The diagonal of a square can be obtained by the Pythagorean theorem and is given by:
Diagonal = root (L ^ 2 + L ^ 2)
Where,
L: Sides of the squares
Clearing L, we have:
(Diagonal) ^ 2 = L ^ 2 + L ^ 2
(Diagonal) ^ 2 = 2L ^ 2
L ^ 2 = ((Diagonal) ^ 2) / 2
L = (((Diagonal) ^ 2) / 2) ^ (1/2)
Substituting
L = (((24) ^ 2) / 2) ^ (1/2) = 16.97
The side of the playground is 16.97m long
To find the velocity of flow (in feet per second, or fps) through a pipe, divide the rate of flow (in cubic feet per second, or cfs) by the cross-sectional area of the pipe (in square feet). If the rate of flow through an 6-in.-diameter pipe is 0.81 cfs, find the velocity of flow.
Based on flow velocity, 4.132 feet per second is the correct response to the question.
What is Velocity?A vector number called velocity is used to explain how quickly an object changes its position with respect to time. Its definition is that it is the displacement (change in position) of an object per unit of time, which takes into account both the magnitude (speed) and direction of the object's motion.
We must determine the pipe's cross-sectional area. The following formula provides the cross-sectional area of a pipe:
A = πr²
where r is the pipe's radius.
Since the pipe's diameter is specified as 6 inches, the radius may be determined as being equal to half of the diameter:
r = 6/2 = 3 inches
To translate this to feet:
r = 3/12 = 0.25 feet
Now we may apply the cross-sectional area formula:
A = πr² = π(0.25)² = 0.196 ft²
Next, we can use the formula for velocity of flow:
v = Q/A
where A is the pipe's cross-sectional area and Q represents the flow rate.
Inputting the values provided yields:
v = 0.81/0.196 = 4.132 fps
As a result, the 6-inch-diameter pipe's flow velocity is roughly 4.132 feet per second.
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Ashley and her sisters decide to split the cost of dinner, which is $26. By how much you will each sisters bank account be impacted
Answer:
$13.00 per person
Step-by-step explanation: you divide $26 by 2
Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent.
Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent.
a $500 per year for 6 years at 8%.
b $250 per year for 3 years at 4%.
c $1,000 per year for 2 years at 0%.
d Rework parts a, b, and c assuming they are annuities due.
Future value of $500 per year for 6 years at 8%: $
Future value of $250 per year for 3 years at 4%: $
Future value of $1,000 per year for 2 years at 0%: $
Alright, let's take this step by step.
First, let's understand what an ordinary annuity is. An ordinary annuity is a series of equal payments made at the end of consecutive periods over a fixed length of time. For example, if you save $100 every year for 5 years, that’s an ordinary annuity.
Now, let’s understand the formula to calculate the future value (FV) of an ordinary annuity:
FV = P x ((1 + r)^n - 1) / r
Where:
- FV is the future value of the annuity.
- P is the payment per period (how much you save each time).
- r is the interest rate per period (in decimal form).
- n is the number of periods (how many times you save).
Let’s solve each part:
a) $500 per year for 6 years at 8%.
P = 500, r = 8% = 0.08, n = 6
FV = 500 x ((1 + 0.08)^6 - 1) / 0.08
≈ 500 x (1.59385 - 1) / 0.08
≈ 500 x (0.59385) / 0.08
≈ 500 x 7.4231
≈ 3701.55
So, the future value of $500 per year for 6 years at 8% is about $3,701.55.
b) $250 per year for 3 years at 4%.
P = 250, r = 4% = 0.04, n = 3
FV = 250 x ((1 + 0.04)^3 - 1) / 0.04
≈ 250 x (1.12486 - 1) / 0.04
≈ 250 x (0.12486) / 0.04
≈ 250 x 3.1215
≈ 780.38
So, the future value of $250 per year for 3 years at 4% is about $780.38.
c) $1,000 per year for 2 years at 0%.
P = 1000, r = 0% = 0.00, n = 2
FV = 1000 x ((1 + 0.00)^2 - 1) / 0.00
= 1000 x (1 - 1) / 0.00
= 1000 x 0
= 0
Wait, something went wrong, because we know that if we save $1000 for 2 years with no interest, we should have $2000. This is a special case, where we just sum the contributions because there's no interest:
FV = 1000 x 2
= 2000
So, the future value of $1,000 per year for 2 years at 0% is $2,000.
