Answer:
a) In 2 hours
b) 16 km
Step-by-step explanation:
Let's first find out how far Abel has traveled in 2 hours. We can use the formula:
distance = speed x time
distance = 4 km/h x 2 h = 8 km
So when Jack starts cycling, Abel has already covered 8 km.
Now, let's say it takes Jack t hours to catch up to Abel. During this time, Abel has continued walking for t + 2 hours. So we can write:
distance covered by Abel = distance covered by Jack
4 km/h x (t + 2 h) = 8 km/h x t
Simplifying this equation, we get:
4t + 8 = 8t
4t = 8
t = 2
So Jack will overtake Abel after 2 hours of cycling. To find out how far they will have traveled, we can use the formula:
distance = speed x time
distance = 8 km/h x 2 h = 16 km
Therefore, when Jack overtakes Abel, they will have traveled 16 km in total.
The area of the circular base of a cone is 16π cm², and the slant height of the cone is 4 times the radius of the cone.
What is the approximate lateral area of the cone?
The approximate lateral area of the cone is equal to 200.96 cm².
How to calculate the lateral area of the cone?Mathematically, the lateral area of a cone can be calculated by using this mathematical expression:
Lateral surface area of a cone, LSA = πrl or πr√(r^2 + h^2)
Where
l represents the slant height of the cone.r represents the radius of the cone.h represents the height of the cone.How to calculate the area of a circle?Mathematically, the area of a circle can be calculated by using this formula:
Area of a circular base = πr²
16π = πr²
Radius, r = √16
Radius, r = 4 cm.
Substituting the given parameters into the lateral area of a cone formula, we have the following;
Lateral surface area of a cone, LSA = πrl = πr4(r)
Lateral surface area of a cone, LSA = 3.14 × 4 × 16
Lateral surface area of a cone, LSA = 200.96 cm².
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Answer:
201 beause you are rounding to the nearest whole number
Step-by-step explanation:
A total of 632 adults and children are at a water park. There are 68 fewer adults than children at the water park. How many children are at the water park?
Answer:
350 childrenStep-by-step explanation:
x = Number of adults
x + x + 68 = 632
2x = 632 - 68
2x = 564
x = 282
282 + 68 = 350
350 children.
We can always check.
282 + 350 =
It equals 632, so we know our answer is correct.
Answer
564
Step-by-step explanation:
Fill in the blank for this question!
While an absolute value may be any number, the output from an absolute value expression is always greater than or equal to zero
How to Interpret an Absolute Value Function?The absolute value | x | of a real number x is defined as the non-negative value of x without regard to its sign. For example, the absolute value of 3 is 3, and the absolute value of −3 is also 3. The absolute value of a number may be thought of as its distance from zero along real number line.
The absolute value of any number is seen to be always greater than or equal to zero. Both a number and its opposite are the same distance from zero on the number line. Since they have the same distance from zero, they have the same absolute value.
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A regular 10-sided polygon has a perimeter of 540 feet. What is
the length of one side?
A.540 feet
B.360 feet
C.270 feet
D.54 feet
Answer:
D. 54 feet
Step-by-step explanation:
One side will be 1/10 of the total length of all 10 sides.
(1/10)(540 ft) = 54 feet . . . length of one side
(SAT Prep) Find the value of x.
x 105 35
Angles in a triangle add up to 180 degrees
The value of x is 85 degrees
What is triangle?A triangle is a polygon which has three sides and three vertices. It is one of the normal shapes in geometry. A triangle with vertices A, B, and C has three sides & three angles A, B, C.
here, we have,
How to determine the value of x
The total sum of angles for a triangle is 180 degrees.
So, we have:
x + 35 + 60 = 180
Evaluate the sum
x + 95= 180
Subtract 95 from both sides
x = 85
Hence, the value of x is 85 degrees
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Full question: (SAT Prep) Find the value of x. 35° 60° X
x=?
Can u please help me with This am trying to study but can’t get it
Given:
Following Matrices are given.
\(A=\begin{bmatrix}{2} & {1} \\ {3} & {4}\end{bmatrix},B=[\text{ }5\text{ 4 \rbrack, C=}\begin{bmatrix}{4} & {1} & {6} \\ {} & {} & {} \\ {5} & {2} & {7}\end{bmatrix}\)Find:
we have to find which Matrix multiplication can be defined.
