Answer:
{ 1 , 2 , 3 , 4 }Explanation:
Domain and Range:Let R be a relation from A to B. Then the set of first components or the set of elements of A are called domain and the set of second components or the set of elements of B are called the range.
Hope this helps...
Good luck on your assignment..
Kevin cuts lawns during the summer months. He charges $10 plus $5 per hour. The algebraic model is C = 5h + 10, where C represents the total cost and h represents the hours worked. Use pencil and paper to create a table of values for hours worked from 1 to 5, incrementing h by 1 in each row.
Answer:
We have;
Hours (h), Total cost C
1, 5*1 + 10 = $15
2, 5*2 + 10 = $20
3, 5*3 + 10 = $25
4, 5*4 + 10 = $30
5, 5*5 + 10 = $35
Step-by-step explanation:
The given parameters are;
Kevin's fixed charge for lawn cutting = $10
Kevin's charge for lawn cutting per hour = $5
The total cost, C, for cutting lawn cutting by Kevin is C = 5h + 10
Suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. On a typical Saturday, the oil-change facility will perform 4545 oil changes between 10 A.M. and 12 P.M. Treating this as a random sample, at what mean oil-change time would there be a 10% chance of being at or below? This will be the goal established by the manager. There would be a 10% chance of being at or below nothing minutes. (Round to one decimal place as needed.)
Answer:
The answer is given below
Step-by-step explanation:
The mean (μ) = 21.2 minutes and the standard deviation σ = 3.5 minutes.
the oil-change facility will perform 45 oil changes between 10 A.M. and 12 P.M, therefore the sample size n = 45
there be a 10% chance of being at or below. From the normal distribution table, The z score corresponding to a probability of 10% (= 0.1) is -1.28.
z = -1.28
To calculate the mean oil-change time, we use the formula:
[tex]z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n} } }\\\\ Substituting \ values:\\-1.28=\frac{x-21.2}{\frac{3.5}{\sqrt{45} } }\\\\x-21.2=-0.6678\\\\x=-0/6678+21.2\\\\x=20.5[/tex]
The graph of the equation y=-2 is a line Explain your answer 1) parallel to the x-axis 2)parallel to the y-axis 3)passing through the origin 4) passing through the point (-2,0)
Answer:
Parallel to the x-axisStep-by-step explanation:
Given the graph of the equation y = -2. To determine how the line will look like on Cartesian plane, first we must understand the following;
The standard form of equation of a line is y = mx+c where m is the slope and c is the intercept. Comparing this standard form to the given equation shows that the equation is in slope-intercept form.
It can also written as y = 0x-2. This shows that slope m = 0 and the y-intercept c = -2. The graph can be graphed as y = 0x-2
The line will be an horizontal line drawn on the negative y-axis at the coordinate x = 0 and y = -2. The line will therefore be parallel to the x axis
Check the attachment for the graph.
The graph of the equation [tex]\boldsymbol{y=-2}[/tex] is a line parallel to the [tex]\boldsymbol{x-}[/tex]axis
A graph is a pictorial representation of data or values in a well - organized manner.
The graph of the equation passes through a point [tex]\boldsymbol{(a,b)}[/tex] if it satisfies it.
The graph of the equation of the form [tex]\boldsymbol{x=a}[/tex] is parallel to the [tex]\boldsymbol{y-}[/tex]axis.
The graph of the equation of the form [tex]\boldsymbol{y=a}[/tex] is parallel to the [tex]\boldsymbol{x-}[/tex]axis.
So, the graph of the equation [tex]\boldsymbol{y=-2}[/tex] is a line parallel to the [tex]\boldsymbol{x-}[/tex]axis
Option 1) is correct.
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how can knowledge of circles apply to daily life??
Answer:
sdgsdgsdgsdgsdgsd
Step-by-step explanation:
gsdgsdgsdgsdgsd
Mia got 24 out of 30 problems
correct. What percent is this?
Answer:
80% (see below)
Step-by-step explanation:
24:30
24 ÷ 30 = 0.8
0.8 = 80%
Hope this helped! :)
Answer:
80%
Step-by-step explanation:
Step 1: Find the fraction she got correct
24/30 = 4/5
Step 2: Find the decimal
4/5 = 0.8
Step 3: Convert to percentage by multiplying by 100
0.8(100) = 80%
Jan threw a javelin. h(d) the height of the tip of the javelin (in meters) as a function of its horizontal distance (in meters) d from the throwing arc. Match each statement with the feature of the graph that most closely corresponds to it.