Now, for annuities due:An annuity due is similar to an ordinary annuity, but the payments are made at the beginning of each period instead of the end. To convert the future value of an ordinary annuity to an annuity due, you can use the following formula:
FV of Annuity Due = FV of Ordinary Annuity x (1 + r)
a) Reworked
FV of Annuity Due = 3701.55 x (1 + 0.08)
≈ 3701
.55 x 1.08
≈ 3997.67
b) Reworked
FV of Annuity Due = 780.38 x (1 + 0.04)
≈ 780.38 x 1.04
≈ 810.80
c) Reworked
FV of Annuity Due = 2000 x (1 + 0.00)
= 2000 x 1
= 2000 (This doesn't change because there's no interest).
And there you have it! The future values for both ordinary annuities and annuities due!
The graph modules the amount of money George saved.
Which of the following functions models the graph?
A. f (x) = 3/2 +30
B. f(x) = 15x + 30
C. f(x) = 30x + 3/2
D. f(x) = 30.2 + 15
Answer:
Answers b homies
Step-by-step explanation:
F(x)=3/2x+30
The function models of the given graph would be f(x) = 15x + 30 which is the correct answer would be an option (B)
What is a graph?
A graph can be defined as a pictorial representation or a diagram that represents data or values.
Consider two points on a line—Point 1 and Point 2. Point 1 has coordinates (x₁,y₁) and Point 2 has coordinates (x₂, y₂)
Take two points (6, 120) and (0, 30) in the graph
Here x₁ = 0, y₁ = 30, x₂ = 6 and y₂ = 120
Let the equation of linear function would be
y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x -x₁]
Subtitute the values of x₁ = 0, y₁ = 30, x₂ = 6 and y₂ = 120
y - 30 = (120 - 30)/(6 - 0 )[x -0]
y - 30 = (90/6)x
y = 15x + 30 or
f(x) = 15x + 30
Therefore, the function models of the given graph would be f(x) = 15x + 30.
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What is the least amount of integers you must pick in order to be sure that at least two of them have the same remainder when divided by 15
There are exactly 15 remainders modulo 15 and they are 0,1,2,…,14.
It is given that at least two of them should have the same remainder when divided by 15.
Division algorithm.
Let aa be an integer and d a positive integer. Then there are unique integers q and r with \(0\leq r < d\) such that \(a=dq+r\)
q is called the quotient and r is called the remainder
q=a div d
r=a mod d
Pigeonhole principle If k is a positive integer and k+1or more objects are placed into k boxes, then there is at least one box containing two or more objects.
Hence, there are exactly 15 remainders modulo 15 and they are 0,1,2,…,14.
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Which element of a text best helps the reader determine the central idea?
minor details
paragraph structure
key details
extra commentary
Answer:
key details, because it tells you more about the story
Answer:
C
Step-by-step explanation:
If x is a binomial random variable with n = 20 and p = 0.25, the expected value of x is:_________
The expected value with a sample size of 20 and a probability of 0.25 will be 5.
What is the expected value?The anticipated value is an extension of the weighting factor in statistical inference. Informally, the anticipated value is the simple average of a significant number of outcomes of a randomly selected variable that was separately chosen.
The expected value is given below.
E(x) = np
Where n is the number of samples and p is the probability.
If x is a binomial random variable with n = 20 and p = 0.25. Then the expected value is given below.
E(x) = 20 x 0.25
E(x) = 5
The expected value with n = 20 and p = 0.25 will be 5.
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Lea earns $120 for 15 hours of work as an intern for a civil engineer. Lea earns the same amount for each hour she works.
Answer:
that would be 8 if you divide them
Find the area of the region bounded by the x-axis, line x=2, line x=6, and lines y=x+3, and y=10-x.
Answer:
A=∫
1
3
x
2
dx
A=[
3
x
3
]
1
3
A=(
3
27
−
3
1
)
A=
3
26
Rachel has 132 baseball card his brother has 5/6 as many baseball card how many baseball card does his brother have
Answer:
110
Step-by-step explanation:
5/6 of 132 is 110
I’ll give brainliest if correct
Which equation represents a nonlinear function
y = x^2 represents a nonlinear function.