Explanation:
For Matrix multiplication, the number of columns of first Matrix should be equal to the number of rows of the second Matrix.
Therefore, the following Matrix multiplication can be defined
BC,Because number of columns of B is 2 and number of rows of C is 2.
AC,Because number of columns of A is 2 and number of rows of C is 2.
BA,Because number of columns of B is 2 and number of rows of A is 2.
Therefore, the multiplications BC,AC,BA can be defined.
Complete the inequality to represent the following: 13 times a number x
is less than or equal to 200.
The value for the Inequality 13x ≤ 200 is x ≤ 15.384.
What is Inequality?Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.
Given:
13 times a number x is less than or equal to 200.
Now, Writing the Inequality Mathematically
13x ≤ 200
x ≤ 200 / 13
x ≤ 15.384
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x is an acute angle. Find the value of x in degrees.
COS x=0.2
write your answer as an integer or as a decimal rounded to the nearest hundredth.
The value of x in degrees will be x=78.46
What is trigonometry?The branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.There are different angles like Cos,Sin,tan,cosec,sec and cot in the trigonometry.
It is given that:
We have the value of CosX=0.2 we will take inverse of the value 0.2 and find the angle X. after taking the cos inverse of the value 0.2 we found out the angle X=78.46
Cos X = 0.2
X = Cos¹ 0.2
X = 78.46°
Hence the value of x in degrees will be x=78.46
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The profit a company earns is the revenue the company makes minus the expenses. The
revenue the company makes in a month is represented by the equation R(x) = 5,000 - 2x²,
while the expenses of the company for the month are represented by the equation
E(x) = 15x + 1,000.
The expression to calculate the profit be,
⇒ P(x) = -2x² - 15x + 4,000
To calculate the profit of the company in a month,
we need to subtract the expenses from the revenue.
The profit equation (P) for the company in a month can be represented as,
⇒ P(x) = R(x) - E(x)
Substituting the given revenue and expense equations, we get,
⇒ P(x) = (5,000 - 2x²) - (15x + 1,000)
Simplifying the equation, we get,
⇒ P(x) = -2x² - 15x + 4,000
Therefore,
The profit of the company in a month can be calculated using the above equation,
where x represents the number of units sold or any other relevant variable.
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Find the volume of a cone with radius 5 yards and height 8 yards. Round your answer to two
decimal places
The volume of a cone will be 209.41 yard³.
What is volume of cone?
The area or volume that a cone takes up is referred to as its volume. Cones are measured by their volume in cubic units such as cm3, m3, in3, etc. By rotating a triangle at any of its vertices, a cone can be created. A cone is a robust, spherical, three-dimensional geometric figure.. Its surface area is curved. The perpendicular height is measured from base to vertex. Right circular cones and oblique cones are two different types of cones. While the vertex of an oblique cone is not vertically above the center of the base, it is in the right circular cone where it is vertically above the base.
So the
V = (1/3)πr²h.
Given, data r = 5yards
h = 8 yards
Volume = 1/3 * π * r ²* h
= 1/3 * 3.141*25*8
=209.41 yard³
Hence, the volume of a cone will be 209.41 yard³.
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Help me please i need help.
There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag.
What is the theoretical probability of randomly drawing a red marble?
25%
62.5%
20%
41.7%
Answer:
20%
Step-by-step explanation:
The theoretical probability of drawing a red marble can be found by dividing the number of red marbles by the total number of marbles in the bag:
P(red) = number of red marbles / total number of marbles
P(red) = 5 / (5 + 8 + 12)
P(red) = 5 / 25
P(red) = 0.2
So the theoretical probability of randomly drawing a red marble is 20%, which corresponds to option (C).
The pie is cut into 15 equal slices
Shade 1/5 of the pie
2. The table below shows that the distance d varies directly as the time t. Find the constant of variation and the equation which describes the relation.
2. The table below shows that the distance d varies directly as the time t. Find the constant of variation and the equation which describes the relation.
Solution:-Since the distance d varies directly as the time t, then d = kt.
Using one of the pairs of values, (2, 20), from the table, substitute the values of d and t in d = kt and solve for k.
\(\sf{\rightarrow{d = kt}}\)
\( \sf\rightarrow{20 = 2k }\)
\( \sf\rightarrow{K= \frac{20}{2} }\)
\(\sf\rightarrow{K={\color{magenta}{10}}}\)
Answer:-Therefore, the constant of variation is 10.PLEASE SHOW YOUR WORK ON HOW TO SOLVE THIS PROBLEM!! BEST ANSWER ILL GET MARKED BRAINIEST!
