We can find whether three points are coplanar by using vector approach.
What is Coplanar?In geometry, a of group points in space are coplanar if there exists a geometric plane that contains them all. For instance, three points are always coplanar, and if the points are distinct and non-collinear, the plane they exist is unique.
We can check whether the given point F,Q and P are coplanar by first forming vectors of the each given point. The vector form for general point (a,b,c) can be written as [tex]a\hat{i}+b\hat{j}+c\hat{k}[/tex].
The vector forms of point F,Q and P can be given as 'f', 'q' and 'p'. The scalar triple product of the vectors 'f', 'q' and 'p' can be found out by finding the scalar product of vector 'f' with the cross product of the vectors 'q' and 'p' .
For the points F,Q and P to be coplanar the triple scalar product must be zero else the points are not coplanar.
This implies f·(q×p)=0 must be satisfied for three points to lie on the same plane.
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The correct question is " How can you say points F, Q and D are coplanar?"
Determine whether the value of the variable is a solution of the equation -2(2m-8)=-2(-6m-8);m=0
Answer:
The variable m is not a solution of the equation -2(2m-8)=-2(-6m-8);m=0. Give brainly if I helped!
Step-by-step explanation:
What to do if B is negative in a transformation? Does it become a positive fraction or stay a negative fraction when reflected over the y axis?
Step-by-step explanation:
what is B in your question ? you did not tell us.
since you mention "fraction", I assume B is the slope of a line ?
if that is the case, please remember, the slope is (y coordinate change / x coordinate change) when going from one point of the line to another.
the way you phrased it I assume the slope was originally negative.
that means either the y difference or the x difference was negative (but not both, otherwise it would have been a positive fraction again).
let's look at what happens, when things get reflected across the y axis :
things go from the left side (negative x values) to the right side (positive x values) of the y axis or vice versa.
and things stay on the same side of the x axis (either above the x-axis with positive y values, or below the x-axis with negative y values).
so, that reflection causes the x values to flip their sign, but the y values stay the same.
so, if y was originally negative, then x must have been positive. after the reflection x is now negative too, that makes the y/x fraction -/- = +/+ positive.
if y was originally positive, then x must have been negative. after the reflection x is now positive too, that makes the y/x fraction +/+ positive.
therefore, in every case, the reflected slope fraction must be positive.
Complete the statement of the distance formula.
DISTANCE FORMULA The distance AB between two points A(x₁, y₁) and B(x₂, y₂) in a
coordinate plane is given by the equation:
AB =
Answer:
[tex] \sqrt{(x2 - x1) ^{2} } + (y2 - y1) {}^{2} [/tex]
Solve for the missing part of the proportion. 1327 = ?324
Answer:
156
Step-by-step explanation:
1. cross multiply
2. Divide both sides
i hope i helped
Cement is poured into a hemisphere that is 6cm across. What is the volume of cement used?
hope the picture makes sense. I think it's right (no expert) if u want me to explain just ask. the answer is circled. usually the question would ask you to round so i wrote the full version
V=1/3πr2(h-1) solve for h with work shown please
Answer:
which mountain is known as Nepal Himal?
MARKS BRANLIEST TO WHOEVER ANSWERS FIRST, CHECK SCREENSHOT
The sequence of the angles from least to biggest is ∠WXY < ∠YXZ < ∠WYX < ∠XZY < ∠XYZ.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
In a triangle, if the angle is small then the opposite side will be short, and if the angle increases then the side also increases.
The sides of the triangle are in ascending order, then we have
WY < YZ < WX < XY < XZ
Then the sequence of the angles is given as,
∠WXY < ∠YXZ < ∠WYX < ∠XZY < ∠XYZ
The sequence of the angles from least to biggest is ∠WXY < ∠YXZ < ∠WYX < ∠XZY < ∠XYZ.
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a. What is the solution of this system of equations? 3x + 7y = 15 , 5x +2y = -4.
The solution of the system of equations involving 3x + 7y = 15 and 5x + 2y = -4 is (-2 , 3).
A system of linear equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy both equations.
There are three methods that can be used to solve system of linear equations.
1. Elimination
2. Substitution
3. Graphing
Using substitution method, given two linear equations in x and y,
3x + 7y = 15 (equation 1)
5x + 2y = -4 (equation 2)
Using the first equation, find the value of one variable, lets say x, in terms of the other.
3x + 7y = 15 (equation 1)
3x = 15 - 7y
x = 5 - (7/3)y
Substitute the equation of x to the second equation.
5x + 2y = -4 (equation 2)
5[5 - (7/3)y] + 2y = -4
25 - (35/3)y + 2y = -4
Combining all terms containing the variable y on one side and the constants on the other side of the equality, and solving for y.
