Answer:
Number of students in each van = 18
Number of students in each bus = 53
Step-by-step explanation:
Given: The senior class at High School A rented and filled 2 vans and 7 buses with 407 students.
High School B rented and filled 1 van and 7 buses with 389 students.
Also, every van and the van had the same number of students in it.
Solution:
Let x denotes number of students in each van and y denotes number of students in each bus.
According to the given information,
\(2x+7y=407\,\,\,(i)\\x+7y=389\,\,\, (ii)\)
From (ii), put \(x=389-7y\) in (i)
\(2(389-7y)+7y=407\)
\(778-14y+7y=407\\778-407=7y\\7y=371\\y=\frac{371}{7}=53\)
Put \(y=53\) in \(x=389-7y\)
\(x=389-7(53)\\=389-371\\=18\)
Number of students in each van = 18
Number of students in each bus = 53
Help please...
15 points and brainliest if right
Answer:
I belive it is the second one
Step-by-step explanation:
Answer:
B. The second box plot
Step-by-step explanation:
Min: 9.1Lower Quartile: 9.2Median: 9.4Upper Quartile: 9.7Max: 9.8For the data in the table, does y vary directly with x? If it does, write variation, 1. X 2 y 18 36 54 4 6 a. no; y does not vary directly with x c. yes; y = 4.5x d. yes; y = 9x b. yes; y = 18x
The answer is (a) no; y does not vary directly with x.
Find whether y varies directly with x?To determine whether y varies directly with x, we need to check if the ratio of y to x is constant. That is, if we divide any y value by its corresponding x value, we should get the same result for all pairs of values. Let's calculate these ratios for the given data:
For x = 18, y/x = 36/18 = 2
For x = 54, y/x = a/54
For x = 2, y/x = 6/2 = 3
Since the ratio of y to x is not constant, we can conclude that y does not vary directly with x. Therefore, the answer is (a) no; y does not vary directly with x.
Note that if y did vary directly with x, we would expect the ratio of y to x to be constant for all pairs of values. In that case, we could write an equation of the form y = kx, where k is the constant of variation. However, since the ratio of y to x is not constant in this case, we cannot write such an equation.
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quick whats 40 plus 60
Answer:100
Step-by-step explanation:
Answer:
100
Step-by-step explanation:
Help on this please I’d appreciate it
Answer:
The \(y\)-intercept is \(\boxed{3}\)
Step-by-step explanation:
The \(y\)-intercept of line is just the point where the \(y\)-axis and the line. From the given line, we can see that the \(y\)-axis and the line that models the temperature on a certain winter day since sunrise \((0,3)\). Also, the question just asked us for the \(y\)-coordinate of the \(y\)-intercept so \(3\)
This is to get easy points but to also be kind
If Carmen drives 17.5 miles to a grocery store and 17.5 miles back then can’t find what she needs so she drive 12.5 miles to a gas station and 12.5 back how many miles did she drive.
I will be giving points out for being on this app so be on the lookout
Answer:
60 miles
Step-by-step explanation:
Distance travelled :
2 x Distance to grocery + 2 x Distance to gas station2(17.5) + 2(12.5)35 + 2560 milesamelia sells jewelry. she earns 12% commission on her sales , and a weekly salary of 550. how much did amelia earn this month if she sold 22,540 worth of jewelry?
Answer:
$27,444.80
Step-by-step explanation:
12% of 22,540 is 2,704.8
add the amount she made
add the weekly salary (550 × 4)
is -2 a solution for 7x+3=-17-3x ?
Answer:
yes -2 is the correct answer
Step-by-step explanation:
7x+3=-17-3x
7x+3x=-17-3
10x=-20
x=-20/10
x=-2
Answer:
\(\boxed{\bold{\huge{\boxed{\sf Yes.}}}}\)
Step-by-step explanation:
=> \(\sf 7x+ 3 = -17-3x\)
Combining like terms
=> \(\sf 7x+ 3x = -17-3\)
=> \(\sf 10x = -20\)
Dividing both sides by 10
=> \(\sf x = -2\)
So, -2 is a solution of the given equation.
Select all the sets of conditions that will create only one unique triangle.
For incoming freshman at BYU, ACT scores are Normally distributed with a mean of 28 and a standard deviation of 2. How many standard deviations away from the mean is an ACT score of 31?
Answer:
To calculate how many standard deviations away from the mean an ACT score of 31 is, we need to use the formula:
z = (x - μ) / σ
Where:
x = ACT score of 31
μ = mean of ACT scores (28)
σ = standard deviation of ACT scores (2)
z = number of standard deviations away from the mean
Substituting the values, we get:
z = (31 - 28) / 2
z = 1.5
Therefore, an ACT score of 31 is 1.5 standard deviations away from the mean.