4x+5/x+7
Answer:
x = 2.4
Step-by-step explanation:
4x + 5 / x + 7
combine like terms
X + 4x = 5x
5 + 7= 12
12/ 5x
Divide
12 /5= 2.4
X= 2.4
f(x) = -x^2
Find f(3)
Answer:
9
Step-by-step explanation:
f(x) = -x^2
f(3) = -3^2
f(3) = 9
please look at the screenshot below 45 points and first one will be brainliest
Answer:
A
Step-by-step explanation:
To find the perimeter you must add all four sides together. Since it's a rectangle, the top and bottom are the same size and the left and right sides are the same size. You add all four together to get the perimeter.
i need help due tonight
Answer:
s=6
Step-by-step explanation:
3(s+4)=30
multiply 3×s and 3×4
3s+12=30
-12=-12
3s=18
divide 18 and 3s
s=6
Answer:
s=6
Step-by-step explanation:
determine the maximum and minimum values of the function, at what values of x are they achieved? (without using a derivative)
\(y=\sin^3x-\sin^6x\)
The maximum and minimum values of the function is solved
Given data ,
We can find the maximum and minimum values of the function by taking the derivative of y with respect to x and setting it equal to zero.
y = (sin x)³ - (sin x)⁶
y' = 3(sin x)² cos x - 6(sin x)⁵ cos x
Setting y' equal to zero:
0 = 3(sin x)² cos x - 6(sin x)⁵ cos x
0 = 3(sin x)² cos x (1 - 2(sin x)³)
sin x = 0 or (sin x)³ = 1/2
If sin x = 0, then x = kπ for any integer k.
If (sin x)³ = 1/2, then sin x = (1/2)^(1/3) ≈ 0.866. This occurs when x = π/3 + 2kπ/3 or x = 5π/3 + 2kπ/3 for any integer k.
To determine whether these values correspond to a maximum or minimum, we can use the second derivative test.
y'' = 6(sin x)³ cos² x - 15(sin x)⁴ cos² x - 9(sin x)⁴ cos x + 6(sin x)⁵ cos x
y'' = 3(sin x)³ cos x (4(sin x)² - 5(sin x)² - 3cos x + 2)
For x = kπ, y'' = 3(0)(-3cos(kπ) + 2) = 6 or -6, depending on the parity of k. This means that these points correspond to a maximum or minimum, respectively.
For x = π/3 + 2kπ/3 or x = 5π/3 + 2kπ/3, y'' = 3(1/2)^(5/3) cos x (4(1/2)^(2/3) - 5(1/2)^(1/3) - 3cos x + 2). This expression is positive for x = π/3 + 2kπ/3 and negative for x = 5π/3 + 2kπ/3, which means that the former correspond to a minimum and the latter to a maximum.
Hence , the maximum value of the function is y = 27/64, which occurs at x = 5π/3 + 2kπ/3, and the minimum value is y = -1/64, which occurs at x = π/3 + 2kπ/3
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Answer:
maximum: 0.25minimum: -2Step-by-step explanation:
You want the maximum and minimum values of the function ...
y = sin³(x) -sin⁶(x)
SolutionWhen we substitute sin³(x) = z, we have the quadratic expression ...
y = z -z² . . . . . a quadratic function
Adding and subtracting 1/4, we can put this in vertex form:
y = -(z -1/2)² +1/4
MaximumThis version of the function describes a parabola that opens downward and has a vertex at (z, y) = (1/2, 1/4). The y-value of the vertex represents the maximum value of the function.
The maximum value of y is 1/4.
MinimumThe sine function is a continuous function with a range of [-1, 1]. Then z will be a continuous function of x, with a similar range. We already know that y describes a function of z that is a parabola opening downward with a line of symmetry at z = 1/2. This means the most negative value of y will be found at z = -1 (the value of z farthest from the line of symmetry). That value of y is ...
y = (-1) -(-1)² = -1 -1 = -2
The minimum value of y is -2.
__
Additional comment
The range of y is confirmed by a graphing calculator.
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Find the solution to the following system of equations using the addition method. 5x - 3y = 12 -4x + 3y = 5 (13, -4)
Answer: You didn't give answer choices but I think the answer would be (17, 73/3)
I keep getting the wrong answer.