25 - (35/3)y + 2y = -4
- (35/3)y + 2y = -4 - 25
-(29/3)y = -29
y = 3
Substitute the value of y in the equation of x.
x = 5 - (7/3)(3)
x = 5 - 7
x = -2
Hence, the solution of the given system of equations is (-2 , 3).
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please help and answer correctly need to get and A or B atleast!!
Answer:
Part1: 4.25 + 4.00x = 12.25
Part2: 2 lbs. of potato salad. The customer bought 2 lbs because you subtract 4.25 from 12.25 and are left with $8. You would then divide 8$ by 4 and end up with 2
According to the Handbook for Public Playground Safety, the ratio of the vertical distance to the horizontal distance covered by a slide should not be more than about 4 to 7 . If the horizontal distance allotted in a slide design is 14 feet, approximately how long should the slide be?
The length of the slide should be approx. 16 ft long.
Pythagoras Theorem states that sum of square of two sides of triangle is equal to the square of longest side of the right angle triangle..
From the given figure
we will use ratio to find the vertical distance
given that vertical/horizontal=4/7
[tex]\frac{vertical.distance}{horizontal.distance} =\frac{vertical.distance}{horizontal.distance}[/tex]
[tex]\frac{4}{7} =\frac{v}{14}[/tex]
By cross multiplying we get v=8 feet.
As we can see in the figure that Vertical distance, Horizontal distance and the Slide forms a Right angled Triangle.
Pythagoras Theorem can be used to find the length of the slide.
Applying Pythagoras Theorem in ΔABC
[tex]AB^{2} +BC^{2} =AC^{2}[/tex]
given that AB=14 and BC=8
Substituting in the above equation we get
[tex](14)^{2} +8^{2} =AC^{2} \\\\ 196+64=AC^{2} \\ \\ 260=AC^{2}[/tex]
[tex]AC=\sqrt{260}=16.12[/tex]
approx. 16 feet
Therefore , the length of the slide should be approx. 16 ft long.
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Factories: a factory produces 6 motorcycles in 9 hours. Write a proportion and solve it to find how many hours it takes to produce 16 motorcycles.
Answer: x=24
6:9, 16 is to x = 16:x
6/9=16/x
multiply both sides by x
6x/9=16
multiply both sides by 9
6x=144
divide by 6
x=24
Answer:
6 motorcycles/ 9 hours = 16 motorcycles/x hours
to complete a proportion you need to multiply the cross products
9(16)=6x
144=6x
144/6=6/6 x
24=x
it will take 24 hours to produce 16 motorcycles
Physical science
Your dog takes off from your house after seeing a cat run across the street. If your dog started from rest and achieved 5.5 m/s in 3 seconds, what is the acceleration of your dog?
The acceleration of the dog is approximately 1.83 meter per second² .
Acceleration is defined as the rate of change of velocity . The change in velocity per unit time is acceleration.
The formula to calculate acceleration is given by acceleration = velocity ÷ time.Negative acceleration is called deceleration.Acceleration can be uniform or non-uniform.In the given problem the dog started from rest and achieved the final velocity of 5.5 m/s.
Let us use Newton's laws to write the equation:
v = u + at , where v is the final velocity , u is the initial velocity , a is acceleration and t is time.
The dog starts from rest so the initial velocity is 0.
given v=5.5 /s and t = 3 seconds
putting the values we get:
v = u + a t
or , 5.5 = 0 + 3a
or, a = 5.5/3 meters per seconds²
or, a = 1.8333... m/s²
or, a ≈ 1.83 m/s²
The acceleration of the dog is 1.83 m/s²
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Find the common difference or ratio.
20, 10,__,2.5,__
Malika was given a gift card for a coffee shop. Each morning, Malika uses the card to buy one cup of coffee. Each cup of coffee costs $2.50 and the original amount of money on the gift card was $45. Make a table of values and then write an equation for A,A, in terms of x,x, representing the amount money remaining on the card after buying xx cups of coffee.
The expression representing the amount remaining will be 45 - 2.50x.
Table of values
At x = 1 Amount = 42.50
At x = 2 Amount = 40.
How to illustrate the information?From the information, Malika uses the card to buy one cup of coffee. Each cup of coffee costs $2.50 and the original amount of money on the gift card was $45.
Therefore, the expression representing the amount remaining will be:
A = 45 - (2.50 × x)
A = 45 - 2.50x
At x = 1 Amount remaining will be:
= 45 - 2.50
= 42.50
At x = 2
A = 45 - 2.50x
A = 45 - 2.50(2)
= 40
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Write each arithmetic series in summation notation. (-3)+(-6)+(-9)+. . . . . . +(-30)
The algebraic expression or sigma (summation) notation is given by:
∑ = 10(-3 - 30)/2
And its value is ∑ = -165
What is sigma notation?The sigma notation is a mathematical operation used to determine the final value of the sum of "n" terms consecutively, when dealing only with numbers without variables this is known as an arithmetic series.