A linear function has the form of y = mx+b where m and b are constants and x is variable, the graph of a linear function is always a straight line. A nonlinear function is any function that is not linear, the graph of a nonlinear function is not a straight line.
y = x^2 is nonlinear because the variable x is squared, a quadratic function and its graph is a parabola.
y=2x is a linear function and its graph is a straight line, increasing linearly with x.
y = x is also a linear function and its graph is also a straight line, increasing linearly with x.
y = x+2 is a linear function and its graph is also a straight line with a y-intercept of 2, increasing linearly with x
So, y = x^2 represents a nonlinear function, and it is the correct answer.
Find the value of X
The value of x when the tangents intersect is 24.
How to find angles when tangent intersect?The theorem of tangent intersection states that the the measure of the angle formed by two tangents that intersect at a point outside a circle is equal to one-half the positive difference of the measures of the intercepted arcs.
Therefore, let's use the theorem to find the value of x in the circle as follows:
61 = 1 / 2 × ((10x + 1) - (5x - 1))
61 = 1 / 2 × (10x - 5x + 1 + 1)
61 = 1 / 2 × (5x + 2)
61 = 1 / 2 (5x + 2)
61 = 5 / 2 x + 1
61 - 1 = 5 / 2 x
60 = 5 / 2 x
cross multiply
5x = 120
divide both sides by 5
x = 120 / 5
x = 24
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What is the completely factored form of this polynomial? 7x4 14x3 − 168x2
The completely factored form of the polynomial is 7x² (x + 6) (x - 4)
Given,
The polynomial ; 7x⁴ + 14x³ - 168x²
We have to find the complete factored form of this polynomial;
Polynomial;
An expression that consists of variables, constants, and exponents that is combined using mathematical operations like addition, subtraction, multiplication, and division is referred to as a polynomial (No division operation by a variable).
Here,
The polynomial is 7x⁴ + 14x³ - 168x²
Now,
Factorize the polynomial using common factors;
That is,
7x⁴ + 14x³ - 168x²
7x² (x² + 2x - 24)
Solve x² + 2x - 24 using quadratic formula;
That is,
\(\frac{-b(+-)\sqrt{b^{2}-4ac } }{2a}\) = \(\frac{-2(+-)\sqrt{2^{2} -4*1*-24} }{2*1}\) = \(\frac{-2(+-)\sqrt{4-96} }{2}\) = -2±√-92 / 2
Now,
Solve
-2 + √-92 / 2 = 3.79 ≈ 4
Solve
-2 - √-92 / 2 = -5.79 ≈ -6
Then,
The factors will be (x - 4) and (x + 6)
So,
7x² (x + 6) (x - 4) will be the factored form of the polynomial.
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Park city, Utah, gets 43.8 inches of rain per year. Usually 45% of that amount falls in November through February. How much rain falls in those months?
Find the unknown angle measure in each figure.
Questions 5, 6, and 7
5. x=60
6. x= 31, y=57
7. x=36, y=144, z=90
the slope of the line tangent to the graph of y=xe^x at x=ln 2 is
Answer:
2 + 2 ㏑2
Step-by-step explanation:
y = x (e^x)
to dy/dx (slope), we need to perform the product rule:
if y = f(x) g(x), where both f(x) and g(x) are functions in x, then dy/dx = f(x) g'(x) + f'(x) g(x).
let u = x (dy/dx = 1) and v = e^x ( dv/dx = e^x).
then dy/dx = u (dv/dx) + v (du/dx)
= x (e^x) + e^x. this is the slope.
at x = ㏑2:
dy/dx = ㏑2 (e^㏑2) + e^㏑2
= ㏑2 (2) + 2
= 2 + 2 ㏑2
A box contains 240 lumps of sugar. five lumps are fitted across the box and there were three layers. how many lumps are fitted along the box?
The number of lumps fitted along the box is 16.
To determine the number of lumps fitted along the box, we need to consider the dimensions of the box and the number of lumps in each row and layer.
Given that five lumps are fitted across the box, we can conclude that there are five lumps in each row.
Let's assume that the number of lumps fitted along the box is represented by "x." Since there are three layers in the box, the total number of lumps in each layer would be 5 (the number of lumps in a row) multiplied by x (the number of lumps along the box), which gives us 5x.