The volume of the solid obtained by rotating the region bounded by the curve y = 1 - (x - 5)² in the first quadrant about the y-axis is 51π cubic units.
What is the volume of the solid obtained by rotating the region in the first quadrant bounded by the given curve about the y - axis?To find the volume of the solid obtained by rotating the region bounded by the curve y = 1 - (x - 5)² in the first quadrant about the y-axis, we can use the method of cylindrical shells.
The formula for the volume using cylindrical shells is:
V = 2π ∫ [a, b] x * h(x) dx
Where:
- V is the volume of the solid
- π represents the mathematical constant pi
- [a, b] is the interval over which we are integrating
- x is the variable representing the x-axis
- h(x) is the height of the cylindrical shell at a given x-value
In this case, we need to solve for x in terms of y to express the equation in terms of y.
Rearranging the given equation:
x = 5 ± √(1 - y)
Since we are only interested in the region in the first quadrant, we take the positive square root:
x = 5 + √(1 - y)
Now we can rewrite the volume formula with respect to y:
V = 2π ∫ [c, d] x * h(y) dy
Where:
- [c, d] is the interval of y-values that correspond to the region in the first quadrant
To determine the interval [c, d], we set the equation equal to zero and solve for y:
1 - (x - 5)² = 0
Expanding and rearranging the equation:
(x - 5)² = 1
x - 5 = ±√1
x = 5 ± 1
Since we are only interested in the region in the first quadrant, we take the value x = 6:
x = 6
Now we can evaluate the integral to find the volume:
V = 2π ∫ [0, 1] x * h(y) dy
Where h(y) represents the height of the cylindrical shell at a given y-value.
Integrating the expression:
V = 2π ∫ [0, 1] (5 + √(1 - y)) * h(y) dy
To find h(y), we need to determine the distance between the y-axis and the curve at a given y-value. Since the curve is symmetric, h(y) is simply the x-coordinate at that point:
h(y) = 5 + √(1 - y)
Substituting this expression back into the integral:
V = 2π ∫ [0, 1] (5 + √(1 - y)) * (5 + √(1 - y)) dy
Now, we can evaluate this integral to find the volume
V = 2π ∫ [0, 1] (5 + √(1 - y)) * (5 + √(1 - y)) dy
To simplify the integral, let's expand the expression:
V = 2π ∫ [0, 1] (25 + 10√(1 - y) + 1 - y) dy
V = 2π ∫ [0, 1] (26 + 10√(1 - y) - y) dy
Now, let's integrate term by term:
\(V = 2\pi [26y + 10/3 * (1 - y)^\frac{3}{2} - 1/2 * y^2]\)] evaluated from 0 to 1
V = \(2\pi [(26 + 10/3 * (1 - 1)^\frac{3}{2} - 1/2 * 1^2) - (26 * 0 + 10/3 * (1 - 0)^\frac{3}{2} - 1/2 * 0^2)]\)
V = 2π [(26 + 0 - 1/2) - (0 + 10/3 - 0)]
V = 2π (25.5)
V = 51π cubic units
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Based on the figure below, what is the value of x?
(5x + 15)
01
09
0 11
15
20°
Answer:
undefined
Step-by-step explanation:
because
the figure does not appear
The table shows the pricing for four different types of apples. Which type costs the least per kilogram? Type: Cost:
A $4 for 1.5 kg
B $5 for 2.0 kg
C $7 for 2.0 kg
D $8 for 3.5 kg
Answer:
The answer is D. It is roughly $2.29 for one kilogram of apples.
Step-by-step explanation:
4 / 1.5 = 2.6
5 / 2 = 2.5
7 / 2 = 3.5
8 / 3.5 = 2.2
Determine whether each statement is always true, sometimes true, or
never true.
1. Every square is a rhombus.
2. Every rhombus is a parallelogram.
3. Every rectangle is a parallelogram.
4. The diagonals of a square are perpendicular.
5. If the diagonals of a quadrilateral bisect each other, then the
quadrilateral is a square.
6. If the diagonals of a quadrilateral are perpendicular, then the
quadrilateral is a rhombus.
7. The diagonals of a rectangle are congruent.
8. The diagonals of a rhombus bisect the vertex angles.
9. Some rectangles are rhombi.
10. Some rhombi are squares.
Here the statements 1, 2, 3, 4, 5, 7, 8, 10 are correct according to the rules of the shapes.
