Answer:
17.2
Step-by-step explanation:
23 ⇒ Below 5, round down
20 ⇒ Add to decimal
17. 23 ⇒ 17.2 / 17.20
On World Environment day, Class-9 students bought five plants of mango, silver oak, orange, banyan, and
Amla from the soil department. They plotted where to plant these trees and noted the locations as (x, y).
Then the group leader was then assigned to join these points in the given order.
(iv) Which of the following trees are planted exactly in the x - axis?
(a) Amla and Mango
(b) Orange and Amla
(c) Orange and mango
(d) Silver Oak and Banyan
Based on the points given about the locations these trees are planted, the trees that will be planted exactly on the x-axis are (a) Amla and Mango.
Which trees will be on the x-axis?When plotting a line on a graph, the points that will be found on the x-axis are those that will have a y coordinate of 0.
From the table given, both Mango and Amla have y coordinates of 0 which means that they will be planted exactly on the x-axis.
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-
X
o
1
2
3
4
5
6
Y
4.1 -0.9 -3.9 -5.1 -4.1
-4.1 -1.1 4.1
Use the data in the chart. Fill in the blanks to write a quadratic regression equation
that looks like y =
x² +
_xt
ટ
Use the Desmos graphing calculator and round each coefficient in the equation to
the nearest thousandth.
Enter your answers (numbers only) in the boxes. Do not use spaces. Be sure to type a
negative sign if needed on your coefficient.
The quadratic regression equation of the table of values is y = 0.71x² - 5.04x + 3.76
How to determine the regression equation?The table of values is given as:
x: 0 1 2 3 4 5 6
y: 4.1 -0.9 -3.9 -5.1 -4.1 -4.1 -1.1
To determine the quadratic regression equation, we make use of a graphing calculator
From the graphing calculator, we have the following calculation summary:
a = 0.7, b = -5.04 and c = 3.76
A quadratic regression equation is represented as:
y = ax² + bx + c
Hence, the quadratic regression equation of the table of values is y = 0.71x² - 5.04x + 3.76
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Find (a) arc length and (b) Area of a sector.
Answer:
a) 38.40 yd (2 dp)
b) 211.18 yd² (2 dp)
Step-by-step explanation:
Formula
[tex]\textsf{Arc length}=2 \pi r\left(\dfrac{\theta}{360^{\circ}}\right)[/tex]
[tex]\textsf{Area of a sector}=\left(\dfrac{\theta}{360^{\circ}}\right) \pi r^2[/tex]
[tex]\quad \textsf{(where r is the radius and}\:\theta\:{\textsf{is the angle in degrees)}[/tex]
Calculation
Given:
[tex]\theta[/tex] = 200°r = 11 yd[tex]\begin{aligned}\implies \textsf{Arc length} &=2 \pi (11)\left(\dfrac{200^{\circ}}{360^{\circ}}\right)\\ & = 22 \pi \left(\dfrac{5}{9}\right)\\ & = \dfrac{110}{9} \pi \\ & = 38.40\: \sf yd \:(2\:dp)\end{aligned}[/tex]
[tex]\begin{aligned} \implies \textsf{Area of a sector}& =\left(\dfrac{200^{\circ}}{360^{\circ}}\right) \pi (11)^2\\& = \left(\dfrac{5}{9}\right)\pi \cdot 121\\& = \dfrac{605}{9} \pi\\& = 211.18\: \sf yd^2 \:(2\:dp)\end{aligned}[/tex]
Please note: As you have not specified if π should be approximated, I have not used an approximation for π.
CAN SOMEONE HELP ME PLEASE
Answer:
13.9
Step-by-step explanation:
d = √((x2 - x1)^2 + (y2 - y1)^2)
Find the difference between coordinates:
(x2 - x1) = (-5 - 0) = -5
(y2 - y1) = (-3 - 10) = -13
Square the results and sum them up:
(-5)^2 + (-13)^2 = 25 + 169 = 194
Now Find the square root and that's your result:
Exact solution: √194
Approximate solution: 13.9284
The diameter of the circle is 5 inches, the circumference is 15.70 inches, and the area is 19.625 square inches.
Use the formula for area and solve for the value of pi for the circle.
Answer:
it is approximately 19.63.
Step-by-step explanation:
Area= pi r^2
Can this please be worked out so I can have a better understanding?