On Monday, the balance in your checking account is -$149. The bank charges you a $15 fee for having a negative balance. The next day you make two deposits of $117 and $59. What is your new balance?
After making the deposits, your new balance will be $12
Find the value of (f g)' at the given value of x. = лX, X = 7 f(u) = -u, u = g(x) = - u, u = g(x) cos u OA) 7T B) -7R OC) -π OD) 4-T
The value of the function (f ∘ g)' at x = 7 is approximately -0.656.
Option C is the correct answer.
We have,
To find the value of the derivative of the composite function (f ∘ g)' at
x = 7, we need to evaluate the derivative of f(g(x)) and then
substitute x = 7.
Given:
f(u) = -u
g(x) = -cos(x)
First, we find the derivative of f(g(x)):
(f ∘ g)'(x) = f'(g(x)) * g'(x)
Since f(u) = -u, the derivative of f(u) is f'(u) = -1.
The derivative of g(x) = -cos(x) is g'(x) = sin(x) (using the chain rule).
Now, we can evaluate the derivative at x = 7:
(f ∘ g)'(7) = f'(g(7)) x g'(7)
= f'(-cos(7)) x sin(7)
= -1 x sin(7)
= -sin(7)
Therefore,
The value of the function (f ∘ g)' at x = 7 is approximately -0.656.
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The complete question:
Find the value of the derivative of the composite function (f ∘ g)' at x = 7, where f(u) = -u and g(x) = -cos(x).
A) 7π
B) -7π
C) -0.656.
D) 4π
Help me this math I suck at
Answer:
x=-1
Step-by-step explanation:
Step 1- Add 9 to both sides of the equation.
New equation:
3x=-12
Step 2- divide by 3 on both sides of the equal sign to get your answer.
x=-1
Answer:
x = 1
Step-by-step explanation:
This is the answer because:
1) If x equals 1, then -3 x 1 equals -3
2) -3 - 9 = -12 (this is the answer because whenever there are two of the same signs, - and -, you have to multiply the signs, so - times - is equal to a +, therefore the equation will change into 3+9 which equals 12. Once you have 12, put the sign that the bigger number has. 9 has a minus sign in front of it which makes the +12 turn into -12)
Hope this helps! :D
many academic institutions offer a sabbatical policy. every seven years a professor is given a year free of teaching and other administrative responsibilities at full pay. for a professor earning $70,000 per year who works for a total of 42 years, what is the present value of the amount she will earn while on sabbatical if t
Present value of the amount she will earn while on sabbatical if the interest rate is 6% is $126,964.34
The value of money reduces as time passes, this is due to the interest factor. $1 is worth more today than tomorrow this is because of the time value of money. The present value of cash flows is discounted value of future cash flows. Discount factors at a given rate of interest are used to find out the present value of cash flows.
Here, the professor will receive $70,000 every 7 years for 42 years.
Hence he will receive $70,000 sabbatical in the 7th, 14th,21st,28th,35th, and 42nd years.
We will find the present value of such receipts and add them.
R=0.06
F=$70,000
\(Present~Value = \displaystyle\frac{FV}{(1+r)^7}+\frac{FV}{(1+r)^{14}}+\frac{FV}{(1+r)^{21}}+\frac{FV}{(1+r)^{28}}+\frac{FV}{(1+r)^{35}}+\frac{FV}{(1+r)^{42}}\)
\(Present~Value = \displaystyle\frac{70,000}{(1.06)^7}+\frac{70,000}{(1.06)^{14}}+\frac{70,000}{(1.06)^{21}}+\frac{70,000}{(1.06)^{28}}+\frac{70,000}{(1.06)^{35}}+\frac{70,000}{(1.06)^{42}}\)
=$126,964.34
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Which is true about the polynomial y2 – 3y + 12?It is a binomial with a degree of 2.It is a binomial with a degree of 3.It is a trinomial with a degree of 2.It is a trinomial with a degree of 3.
y^2 - 3y + 12 is a trinomial with a degree of 2, also known as a quadratic trinomial.
The given polynomial y^2 - 3y + 12 is a trinomial with a degree of 2. A polynomial is a mathematical expression that contains one or more terms involving variables and coefficients. In this case, there are three terms: y^2, -3y, and 12. A binomial is a polynomial consisting of two terms, while a trinomial has three terms. Therefore, y^2 - 3y + 12 is a trinomial.
The degree of a polynomial is the highest exponent of the variable in the polynomial. In this case, the highest exponent of y is 2, so the degree of the polynomial is 2. This degree is also known as the quadratic degree.
It is important to identify the number of terms and degree of a polynomial when solving equations or simplifying expressions involving polynomials. Additionally, the properties of polynomials, such as factoring and graphing, are also influenced by these characteristics.
In summary, y^2 - 3y + 12 is a trinomial with a degree of 2, also known as a quadratic trinomial.