Answer:
x - intercept -> Jan threw the javelin to a distance of 90 meters
relative maximum or minimum -> the highest point the javelin reached was 14 meters above the ground
increasing or decreasing interval -> Jan threw the javelin a distance of 90 meters
Step-by-step explanation:
x - intercept is where y = 0. Check where y is 0. At x = 90. Meaning it's Jan threw the javelin to a distance of 90 meters
relative maximum or minimum -> there is only a maximum on the graph, look at how the points never go down and back up, but rather up then down.
increasing or decreasing interval is basically just the interval or the x values and they go to 90 so..
The current value of a car is given by y = -2000x + 25000, where x represents the number of years after the car was first purchased and y represents the current market value of the car. Explain the significance of the slope and y-intercept of this equation.
Answer:
The slope shows how much money the car decreases by each year. (Every year after the car was first purchased the value of it goes down by $2,000) The y-intercept tells what the starting price of the car was. ( they bought it for $25,000)
Step-by-step explanation:
Algebra
y=mx+b
Plz work this out ASAP plz
Answer:
0.143059
Step-by-step explanation:
[tex]\dfrac{\sqrt{19 + 6^2}}{7.2^2} =[/tex]
[tex]= \dfrac{\sqrt{55}}{51.84}[/tex]
[tex] = 0.143059 [/tex]
(not a joke question) 81 1/4 is equal to 2. true or false and please explain why!
Answer:
Fasle
Step-by-step explanation:
81 1/4s would be 81/4 which would be 20 and 1/4
Solve the system of equations by substitution.
2m - 7n = -18.5
m = 10 - 2n
The figure is not trying to scale. PQ and MN are straight lines. Find X
given that CFE = CFA, CFB = 68, and EFD = 62, find the measure of AFD HURRY PLEASE, IM TIMED!!!
Answer:
D
Step-by-step explanation:
Answer:
C
Please give brainliest, I explained in the comments
Step-by-step explanation:
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. Match the pairs of polynomials to their products.
Answer:
(2xy +x+y)(3xy² -y)
= 6x²y³ -2xy²+ 3x²y² -xy +3xy³ -y²
(xy+3x+2)(xy-9)
= X²y² -7xy+3x²y -27x-18
(x²+3xy-2)(xy+3)
= X³y + 3x² + 3x²y² +7xy -6
Step-by-step explanation:
For (xy+9y+2) and (xy-3)
(xy+9y+2) (xy-3)
= x²y² -3xy +9xy² -27y + 2xy -6
= x²y² -xy +9xy² -27y -6
For (2xy +x+y)(3xy² -y)
= 6x²y³ -2xy²+ 3x²y² -xy +3xy³ -y²
For (x-y)(x+3y)
= X² + 3xy -xy -3y²
= X² +2xy -3y²
For (xy+3x+2)(xy-9)
= X²y² -9xy +3x²y -27x+2xy -18
= X²y² -7xy+3x²y -27x-18
For (x²+3xy-2)(xy+3)
= X³y + 3x² + 3x²y² +9xy -2xy -6
= X³y + 3x² + 3x²y² +7xy -6
47:PLEASE HELP Find the y-intercept of -x +2y=20
Answer:
(0,10)
Step-by-step explanation:
-x + 2y = 20
2y = x +20
y = 1/2x + 10
This is slope-intercept form. The y-intercept is 10.
(0,10)
Answer:
(0, 10)
Step-by-step explanation:
Can be simplified to
2y = x+20 by adding x to both sides
then divide by 2 to get to slope intercept form: y = ax+b
b is the y-intercept
y = 1/2x + 10
so the answer is 10
Can someone help me
10 pts
Answer:
x=7
Step-by-step explanation:
If BD is the bisector, then ABD = DBC
3x-1 = 34-2x
Add 2x to each side
3x-1+2x = 34-2x+2x
5x-1 =34
Add 1 to each side
5x-1+1 = 34+1
5x= 35
Divide by 5
5x/5 = 35/5
x = 7
What is the area of the trapezoid?
30 square units
60 square units
90 square units
120 square units
Answer:
60 square units
Step-by-step explanation:
We can bound the trapezoid with a rectangle having opposite corners at (4, 6) and (16, 16). This rectangle will have an area of (16 -4)(16 -6) = 120 square units.