Given the equation (picture 1)
and using the formula(picture 2)
find A, B, and C
Please if take your time to break it down for me so I can use it as a guide for the rest of the test!!! Thx <3 :)
Step-by-step explanation:
no, no, you use the equation to identify a, b and c.
then you use the formula with these values to get the solutions to the equation (the values of x for which the equation delivers 0).
always remember, a quadratic equation always has 2 solutions. sometimes at least one of them are not a real number, sometimes the 2 springs are equal, ...
x² - 4x - 2 = 0
a, b, c are the factors of the terms in x and the constant term.
so,
a = 1
b = -4
c = -2
x = (-b ± sqrt(b² - 4ac))/(2a)
x = (4 ± sqrt((-4)² - 4×1×-2))/(2×1) =
= (4 ± sqrt(16 + 8))/2 = (4 ± sqrt(24))/2 =
= (4 ± sqrt(4×6))/2 = (4 ± 2×sqrt(6)) / 2 =
= 2 ± sqrt(6)
x1 = 2 + sqrt(6)
x2 = 2 - sqrt(6)
Answer:
x = 4.45 and x=-0.45
Step-by-step explanation:
A = 1
B= -4
C = -2
= [tex]\frac{-(-4) \sqrt{ (-4)^{2} -4 (1)(-2) } }{2(1)}[/tex]
= [tex]\frac{4\sqrt{16+8} }{2}[/tex]
= [tex]\frac{4\sqrt{24} }{2}[/tex]
X = 4 + [tex]\sqrt{24}[/tex] / 2
x = 4.45
For x2
x= 4 - [tex]\sqrt{24}[/tex] / 2
x=-0.45
Find the area of a circle with an arc length of 4π and a central angle of 45 degrees. Leave the answer in terms of π.
[tex]~~~~~~\text{Arc length} = r \theta \\\\\implies 4\pi = r\left( 45 \times \dfrac{\pi}{180} \right)~~~~~~~~;[\theta ~ \text{is in radians.}]\\\\\implies 4 = \dfrac{45r}{180}\\\\\implies 45r = 180 \times 4 = 720\\\\\implies r = \dfrac{720}{45}\\\\\implies r = 16~ \text{units.}\\\\\text{Now,}\\\\\text{Area} = \pi r^2\\\\~~~~~~~=\pi \cdot 16^2\\\\~~~~~~~=256\pi~ \text{units}^2[/tex]
Find the vertex. f(x) = 9x2 + 1
Answer:
vertex = (0, 1 )
Step-by-step explanation:
f(x) = 9x² + 1 ← has it's vertex on the y- axis
let x = 0 in f(x)
f(0) = 9(0)² + 1 = 0 + 1 = 1
vertex = (0, 1 )
Tasha has foam blocks stored in a box that measures 214 ft long by 2 ft wide by 2 ft tall.
Each foam block is a cube with 12ft edge length.
How many blocks can fit into the box?
does someone know this answer
Which situation can be represented by the inequality 150 ≤ 15x + 55 ?
a. Thomas has 15 baseball cards in his collection. He will buy 55 new ones every month. Thomas collects baseball cards for x months. For what values of x will Thomas have at most 150 baseball cards?
b. Thomas has 15 baseball cards in his collection. He will buy 55 new ones every month. Thomas collects baseball cards for x months. For what values of x will Thomas have at least
150 baseball cards?
c. Thomas has 55 baseball cards in his collection. He will buy 15 new ones every month. Thomas collects baseball cards for x months. For what values of x will Thomas have at most 150 baseball cards?
d. Thomas has 55 baseball cards in his collection. He will buy 15 new ones every month. Thomas collects baseball cards for x months. For what values of x will Thomas have at least 150 baseball cards?
Inequalities help us to compare two unequal expressions. The correct option is C.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed.
It is mostly denoted by the symbol <, >, ≤, and ≥.
The situation that can be represented by the inequality 150 ≤ 15x + 55 is Thomas has 55 baseball cards in his collection. He will buy 15 new ones every month. Thomas collects baseball cards for x months. For what values of x will Thomas have at most 150 baseball cards?
Hence, the correct option is C.
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5 cm
3 cm
5 cm
8 cm
2 cm
7 cm
what is the volume of the prism? show your thinking. organize it so it can be followed by others.