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Explain please I’m stuck
FYI - the length of the mid-segment of a trapezoid is equal to half the sum of the lengths of its bases.
the equation:
18 + 6x - 12 = 2(2x + 10)
18 + 6x - 12 = 4x + 20
6 + 6x = 4x + 20
6x = 4x + 14
2x = 14
x = 7
PLEASE HELP ME AS SOON AS POSSIBLE
The parent function of g(x) = |x - 7| +6 is f(x) = |x|
How to determine the parent function?The function is given as:
g(x) = |x - 7| +6
The above function is an absolute function, and the parent function is f(x) = |x|
Hence, the parent function of g(x) = |x - 7| +6 is f(x) = |x|
The reflectionWhen f(x) is reflected across the x-axis, we have:
f'(x) = -|x|
When f(x) is reflected across the y-axis, we have:
f'(x) = |x|
Stretching and CompressionWhen f(x) is stretched horizontally by a factor k
g'(x) = |kx|
When f(x) is stretched vertically by a factor k
g'(x) = k|x|
Horizontal ShiftWhen f(x) is shifted horizontally by k units
f'(x) = |x ± k|
Vertical ShiftWhen f(x) is shifted vertical by k units
f'(x) = |x| ± k
See attachment for the graph of g(x)
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Given a of n = -4+12(n-1), find the 60th term in the sequence
The 60th term in the arithmetic sequence when a of n = -4 + 12(n - 1) is 704.
Arithmetic progression-
The difference between any two consecutive integers in an arithmetic progression (AP) sequence of numbers is always the same amount.
Its alternate name is Arithmetic Sequence.
\(a_{n}\) = -4+12(n-1)
a₁ = -4 + 12(1 - 1)
a₁ = -4
a₂ = -4 + 12(2 - 1)
a₂ = -4 + 12(1)
a₂ = -4 + 12
a₂ = 8
common difference ,d is calculated as
d = a₂ - a₁
d = 8 - (- 4 )
d = 8 = 4
d = 12
the 60th term in the sequence is :
a₆₀ = a₁ + (60- 1)d
a₆₀ = -4 + 59 x 12
a₆₀ = -4 + 708
a₆₀ = 704.
The 60th term in the arithmetic sequence when a of n = -4 + 12(n - 1) is 704.
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The volume of a cube is given by V = x3 , where x is the length of an edge of the cube. The area of a square is given by A = x2 , where x is the length of a side of the square. A given cube has a volume of 1728 cubic inches.
**Explain how the information given can be used to calculate the surface area of the cube. Use specific details and domain specific vocabulary to construct a coherent response.**
Answer:
65
Step-by-step explanation:
you are tossing a pair of fair, six-sided dice in a board game. tosses are independent. you land in a danger zone that requires you to roll doubles (both faces showing the same number of spots) before you are allowed to play again. how long will you wait to play again?
The probability that you do not roll doubles on the first toss, but you do on the second toss = 13.89%.
How does probability work?Chance is the study of numerical representations of the probability that an event will occur or that a statement is true. The probability of an event is a number between 0 and 1, with 1 generally signifying certainty and 0 generally signifying impossibility.
According to the given data:The chances of rolling doubles are 6 out of 36.
The probability is equal to the number of likely outcomes divided by the total number of outcomes:
According to complement rule:
P( not A)=1−P(A)
Then we obtain:
P( not doubles) = 1 - (1/6)
= (5/6)
Using Multiplication rule:
P(A∩B)=P(A)×P(B)
Then we obtain:
P(Doubles on second toss) = P( not doubles)×P( doubles)
= (5/6) * (1/6)
= \(\frac{5}{36}\)
= 13.89%
The probability that you do not roll doubles on the first toss, but you do on the second toss = 13.89%.
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I understand that the question you are looking for is:
You are tossing a pair of fair, six-sided dice in a board game. Tosses are independent. You land in a danger zone that requires you to roll doubles (both faces showing the same number of spots) before you are allowed to play again. How long will you wait to play again? What is the probability that you do not roll doubles on the first toss, but you do on the second toss?
Plzzzzzzzzzzzz helpppppppppp
Answer:
B. The horizontal cross-sections of the prisms at the same height have the same area.
Step-by-step explanation:
Notice that the cone and the pyramid have the same volume. This is important.
This follows the Cavalieri's principle that, for the case of 3 dimensions, as the present case, it states, roughly, that if we have two bodies like the cone and the pyramid, and if we have parallel planes crossing each section, and we always have the same area, these two bodies have the same volume.
In this case, both, cone and pyramid have the same volume, then (reciprocally):
B. The horizontal cross-sections of the prisms at the same height have the same area.
Answer:
B. The horizontal cross-sections of the prisms at the same height have the same area.
Step-by-step explanation:
ap333x
Trapezoid ABCD is shown on the graph. If the trapezoid is rotated 90 degrees
counterclockwise about the origin and the resulting image is translated 6
units left, what are the coordinates of C"?
