr. Swasey
O Gina Wilson (All Things Algebra), 2014
The correct option is A) 20.2.
What is triangle sum?
The triangle sum is a property of triangles that states that the sum of the interior angles of a triangle is always equal to 180 degrees. In other words, if you add up the measures of the three angles inside a triangle, the result will always be 180 degrees.
Using the given information and the fact that the angles in a triangle sum to 180 degrees, we can find the value of x as follows:
Start by finding the measure of angle K by subtracting the measures of angles A and B from 180 degrees:
K = 180 - A - B
= 180 - 84 - 65
= 31 degrees
Use the law of sines to set up an equation relating the side lengths and corresponding angle measures:
sin(A)/x = sin(K)/17
Substitute the values we know into the equation and solve for x:
sin(84)/x = sin(31)/17
x = sin(84)*17/sin(31)
Using a calculator, we get:
x ≈ 20.2
Therefore, the value of x in the triangle is approximately 20.2.
So, the correct option is A) 20.2.
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How many times did the team score less than 60 points?
Stem
4
5
6
7
Leaf
2,5,9
3,4,6,8,8,9
0,2,3,4,4,6,8
0,0,1,2
The average of 12, 25 , 33 , and N is 120. Find N.
Answer:
So the formula for mean is you add up all of the numbers and divide by the number of numbers, that will give you the mean/average. So that means that (12+25+33+N)/4 = 120. We can simplify by first adding all of the numbers and multiplying both sides by 4 which will cancel out the four on the right side.
70+N/4 = 120
480 = 70+N
So then we subtract 70 from both sides. Then we get 410 = N.
The answer is
410 is AnswerThe table shows the number of books, by type, checked out from the school library on Monday.
Book Checkout
Book Type Number of Books
mystery
24
nonfiction
18
adventure
12
humor
16
Part A: Which statement is true?
O For every 3 mystery books checked out, 4 nonfiction books were checked out.
O For every 3 mystery books checked out, 6 nonfiction books were checked out.
O For every 4 mystery books checked out, 3 nonfiction books were checked out.
O For every 6 mystery books checked out, 3 nonfiction books were checked out.
The statement i.e. true is For every 4 mystery books checked out, 3 nonfiction books are checked out.
Calculation of the ratio:Here first determine the ratio of nonfiction books to mystery books
So, it should be like
= 18:24
= 6:8
= 3:4
So based on the above calculations we can say that The statement i.e. true is For every 4 mystery books checked out, 3 nonfiction books are checked out.
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Hatif has $150 in his account. He saves $80 each month. How long will it take before he has $630 in his account?
Answer:
6 months
Step-by-step explanation:
We can set up an equation based on his monthly savings to find out how long it will take for Hatif to reach $630 in his account.
Let's assume it takes Hatif "n" months to reach $630 in his account. Each month, he saves $80.
The equation representing the situation is:
$150 + $80n = $630
Now, let's solve for "n":
$80n = $630 - $150
$80n = $480
n = $480 / $80
n = 6
Therefore, it will take Hatif 6 months to reach $630 in his account.
Match the following terms
Answer:
1.) Feeds on dead organisms – Decomposer
2.)obtain energy nutrients from producers – Consumer
3.)Network of interconnected food chains – Food web
4.)Manufactures food using energy from the sun – Producer
5.)Simple model used for showing how energy passes through an ecosystem – Food chain
6.) Relationship between organisms where both members benefit – Mutualism
Step-by-step explanation:
pls if this answer helped you kindly rate it as brainliest
Write 2/8 in lowest terms.
Answer: 1/4
Step-by-step explanation:
2 divided by 2 is 1 and 8 divided by 2 is 4 so 1/4
Answer: 1/4
Step-by-step explanation: We can simplify by divideing both the numerator and the denominator by 2. That will leave us with the answer of 1/4.
a car travels at a rate of 120 kilometer per hour if 1 mile equals 1.6 kilometer which equation could be used to find the number of miles the car travels per hour ?
Answer:
75
Step-by-step explanation:
120 ÷ 1.6 = 75 since 1.6 kilometer per hour is 1 mile, the car travels 75 miles per hours
Answer:
The car travels 75 miles per hour
Step-by-step explanation:
Units of Length
The most common units of distance are millimeters, centimeters, meters, miles, and kilometers.