8400
Step-by-step explanation:
use multiplication
I cant reveal any more things that I know
Write standard form of the equation of the line through the given point with the given slope
through: (4, -4), slope = -1
Answer:
x+1y=-4
Step-by-step explanation:
use ax+by=c
Select either relation (if the set is a relation but not a function), function (if the set is both a relation and a function), or
nelther (If the set is not a relation).
A={(1, 2) (2, 2) (3, 2) (4, 2)
A. Function
B. Relation
C. Neither
Answer:
C neither
the coordinates shows that only the x intercepts are moving not y the line of the graph will be horizontal and straight . it is not a function
The midpoint of overline AB is M(-4, -3). If the coordinates of A are (-1, -2) what are the coordinates of B?
Answer:
(-2.5,-2.5)
Step-by-step explanation:
(-4+-1)÷2=-2.5
(-3+-2)÷2=-2.5
Answer:
(-7, -4)
Step-by-step explanation:
Equating A and B to the Midpoint (M) :
(-4, -3) = (-1 + x / 2, -2 + y / 2)Equations formed :
-1 + x / 2 = -4-1 + x = -8x = -72. -2 + y / 2 = -3
-2 + y = -6y = -4Coordinates of B :
(x, y)(-7, -4)Help me with this question please
Answer:
∠A≅∠X AB≅XZ
∠B≅∠Z AC≅XY
∠C≅∠Y BC≅ZY
ΔABC≅ΔZYX
Step-by-step explanation:
congruent is identical in form so if the angle has one dash than look for the identical version on the other triangle
The nearest-known exoplanet from earth is 4.25 light-years away.
about how many miles is this?
give your answer in standard form.
Answer:
24 trillion miles. The nearest-known exoplanet is a small, probably rocky planet orbiting Proxima Centauri – the next star over from Earth. A little more than four light-years away, or 24 trillion miles.
The number of miles in 4.25 light-years will be 24.986 × 10¹² miles.
What is conversion?Conversion means to convert the same thing into different units.
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
The nearest-known exoplanet from the earth is 4.25 light-years away.
We know that 1 lightyear = 5.879 × 10¹² miles.
Then the number of miles in 4.25 light-years will be
⇒ 4.25 light-years
⇒ 4.25 × 5.879 × 10¹² miles
⇒ 24.986 × 10¹² miles
The number of miles in 4.25 light-years will be 24.986 × 10¹² miles.
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Which would indicate the water in a lake is not safe for drinking
Answer:
The water in a lake is not safe for drinking, high turbidity levels in the lake Coliform bacteria occur innately in soil and in the intestines of humans and other organism.
CORRECT ANSWER: high turbidity levels in the lake.
Step-by-step explanation:
HELP IM STUCK ON THIS
Answer: Let's just say that each of the units are 1 inch in sides, and since it's an irregular shape you have to separate each shape. So, the rectangle I separated is 14 inches.
The semicircle is 12.56.
Adding those two answers together comes out to 26.56.
A ball is dropped from a height of 600 feet. The function describing the height of the ball at t seconds after it dropped is [tex]f(t)=-16t^2+600[/tex].
a) Find the average velocity of the object during the first 3 seconds.
b) Verify that at some time during the first 3 seconds the instantaneous velocity equals the average velocity. Find that time.
The average velocity: _ ft/sec
The instantaneous velocity equals to the average velocity at t = _ sec
The average velocity of the object after during the first three seconds is: 48m/s
The time at which the instantaneous velocity equals the average velocity within the first three seconds is 1.5 seconds.
What is instantaneous and average velocities?Instantaneous velocity is the speed of an object at a particular point in time.
Average velocity is the velocity of an object after covering a certain distance for a period of time
Analysis:
Given
initial height = 600 feet
Height with respect to time = f(t) = -16[tex]t^{2}[/tex] + 600
a) Height at t = 0 = 600 feet
Height at t = 3 seconds = f(3) = -16[tex](3)^{2}[/tex] + 600 = 456 feet
Distance travelled = 600 - 456 = 144 feet
Average velocity = distance travelled/time taken = 144/3 = 48 feet/seconds
b) instantaneous velocity at time t = [tex]\frac{df(t)}{dt}[/tex] = [tex]\frac{d(-16t^{2} + 600) }{dt}[/tex] = -32t
when instantaneous velocity equal average velocity
-32t = -48
t = 1.5 seconds
In conclusion, the Average velocity after 3 seconds is 48 feet per seconds and the time taken for the average velocity to equal the instantaneous velocity is 1.5 seconds.