Answer:
The coordinates of C" are (-7, 4)
Step-by-step explanation:
If the point (x, y) rotated about the origin by angle 90° counterclockwise, then its image is (-y, x)If the point (x, y) translated horizontally to the left by h units, then its image is (x - h, y)From the given figure
∵ ABCD is a trapezoid
∵ The coordinates of the ponit C are (4, 1)
∴ x = 4 and y = 1
∵ The trapezoid is rotated 90 degrees counterclockwise about the origin
→ By using the 1st rule above, change the sigh of y and switch them
∴ C' = (-y, x)
∴ C' = (-1, 4)
∵ The resulting image is translated 6 units left
→ By using the 2nd rule above subtract the x-coordinate by 6
∴ C" = (x - h, y)
∵ h = 6
∵ x = -1 and y = 4
∴ C" = (-1 - 6, 4)
∴ C" = (-7, 4)
∴ The coordinates of C" are (-7, 4)
let f be the function defined by f(x)=x2 1x 1 with domain [0,[infinity]). the function f has no absolute maximum on its domain. why does this not contradict the extreme value theorem?
The function f(x) = x² - 1/x + 1, with domain [0, ∞), does not have an absolute maximum on its domain, but this does not contradict the extreme value theorem.
Determine the extreme value theorem?The extreme value theorem states that if a real-valued function f is continuous on a closed interval [a, b], then f must have both an absolute maximum and an absolute minimum on that interval.
However, the theorem does not apply to functions that have an open interval as their domain, such as f(x) = x² - 1/x + 1 with a domain of [0, ∞).
In this case, f(x) approaches infinity as x approaches 0, but it does not have a maximum value within the given domain. The lack of an absolute maximum for f(x) on [0, ∞) is consistent with the behavior of the function, and it does not violate the extreme value theorem since the domain is not a closed interval.
Therefore, the function f(x) = x² - 1/x + 1, defined on [0, ∞), lacks an absolute maximum, but this does not violate the extreme value theorem.
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Please help!!!!!!!! I will mark brainliest if right!!!! Explain
Answer:
They are not similar.
Step-by-step explanation:
The angles of a triangle add up to be 180°. If they were similar, the triangle angles would have to be 60°, 40°, and 80°. Because one of the angles is 81°, the triangles cannot be similar.
81° + 40° + 60° does not equal 180.
What is the volume of the prism below?
A. 56 units 3
B. 144 units
C. 288 units
D. 180 units
Answer:
C ,288Step-by-step explanation:
hope this helps40% of Damien‘s marbles are blue. Damien has three marbles how many of the marbles are not blue
40% of Damien’s marbles are 6/5 or 1.2.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given:
Damien has three marbles.
40% of Damien’s marbles are blue.
That means,
40% of 3 blue marbles.
So, using the percentage formula,
40% of 3,
= 40 x 3/100
= 120/100
= 12/10
= 6/5
= 1.2
Therefore, 1.2 marbles are blue.
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What will 2(x-4) simplify to?
Answer:
2x-8
Step-by-step explanation:
Answer:
2x-8
Step-by-step explanation:
If your doing distributive property then you multiply the 2 by the x and the 8 which will give you
2x-8
Someone help me asap please
Answer:
x-intercepts = (8, 0) and (-4, 0)
y- intercept = (0, 8)
vertex = (2, 9)
Step-by-step explanation:
Sorry if its wrong but I think it's where the coordinates are according to the graph. The x-int would hit at the x-axis, y-int would hit the y-axis, and the vertex would be where it's highest point is
A manufacturer tests a certain number of the headsets that are produced each day. if 280 units of that model are tested, and the manufacturer finds 273 headsets without any defects, what is the chance of finding a defective headset? round your answer to the nearest tenth.
Answer:
7/280 = 1/40 = .025 = 2.5%
please help me I'm not smart !!
The correct response is option 3 i.e n = 6.
What is a Sequence?
A sequence is a list of items arranged in a stepwise order, with members coming either before or after.
We know that,
aₙ = a₁ + (n-1)×d .............................(Arithmetic sequence formulae)
here,
aₙ = -13
a₁ = 7
d = -4
Substituting the values we get,
-13 = 7 + (n-1)×(-4)
∵ (-4)×(n-1) = -20
=> n-1 = 5
=> n = 6
Thus, the final value of n is 6.
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Can anyone answer this question for me. i need this immediately
Answer:
the second one
Step-by-step explanation:
05) is called alpha (α). If the probability (i.e., p-value) is less than alpha that we would obtain a sample mean this large or larger from the null population, we reject the null hypothesis and conclude that our sample was drawn from a different population with a sample mean larger than the null mean.