The equivalence from miles to kilometers is:
1 mile = 1.6 Kilometers
If we wanted to convert a given distance from kilometers to miles, we'd need to divide by 1.6, that is:
d(miles) = d(km)/1.6
The above equation can be used to find the number of miles given the number of kilometers.
If a car travels at 120 kilometers per hour, then in one hour it travels
d(km)=120
Thus, the distance in miles is:
d(miles) = 120/1.6 = 75
The car travels 75 miles per hour
n is an integer with -5 <2n< 6
Write down all the values of n
Answer:
it is -2,-1,0,1,2
what is 2247 divided by 7
and 8
Step-by-step explanation:
and and and and and and and and and 8
(12sin(pi/2x)*lnx)/((x³+5)(x-1))
lim as x approaches 1
The limit of the given function as x approaches 1 is 0.
To find the limit of the given function as x approaches 1, we need to evaluate the expression by substituting x = 1. Let's break it down step by step:
1. Begin by substituting x = 1 into the numerator:
\(\[12\sin\left(\frac{\pi}{2}\cdot 1\right)\ln(1) = 12\sin\left(\frac{\pi}{2}\right)\ln(1) = 12(1)\cdot 0 = 0\]\)
2. Now, substitute x = 1 into the denominator:
(1³ + 5)(1 - 1) = 6(0) = 0
3. Finally, divide the numerator by the denominator:
0/0
The result is an indeterminate form of 0/0, which means further analysis is required to determine the limit. To evaluate this limit, we can apply L'Hôpital's rule, which states that if we have an indeterminate form 0/0, we can take the derivative of the numerator and denominator and then evaluate the limit again. Applying L'Hôpital's rule:
4. Take the derivative of the numerator:
\(\[\frac{d}{dx}\left(12\sin\left(\frac{\pi}{2}x\right)\ln(x)\right) = 12\left(\cos\left(\frac{\pi}{2}x\right) \cdot \left(\frac{\pi}{2}\right) \cdot \frac{-1}{x} + \frac{\sin\left(\frac{\pi}{2}x\right)\ln(x)}{x}\right)\]\)
5. Take the derivative of the denominator:
\(\[\frac{d}{dx}\left((x^3 + 5)(x - 1)\right) = \frac{d}{dx}\left(x^4 - x^3 + 5x - 5\right) = 4x^3 - 3x^2 + 5\]\)
6. Substitute x = 1 into the derivatives:
Numerator: \(\[12\left(\cos\left(\frac{\pi}{2}\right) \cdot \left(\frac{\pi}{2}\right) \cdot \frac{-1}{1} + \sin\left(\frac{\pi}{2}\right) \cdot \frac{\ln(1)}{1}\right) = 0\]\)
Denominator: 4(1)³ - 3(1)² + 5 = 4 - 3 + 5 = 6
7. Now, reevaluate the limit using the derivatives:
lim as x approaches 1 of \(\[\frac{{12\left(\cos\left(\frac{\pi}{2}x\right) \cdot \left(\frac{\pi}{2}\right) \cdot \frac{{-1}}{{x}} + \sin\left(\frac{\pi}{2}x\right) \cdot \frac{{\ln(x)}}{{x}}\right)}}{{4x^3 - 3x^2 + 5}}\]\)
= 0 / 6
= 0
Therefore, the limit of the given function as x approaches 1 is 0.
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Write an equation that is parallel to the line y=3x-5 and passes through the point (-1,2)
find f(g(1)) if f(x)=4x and g(x)=2x+5
Evaluating the composition of functions in x = 1 gives:
f(g(1)) = 28
How to find the composition of functions?Here we have the two functions:
f(x) = 4x
g(x) = 2x + 5
And we want to find to find the composition f(g(x)), we will get:
f(g(x)) = 4*g(x)
Replacing g(x) there we will get:
f(g(x)) = 4*(2x + 5)
= 8x + 20
Now we can evaluate that in x = 1, then we will get:
f(g(1)) = 8*1 + 20 = 28
That is what we wanted to find.
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Supposed that the mean systolic blood pressure for women I’ve age seventy is 131mmHg ( millimeters of mercury), with a standard deviation of 9 mmHg. Supposed that the blood pressure are normally distributed. Complete the following statements ( choose correct answers 68%,75%,95%,99.7%)
To answer the question, having a z-table with you will help. We can also use the 68-95-99.7 rule.
The rule states that 68.27% of a normally distributed data set is within one standard deviation of the mean, 95.45% is within two standard deviations, and 99.73% is with three standard deviations.