From this bounding rectangle we can subtract the areas of the corner triangles. Their x-y extents (CW from upper left) are ...
(10×6), (2×6), (6×4), (6×4)
Their areas are half the product of these base×height dimensions, so the triangles have a total area of ...
(1/2)(60 +12 +24 +24) = 60
Then the area of the trapezoid is the difference of the area of the bounding rectangle and the area of the corner triangles:
trapezoid area = 120 -60 = 60 . . . . square units
13. Fill in this diagram so that each of the rows, columns and
diagonals adds to 18.
What is the sum of all the corner numbers?
(A) 20
(B) 22
(C) 23
(D) 24
(E) 25
Answer:
D. 24
Step-by-step explanation:
Let's name the diagram
Row 1: a1, a2, a3
Row 2: b1, b2, b3
Row 3: c1, c2, c3
From the diagram,
b2 and c2 have been given
All rows, columns and diagonal must sum up to 18
If b2=6 and c2=4
a2=18-(6+4)
=18-10
=8
a2=8
Assume a1=4
Diagonals a1+b3+c3=18
4+6+c3=18
10+c3=18
c3=18-10
=8
Assume a3=6
Diagonals a3+b2+c1=18
6+6+c1=18
12+c1=18
c1=18-12
=6
So b1=18-(6+4)
=18-10
=8
b1=8
b3=18-(6+8)
=18-14
=4
b3=4
Input all the numbers into the boxes
We have,
4 8 6
8 6 4
6 4 8
Corner numbers are a1,a3,c1,c3
=4,6,6,8
Sum of all the corner numbers=4+6+6+8
=24
D. 24
The summer has ended and it’s time to drain the swimming pool. 20 minutes after pulling the plug, there is still 45 000L of water in the pool. The pool is empty after 70 minutes.
Hi,
it'took 70 minutes to empty the pool.
After 20 it's stay 45 000 litres. So in 50 minutes, 45 000 litres are gone.
So : 45 000 / 50 = 4500/5 = 9*5 *100 /5 = 900
900 litres is off every minute.
So the pool contained : 900 *70 = 63 000 litres in the beginning.
In the figure, angle A measures 45° and angle E measures 15°.
The measurement of angle C is___
The measurement of angle D is___
Answer:
m<C = 45
m<D = 30
Step-by-step explanation:
m<A + m<B + m<C = 180
45 + 90 + m<C = 180
m<C = 45
m<E + m<A = 60
60 + 90 + m<D = 180
m<D = 30
Identify the parts relating to CircleA. What is Line F G? Secant What is Line segment D B? Tangent What is Line segment D H? Secant What is AC? Radius
Answer:
Line FG secant
Line segment DH secant
Line segment DB tangent
Line segment AC radius
Step-by-step explanation:
A Secant is a line that passes through the two points on a circle.It cuts the circle on two points.
Line FG is a secant as it passes through two pints.
Line segment DH is also a secant as it passes through two points.
A tangent is a line that passes through only one point on a circle. It is outside the circle. It is perpendicular to the radius at the point where it touches the circle.
Line segment DB is a tangent as it passes through only one point.
Radius is the line segment joining the center of the circle and any point on the circumference of the circle. It is half of the diameter.
Line segment AC is a radius as it joins the center of the circle with the circumference.
Answer:
1) FG -- Secant
2) DB -- Tangent
3) DH -- Secant
4) AC -- Radius
Step-by-step explanation:
14. What is the percent decrease on a DVD recorder that is marked down from $400 to $350?
1. 87.5%
2. 20%
3. 12.5%
5. 14.29%
Answer:
12.5%
Step-by-step explanation:
Percent decrease is calculated as
[tex]\frac{decrease}{original}[/tex] × 100%
Decrease = $400 - $350 = $50 , thus
percent decrease = [tex]\frac{50}{400}[/tex] × 100% = [tex]\frac{50(100)}{400}[/tex] = 12.5%
The percent decrease on a DVD recorder that is 12.5%. The correct option is 3
What is the percentage?A percentage is a minimum number or ratio that is measured by a fraction of 100.
let the value of which a thing is represented in percentage is "a'
let the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), therefore we will first divide the whole part in 100 parts and then we multiply it with b so that we can get b items per 100 items(that is exactly what b per cent means).