Considering there are three layers in the box, the total number of lumps in the box would be 3 times the number of lumps in each layer: 3 * 5x = 15x.
Given that there are 240 lumps in the box, we can equate the equation: 15x = 240.
By dividing both sides of the equation by 15, we find x = 16.
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Which inequality does this graph show?
A. 3y + x < –x – y – 8
B. 3y – x < 3x – y – 8
C. 3y + x < 3x + y – 8
D. 3y + x < 3x – y – 8
Answer:
The inequality 3y + x < 3x - y - 8 is represented by option D.
Step-by-step explanation:
The inequality 3y + x < 3x - y - 8 is represented by option D.
To see this, we can rearrange the inequality to get all the x and y terms on one side, like so:
3y + x < 3x - y - 8
4y < 2x - 8
2y < x - 4
y < (1/2)x - 2
This shows that y is less than a linear function of x, with a slope of 1/2 and a y-intercept of -2. Visually, this represents a downward-sloping line on a graph. Therefore, option D is the correct answer.
[-3] [-12] [-63]
Let a1 = [ 3], a2 = [ 9 ], and b = [ 48]
[-3] [ -9 ] [-48]
is b a linear combination of a1 and a2? a. b is not a linear combination. b. yes b is a linear combination. c. we cannot tell if b is a linear combination.
The values of a1 = [ 3], a2 = [ 9 ], and b = [ 48] and b is not a linear combination of a1 and a2. The correct answer is (a).
To check if b is a linear combination of a1 and a2, we need to see if there exist scalars x and y such that:
x * a1 + y * a2 = b
Substituting the given values, we get:
x * [3] + y * [9] = [48]
[-3] [-9] [-48]
This system of linear equations can be solved using standard methods, such as Gaussian elimination. However, we can quickly see that there are no values of x and y that satisfy the equation.
First, note that the first two rows of the equation system are linearly dependent, since the second row is a multiple of the first row. Therefore, we only have two independent equations to solve for three unknowns (x, y, and z).
If we subtract the first equation from the second equation, we get:
6y = 0
This implies that y = 0. Substituting y = 0 in the first equation, we get:
3x = 48
This implies that x = 16. Substituting these values in the third equation, we get:
0 ≠ -48
Since there are no values of x and y that satisfy the equation system, we can conclude that b is not a linear combination of a1 and a2. Therefore, the answer is (a) b is not a linear combination.
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-6x - 10 = -40 using inverse operatios
Hey there!
ANSWER: \(x=5\)EXPLANATION:Let's solve this equation.
\(-6x-10=-40\)
Add 10 to both sides.
\(-6x-10+10=-40+10=-6x=-30\\-6x=-30\)
Divide both sides by by -6.
\(\frac{-6x}{-6} =\frac{-30}{-6}\)
Simplify the fraction by dividing -30 by -6.
\(-30/-6=5\\ x=5\)
x=5 is your answer.
Hope this helps!
\(\text{-TestedHyperr}\)
Find the mean of each set of numbers. Round
answers to the nearest tenth.
23, 32, 13, 12, 33, 22, 30
Answer: 23.6 (rounded to the nearest tenth)
Step-by-step explanation:
What is the surface area of the square pyramid net?
The surface area of a square pyramid net can be found by adding the areas of the base and the four triangular faces.
First, find the area of the base by multiplying the length and width of the square base.
Area of base = length × width
Next, find the area of one of the triangular faces by using the formula:
Area of triangle = 0.5 × base × height
Since there are four triangular faces in a square pyramid, multiply the area of one triangle by four to find the total area of the triangular faces.
Area of triangular faces = 4 × (0.5 × base × height)
Finally, add the area of the base and the area of the triangular faces to find the total surface area of the square pyramid net.
Surface area = Area of base + Area of triangular faces
= (length × width) + (4 × (0.5 × base × height))
= (length × width) + (2 × base × height)
So, the surface area of a square pyramid net is the sum of the area of the base and the area of the four triangular faces.
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One of the two solutions to the equation $5x^2 - 11x - 36 = 0$ is $x = 4$. What is the other solution?
the other solution is\(\frac{-9}{5}\)
Answer:
Solution given:
\(5x^2 -11x-36=0\)
doing middle term factorization
we need to get 11 by subtracting product of 5 and 36.