Given that the mean is 131 mmHg and the standard deviation is 9 mmHg, we can calculate the boundaries which are 3 standard deviations away from the mean by adding and subtracting three times the standard deviation.
\(\begin{gathered} 131-(3\times9)=104 \\ \\ 131+(3\times9)=158 \end{gathered}\)Therefore, approximately 99.7% of women over seventy have blood pressures between 104 mmHg and 158 mmHg.
Now let's find out how many standard deviations away 122 mmHg and 140 mmHg are from the mean.
\(\begin{gathered} z=\frac{122-131}{9}=-1 \\ \\ z=\frac{140-131}{9}=1 \end{gathered}\)122 and 140 mmHg are within 1 standard deviation of the mean. Using the 68-95-99.7 rule, we know that approximately 68.27% of women over seventy have blood pressures between 122 mmHg and 140 mmHg.
Order and Operate
2(x + 6) – 4 + x
PLEASE HELP ASAP
Answer:
3x+8
Step-by-step explanation:
PEMDAS
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
2(x +6)-4 +x
2x+12 (distributive property)
2x+12-4+x
3x+8
Hope this helps :)
Answer:
3x+12
Step-by-step explanation:
Follow the PEMDAS/GEMDAS order. First, distribute the 2 to the numbers in the parenthesis:
2(x+6)-4+x
↓
2x+16-4+x
Then, subtract the numbers without a variable (the numbers without x):
2x+16-4+x
↓
2x+12+x
Then, add the variables together (the numbers with x):
2x+12+x
↓
3x+12
Hope this is the answer you need.
A U.S. Senator from Indiana wanted to know what all her constituents thought about the Clean Air Act that was coming up for a vote in the Senate. She sent a letter to a sample of 257 Indiana voters asking them if they supported the Clean Air Act even if it meant they would have to pay higher prices for gasoline. The results indicated that 39% of the sample supported the Clean Air Act, even if it meant higher gasoline prices. The sample of Indiana voters was intended to represent all Indiana voters; therefore, the value of 39% would be called __________.
Answer:
The value of 39% would be called parameter.
Step-by-step explanation:
When a percentage refers to a sample, it is called a statistic.
When it refers to a population, it is called a parameter.
The sample of Indiana voters was intended to represent all Indiana voters;
This means that the percentage will be used with the following meaning:
"39% of all Indiana voters ..."
That is, referring to the entire population(in this case, all Indiana voters), so would be a parameter.
Aleks topic please help
Answer:
Item price now= 3.95
Step-by-step explanation:
To find out the price now, we will subtract 79 (original price) by 95% of 75. That will equal the discounted price. Finding the percentage of anything, we can use the formula, Total amount•percentage/100. The total amount is 79, and the percentage is 95. 79•95=7505, 7505/100=75.05. Now, 95% of 79 is 75.05, 79-75.05=3.95. $3.95 is the price now of the item. Though, I am unsure what a ALEKS calculator is. Have a nuce time, and joyful day
The sum of two numbers is 96 the larger number is nine less than four times the smaller number find both numbers
Answer:
21 and 96
Step-by-step explanation:
Let x and y be the two numbers such that x>y.
As the sum of both the numbers is 96.
x+y=96...(i)
As the larger number is nine less than four times the smaller number,
So, x=4y-9
From equation (i),
4y-9+y=96
5y=96+9=105
So, y=105/5=21
By using equation (i),
x=96-y=96-21=75
Hence, both the numbers are 21 and 96.
Who cares about your credit history?
A:Credit card companies
B: Insurance companies
C: Banks
D: All of the above
Isabelle brought 14 boxes of Girl Scout cookies and 34 small bags filled with homemade cookies to sell at work. Find theprobability that someone will buy the homemade cookies. Convert the fraction to a decimal. Round to three decimal places.
14 boxes of girl scout cookies
34 small bags of homemade cookies
Total = 34+14 = 48
P ( homemade cookies ) = homemade cookies / total = 34 / 48 = 0.708
Could someone tell me the answers to 19,20 please
Answer:
Step-by-step explanation:
SORRY ABOUT THE REST OF THE WORKSHEET, THEY ARE SUPPOSED TO ADD UP TO 180 not 90
19.
8x - 16 = 6x + 20
2x = 36
x = 18
M = 8(18) - 16 = 128
N = 128
O = 52
P = 52
20.
21x - 9 = 180
21x = 189
x = 9
W = 110
X = 110
Y = 70
Z = 70