1: A rhombus is a quadrilateral with four equally sized sides. Each square is a rhombus since they all have four sides that are the same length. 2: Due to the parallel alignment of its opposing sides, every rhombus is a parallelogram. 3: It is true that all rectangles are parallelograms since they have two sets of parallel sides and two pairs of equal opposing sides. 4: The other is split into two equal halves by each bisector. 5: If a quadrilateral's diagonals are equal and bisect one another at right angles, it is a square. 7: Since the diagonals themselves are congruent, each bisected line segment is also congruent. 8: The diagonals split a rhombus's vertex angles into equal halves. The diagonals of a rhombus are at right angles to one another. 10: A square is a rhombus. Sometimes, this is accurate. When a rhombus has four right angles, it is true. So the statements 1,2,3,4,5,7,8,10 are correct.
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Solve for x leave your answer in simplest radical form
Answer:
X=11 trust me on my mom
groom lawn equipment pays Amy a $1130 monthly salary plus 10% commission on merchandise she sells each month. Assume Amy's sales were $37,200 for last monthamount of commissionamount of gross pay
The monthly salary = $1130 plus 10% commission from the sells
The sales of the last month = $37,200
so, the amount of commission = 10% of 37,200 =
\(\frac{10}{100}\cdot37,200=0.1\cdot37,200=3,720\)So, the gross pay = 1,130 + 3,720 = $4,850
(x + 8)(x-8)
answer choices
A x2 + 8x + 64
B x²-64
C x² + 64
x2 + 16X - 64
Step-by-step explanation:
we know the formula(x^2-y^2)=(x+y)(x-y)
so (x+8)(x-8)=x^2-8^2=x^2-64
so the right answer is B
helppppp pleaseee!!! will give brainliest
Answer:
:) ok let's see
i'll do my best.
pls dont sue me.
the graph is going down from what I can see, so I guess it would have a negative correlation.
If we wish to label the strength of the association, for absolute values of r, 0-0.19 is regarded as very weak, 0.2-0.39 as weak, 0.40-0.59 as moderate, 0.6-0.79 as strong and 0.8-1 as very strong correlation, but these are rather arbitrary limits, and the context of the results should be considered.
But, judging from the image, I would say it would have a weak correlation, because the coordinated are not that very well together.
So ultimately, we'll go for answer D.
let me know it u think it's something else.
and don't forget to mark me brainliest!
Justify Results Line & passes through the origin and the point (4, 5). Suppose point (x, y) also lies on Line &.
A. The slope of Line & from the origin to (4, 5) is :
B. Why is the slope of Line & from the origin to (x, y) the same as the slope from the origin to (4, 5)?
The slope of the line from the origin to (4,5) is 5/4
What is the slope of the line?A line's slope in mathematics is defined as the ratio of the change in the y coordinate to the change in the x coordinate.
Both the net change in the y-coordinate and the net change in the x-coordinate are denoted by y and x, respectively.
Consequently, the formula for the change in y-coordinate with regard to the change in x-coordinate is
m = y/x = y/x = change in y/change in x
where "m" represents a line's slope.
Additionally, the slope of the line may be shown as
tan θ = Δy/Δx
So, the slope of a line is tan.
A line's slope often indicates the steepness and direction of the line. By calculating the difference between the coordinates of the two locations, (x1,y1) and (x2,y2), it is simple to calculate the slope of a straight line between them. The letter "m" is frequently used to denote slope.
What is the slope formula?The slope formula is as follows if P(x1,y1) and Q(x2,y2) are the two points on a straight line:
Slope, m = (y2 - y1)/Change in x-coordinates/Change in y-coordinates
(x2 – x1)
As a result, using the formula above, we can quickly determine the slope of a line connecting two locations.
The rise of the line from one point to another (along the y-axis) over the run is another way to describe the slope of a line between two locations (along x-axis). Therefore,
Rise/Run = Slope, m
A) In the above question the slope of the line from the origin to (4,5) is
=(5-0)/(4-0)
=5/4
B) Since the point lies on the line that has a slope of 5/4
Hence (x,y) will have the same slope.
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You are making identical bagel platters using
40 plain bagels, 30 raisin bagels, and 24 blueberry
bagels. What is the greatest number of platters
that you can make if there are no leftover bagels?