The equation for this type of problem is:
∑ = n(a1 + an)/2
n : number of termsa1 : first terman : last termOur values are:
(-3)+(-6)+(-9)+. . . . . . +(-30)
a1 =-3an = -30n = 10∑ = 10(-3 - 30)/2
∑ = 10(-33)/2 = 5(-33)
∑ = -165
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At a carnival, the object of a game is to throw a dart at the board and hit region III.
d. What is the probability that it hits region IV?
The probability that it hits region IV is 30%.
Probability:
Probability means the possibility of the particular event.
And it can be calculated as,
P(A) = n(A)/n(S)
Where,
P(A) is the probability of an event “A”
n(A) is the number of favorable outcomes
n(S) is the total number of events in the sample space.
Given,
At a carnival, the object of a game is to throw a dart at the board and hit region III.
Here we need to find the probability that it hits region IV.
Consider the board was look like the following figure.
Then based on the given figure,
First, we have to find the total area of the board and the area of the required region.
And then we have to compare it to calculate the Probability.
So, the total area of the board is,
=> total area of the board = (10 + 30)(10 + 15)
=> total area of the board = 1000 in²
Now, the The area of the region IV is
=> Area = (10)(30)
=> Area = 300 in²
Therefore, the probability that it hits region IV is
=> P = 300/1000
=> P = 30/100
=> P = 30%
Therefore, the probability that it hits region IV is 30%.
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help pls
-4|w-1|=-8
solve for w
Answer:
w= 3, -1
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
w can be either 3 or -1
Step-by-step explanation:
-4 |w-1| = -8
Divide both sides by -4
List both cases
|w-1| = 2 |w-1| = -2
w = 3 w = -1
For what domain intervals is the function y= |x-1| increasing and/or decreasing?
For the domain -1 < x < ∞ and -∞ < x < -1, the function y= |x+1| is increasing and decreasing, respectively.
It must be identified for which domain intervals the function y= |x+1| increases or decreases, as stated in the question.
Since,
Accoding to the question of the given function, y= |x+1|
Assigned functions is an absolute functions,
Whose domain is all real numbers from negative infinity to positive infinity
And Plotting the function's graph reveals that it decreases from -∞ to -1 and grows from -1 to ∞ .
Thus, For the domain -1 < x < ∞ and -∞ < x < -1, the function y= |x+1| is increasing and decreasing, respectively.
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Total surface Area of cross or soiled cylinders
The cylinder's total surface area includes the area of the curving surface as well as the areas of the two circle-shaped bases of the cylinder.
The area of the two bases and the area of the curved surface are added to determine the cylinder's total surface area. Consequently, the following is the formula for the cylinder's total surface area:
Area of the two bases plus the area of the curved surface equals the cylinder's total surface area. Due to the cylinder's round bottoms, their combined area will be equal to r2 + r2. We already know that a cylinder's curved surface area is 2rh.
(r2 + r2 + 2rh) is the cylinder's total surface area.
⇒ 2πr2 + 2πrh
Total surface area of cylinder = 2πr(r+h)
where,
r = radius of the cylinder
h = height of cylinder
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Evaluate each expression for the given values of the variables.
-k² - (3k - 5n) + 4n ; k=-1 and n=-2
The result of the expression [tex]-k^{2}-(3k+5n)+4n[/tex] for the variable k= -1 and n= -2 is -16
Given,
The expression =[tex]-k^{2}-(3k-5n)+4n[/tex]
We know
k= -1
n= -2
Substitute the values in the expression
[tex]-(-1)^{2}-(3(-1)-5(-2))+4(-2)[/tex]= -1-(-3+10)-8
=-1-(7)-8
=-1-7-8
=-16
Hence, The result of the expression [tex]-k^{2}-(3k+5n)+4n[/tex] for the variable k= -1 and n= -2 is -16
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PLEASEE HELPP MEE
EHTS THE ANSWER WITH THE WORKK
5x - 4 = 1/2 (4x + 8 )
Answer:
х=8/3 solution on screen
Step-by-step explanation:
Good luck
Disc golf is similar to regular golf, except that a flying disc is used instead of a ball and clubs. For professional competitions, the maximum weight of a disc in grams is 8.3 times the diameter in centimeters. What is the maximum allowable weight for a disc with circumference 66.92 centimeters? Round to the nearest tenth.
The maximum allowable weight for a disc with circumference 66.92 centimeters Round to the nearest tenth is 176.9 grams.
What is circumference of circle?A circle's outside boundary is called the circumference and can be measured, or calculated, by using
Circumference = 2πr
where r is the radius of circle.