5*36=180=2*2*3*3*5
we get 11 by subtracting 5*2*2-3*3=20-9
substituting value of 11 as (20-9)
now
\(5x^2 -(20-9)x-36=0\)open bracket
\(5x^2 -20x+9x-36=0\)
taking common from each two terms
5x(x-4)+9(x-4)=0
again taking common
(x-4)(5x+9)=0
either
x-4=0
x=4
or
5x+9=0
5x=-9
x=\(\frac{-9}{5}\)
Step-by-step explanation:
Following are the calculation to the given equation:
Given:
\(\to 5x^2 - 11x - 36 = 0\)
one solution:
\(x=4\)
To find:
other solution=?
Solution:
\(\to 5x^2 - 11x - 36 = 0\\\\\to 5x^2 - (20-9)x - 36 = 0\\\\\to 5x^2 - 20x+9x - 36 = 0\\\\\to 5x(x - 4)+9(x - 4) = 0\\\\\to (x - 4) (5x+9) = 0\\\\\to x - 4=0 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 5x+9 = 0\\\\\to x = 4 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 5x = -9\\\\\to x = 4 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x = \frac{-9}{5}\\\)
Therefore, another solution is "\(-\frac{9}{5}\)".
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what's the rate of change for y = 500(1-0.2)^t
To find the rate of change of y with respect to time t, we need to take the derivative of the function y = 500(1-0.2)^t with respect to t:
dy/dt = 500*(-0.2)*(1-0.2)^(t-1)
Simplifying this expression, we get:
dy/dt = -100(0.8)^t
Therefore, the rate of change of y with respect to t is given by -100(0.8)^t. This means that the rate of change of y decreases exponentially over time, and approaches zero as t becomes large.
Find x in this geometry question
Answer:
AB || CE, so we have triangle DEO, two of whose angles are 100° and 26° (from point D, draw DE such that CD + DE = CE intersects BO). The third angle of this triangle measures 54°, so
x = 180° - 54° = 126°.
In the morning a farm worker packed 4 pints of strawberries every 6 minutes.In the afternoon she packed 1 pint of strawberries every 3 minutes.What was the difference between her morning and afternoon packing rates,in pints per hour?
Answer:
20 pints per hour
Step-by-step explanation:
60/6 = 10
10 x 4 = 40
40 pints/hour in the morning
60/3 = 20
20 x 1 =20
20 pints/hour in the afternoon
40 - 20 = 20
20 pint/hour difference
If $2x-y=7,$ what is the value of $7-8x+4y$?
Answer:
\(7-8x+4y=-21\)
Step-by-step explanation:
\(2x-y=7 \implies 8x-4y=28 \\ \\ \implies 7-8x+4y=7-28=-21\)
Jill's front door is 42 wide and 82 tall. She purchased a circular table that is 96 inches in diameter. Will the table fit through the front door???
Answer:
Step-by-step explanation:
Answer:
yes because 42+82 is greater than 96
it will just about fit through the door
hope this helps! :)
(08.05 MC)The following box plot shows the number of books sold each day at a bookstore for 40 days. How many days did the bookstore sell 2 to 12 books?
Answer:
20 days
Step-by-step explanation:
Number of books sold each day for 40 days :
The first quartile (Q1) = 2
For the 25% of the days = 2 books were sold
Hence 0.25 * 40 = 10 days, 2 books or less were sold
The upper quartile (Q3) = 12 books
For up to 75% of the days = 0.75 * 40 = 30 days ; 12 books or less were sold
To obtain the number of books sold between 2 and 12 ; we subtract :
(30 days - 10 days) = 20 days
Answer:
20
Step-by-step explanation:
You have 1200 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in
half. What are the largest dimensions of this enclosure that you could build?
Let x = length and y = width
You would have 2 lengths, so 2x and 3 widths, so 3y
Those need to equal total length of fence:
2x + 3y = 1200
The 3 widths would equal total fence minus the 2 lengths:
3Y = 1200-2x
Solve for y: y = 400 -2/3x
Area = length x width = xy. Replace y :
Area = x(400-2/3x) = 400x-2/3x^2
Differentiate:
400-4x/3 =0
4x/3 = 400
4x = 1200
X = 300
Y = 400-2/3(300) = 200
The dimension would be 300 ft x 200 ft