Hence, that thing in number is
(a/100)x b
Percent decrease is calculated as;
Decreased in price/original price × 100%
Decrease = $400 - $350 = $50 , thus
Therefore, percent decrease = 50/400 × 100%
= 12.5%
Learn more about percentages;
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solve for x. Write both solutions, separated by a comma. 9x^2-6x-8=0 please help me
Answer:
(-0.667,0), & (1.333,0)
Step-by-step explanation:
The equation creates two parallel lines on a graph that both have x-intercepts of (-0.667,0) & (1.333,0). So x = (-0.667,0), (1.333,0).
Hopefully this helps & gets brainliest.
PLZZZZZ HLPPPPP MEEEEEEEEEE NOW <3
Answer:
[tex]g(x) = x^{2} + 6\cdot x + 7[/tex]
Step-by-step explanation:
The blue parabola is only a translated version of the red parabola. The standard form of a vertical parabola centered at (h,k), that is, a parabola whose axis of symmetry is parallel to y-axis, is of the form:
[tex]y - k = C\cdot (x-h)^{2}[/tex]
Where:
[tex]h[/tex], [tex]k[/tex] - Horizontal and vertical components of the vertex with respect to origin, dimensionless.
[tex]C[/tex] - Vertex constant, dimensionless. (If C > 0, then vertex is an absolute minimum, but if C < 0, then vertex is an absolute maximum).
Since both parabolas have absolute minima and it is told that have the same shape, the vertex constant of the blue parabola is:
[tex]C = 1[/tex]
After a quick glance, the location of the vertex of the blue parabola with respect to the origin is:
[tex]V(x,y) = (-3,-2)[/tex]
The standard form of the blue parabola is [tex]y+2 = (x+3)^{2}[/tex]. Its expanded form is obtained after expanding the algebraic expression and clearing the independent variable (y):
[tex]y + 2 = x^{2} +6\cdot x + 9[/tex]
[tex]y = x^{2} + 6\cdot x + 7[/tex]
Then, the blue parabola is represented by the following equations:
[tex]g(x) = x^{2} + 6\cdot x + 7[/tex]
Latisha worked for six hours and 45 minutes how should she write that on her time card
Answer:
Hey there!
6 hrs 45 mins = 405 mins, or 6.75 hours.
Hope this helps :)
Peggy has twice as many apples as kiwis, and three times as many pears as apples. How many pears does she have, if she has 72 apples, kiwis and pears all together?
Answer:
Let's do this step by step
Since there are 72 apples, the pears are 3 times as much. So multiply by 3
[tex]72 * 3=216[/tex]
So there would be 216 pears.
Now for Kiwis
They are 2 times as much, Multiply by 2
[tex]72 *2=144[/tex]
All together with the kiwi and the pears are
[tex]216+144=360[/tex]
And all the fruits together it would be
432
Hope this helps
Answer by
Fishylikeswater
The number of pears, apples and kiwis Peggy has is 216, 72 and 144 respectively.
How many pears does she have?Number of apples = 72 apples
Number of kiwis = 2 × 72
= 144 kiwis
Number of pears = 72 × 3
= 216 pears
Therefore, Peggy has 144 kiwis
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Please answer this in two minutes
Answer:
Tan(x) = 1/[tex]\sqrt{3}[/tex]
We know that Tan 30 = 1/[tex]\sqrt{3}[/tex]
Therefore, x = 30 degrees
PLS HELP ME IVE BEEN TRYING
Answer:
try and let me know is it correct or not line A-4 lineB-8
Step-by-step explanation:
i also use mathswatch
What is the surface area of the right cone below?
Answer: D) 339 sq. units
Step-by-step explanation:
see attachment
The side lengths of a square are each 3p. By adding 5 to the length and subtracting 5 from the width, a rectangle is made. What is the area of the rectangle?
Answer:
A = 9p² - 25
Step-by-step explanation:
The side lengths were 3p. 5 was added to the length and subtracted from the width. This means that
l = 3p + 5
w = 3p - 5
Plug these values into the formula for the area of a rectangle.
A = lw
A = (3p + 5)(3p - 5)
A = 9p² - 25
The area of the rectangle is 9p² - 25.
One advantage to using your debit card is: A:You don’t have to subtract it from your checking account balance B: It is convenient C:You can spend as much as you want D:You can give your friend the PIN number in case you forget it. Plz help me
Answer:
B.
Step-by-step explanation:
First, you never want to give out your banking information to anyone, so D is incorrect. A is incorrect because a debit card withdraws money from your checking account to pay for items you purchase. C is also incorrect because you can only spend the same amount of money in your checking account.