Now it is given that,
the maximum weight, w of a disc in grams is 8.3 times the diameter, d in centimeters
⇒ w ≤ 8.3d
and the maximum allowable weight for a disc with circumference 66.92 centimeters
So, Circumference = πd [∵ d = 2r]
∴ 66.82 = πd
⇒ d = 66.82π
Thus, w ≤ 8.3*66.82π grams
⇒ w ≤ 176.89 grams
Round to the nearest tenth, w ≤ 176.9 grams
Thus, the maximum allowable weight for a disc with circumference 66.92 centimeters Round to the nearest tenth is 176.9 grams.
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дост
IS
8. A patio is rectangular. Its length is 8.39 meters, and its width
is 5.4 meters.
What is the approximate perimeter of the patio? Round your answer to the
nearest whole number.
140
28 m is the approximate perimeter of the rectangle patio.
What is a rectangle, exactly?
The internal angles of a rectangle, which has four sides, are all exactly 90 degrees. At each corner or vertex, the two sides come together at a straight angle. The rectangle differs from a square because its two opposite sides are of equal length.p = 2w + 2l
therefore, p = 8.39 * 2 + 5.4 * 2
p = 16. 78 + 10.8
p = 27.58
perimeter = 28 meters
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a
A
в
78⁰
37⁰
C
What is the measure of the unknown triangle?
Write the expression as a number in scientific notation. quantity 8 times 10 squared end quantity times quantity 3.2 times 10 to the fifth power end quantity all divided by quantity 4 times 10 cubed 7.2 x 107 7.2 x 104 6.4 x 107 6.4 x 104
Scientific notation exists as a method of writing very large or very small numbers. The expression as a number in scientific notation is 6.4 × [tex]$$10^4[/tex].
What is meant by scientific notation?Utilizing scientific notation, one can express extremely big or extremely small values. When a number between 1 and 10 is multiplied by a power of 10, the result is represented in scientific notation.
To express exceedingly high numbers in a shorter manner, scientists have created a shorthand. Scientific notation is the name of this technique. The foundation of scientific notation is the base-10 powers. The coefficient is defined as the initial number, 1.23.
Given: (8 ×10²) × (3.2 ×[tex]$$10^5[/tex])/4 × 10³
simplifying the above equation, we get
= 800 × 320000/4000
= 64000
= 6.4 × [tex]$$10^4[/tex]
Therefore, the expression as a number in scientific notation is 6.4 × [tex]$$10^4[/tex].
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Answer:
6.4 x 10^4
Step-by-step explanation:
What is the answer to this problem?
Answer:
The length is 120 yards, the width is 60 yards.
Step-by-step explanation:
[tex]l = 2w[/tex]
[tex]2(w + 2w) = 360[/tex]
[tex]3w = 180[/tex]
[tex]w = 60[/tex]
[tex]l = 120[/tex]
Solve each equation. 0.2(x+3)-4(2 x-3)=0.9
The solution of the given linear equation in one variable 0.2(x+3)-4(2 x-3)=0.9 is at x = 1.5.
According to the given question.
We have a linear equation in one variable.
0.2(x+3)-4(2 x-3)=0.9
As we know that, the linear equations in one variable is an equation which is expressed in the form of ax+b = 0, where a and b are two integers, and x is a variable and has only one solution.
Thereofore, the solution of the linear equation in one variable 0.2(x+3)-4(2 x-3)=0.9 is given by
0.2(x+3)-4(2 x-3)=0.9
⇒ 0.2x + 0.6 -8x + 12 = 0.9
⇒ -7.8x + 12.6 = 0.9
⇒ -7.8x = 0.9 - 12.6
⇒ -7.8x = -11.7
⇒ x = -11.7/(-7.8)
⇒ x = 1.5
Hence, the solution of the given linear equation in one variable 0.2(x+3)-4(2 x-3)=0.9 is at x = 1.5.
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What is an equation of a parabola opening left with vertex (0,0) and focus (-3,0) ?
A parabola is defined as a curve where each point is equidistant from:
fixed point (focus) and
fixed line (director).
The properties of a parabola can be defined as given below:
Rays parallel to the axis of symmetry are reflected straight from the surface to the focal point.
Because the vertex of the parabola is at (0,0) and the focus is at (-3,0).
This means that the parabola axis is the negative x-axis.
The parabola equation is x^2 =4ay and a=3.
So, the parabola equation is x^2 =12y.
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Evaluate
3 t(t+2) - 3t² for t=19 .
Answer: Substitute the value of the variable into the equation and simplify.
22743
v
a
2
l
u
e
2
−
1083
Step-by-step explanation:
2. Joel needs to solve the equation below.
Which describes the step he should take?
n² = 16
a. Divide both sides by 2
b. Take the square root of both sides
c. Square both sides
d. None of the above
Answer: B
Step-by-step explanation:
Since n is being squared, to get rid of the square you would need to square root it.