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Which equation is the inverse of y = x2 – 36? y = plus-or-minus startroot x endroot 6 y = plus-or-minus startroot x 36 endroot y = plus-or-minus startroot x endroot 36 y = plus-or-minus startroot x squared 36 endroot
The inverse of the given function is expressed as y = ±√x + 38
Inverse of an equationGiven the equation below expressed as:
y = x² - 36
Replace y with x
x = y² - 38
Add 38 to both sides of the equation
x + 38 = y² - 38 + 38
y² = x + 38
Take the square root of both sides
√y² = ±√x + 38
y = ±√x + 38
Hence the inverse of the given function is expressed as y = ±√x + 38
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Answer:
B on edge 2022
Step-by-step explanation:
took the quiz
Drag numbers to the table so it shows a proportional relationship between x and y.
PLEASE HELP
Answer:
See below ~
Step-by-step explanation:
Finding the proportionality constant, k :
y = kxTake the point (0.5, 3)3 = 0.5kk = 6Table :
[tex]\left[\begin{array}{ccc}0.5&3\\1.5&9\\4.5&27\end{array}\right][/tex]
What is the solution to the linear equation? 6k 10. 5 = 3k 12 k = 0. 5 k = 2 k = 7. 3 k = 9.
The solution of the liner equation 6k + 10.5 = 3k + 12 is k = 1/2.
What is Linear Equation?Linear equations are equations of the first order. The linear equations are defined for lines in the coordinate system. When the equation has a homogeneous variable of degree 1 (i.e. only one variable), then it is known as a linear equation in one variable.
Here, 6k + 10.5 = 3k + 12
6k - 3k = 12 - 10.5
3k = 1.5
k = 1.5/3
k = 1/2
Thus, The solution of the liner equation 6k + 10.5 = 3k + 12 is k = 1/2.
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Which of the following figures uses the SSS theorem to prove that AEFG SAHIJ?
Answer:
W.
Step-by-step explanation:
SSS, or Side-Side-Side is used to prove two triangles similar
Figure W. is the only one that uses three side marks, all of the others use at least one angle to prove them similar.
If the perimeter of a pool is 102ft, and the length is 6 more than twice the width, what are the dimensions?
There are 90 people going on this feild trip. The budget allows for $542.94 total for tickets to the Buccaneers game. There is a service fee of $45.82. How much does each ticket cost?
which represents possible choices for the third missing side of the triangles given the other two sides?
1st side 30ft
2nd side 21ft
answer choices
a 9ft<51ft
b 9ft
c 30ft
d 0ft
Based on the triangle inequality theorem, the possible length of the third side of the triangle is: 9 < x < 51
What is the Triangle Inequality Theorem?The triangle inequality theorem states if a and b are two sides of a triangle, the possible length of the third side would be: a + b < x < a - b.
Two given sides of the triangle are 30 ft and 21 ft. The possible length of the third side of the triangle would be:
30 - 21 < x < 30 + 21
9 < x < 51
Possible length of the third side would range between: 9 < x < 51
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I already answered one please answer the rest
Given zy = 4 and x² + y² = a, which expression is equal to (x + y)²?
The value of the given expression will be equal to ( x + y )² = a + 8.
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.
Given that:-
xy = 4 and x² + y² = aThe expression will be calculated as:-
( x + y )² = x² + y² + 2 xy
( x + y )² = a + 2 x ( 4 )
( x + y )² = a + 8
Therefore the value of the given expression will be equal to ( x + y )² = a + 8.
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In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 95% of molds filled by this machine will hold weights in what interval
95% of molds filled by this machine will hold weights in are within 1106 pounds to 1194 pounds
What is an empirical rule?The empirical rule states that for a normal distribution, about 68% are within one standard deviation from the mean, 95% are within two standard deviation from the mean and 99.7% are within one standard deviation from the mean
Given a mean of 1150 pounds and a standard deviation of 22 pounds. Hence:
95% are within two standard deviations of the mean = 1150 ± 2(22) = (1106, 1194)
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Answer:
1106 - 1194
Step-by-step explanation: