Answer:
It's the solution for the first one, but not the second one
Step-by-step explanation:
(3,8) (x,y)
The first one works, because it does equal 20
4*3= 12+8= 20
The second one does not work, because it equals 7 and not 8
3*3= 9-2= 7
C.B. Clothing ordered sweaters at a wholesale cost of $20 each. The store marked up the price 50 percent above the wholesale cost to use as their selling price. After every month that the sweater didn't sell, the store reduced the selling price by 20 percent. After how many monthly price reductions did the price dip below the wholesale cost? after 1 monthly price reduction after 2 monthly price reductions after 3 monthly price reductions after 4 monthly price reductions
Answer: after 2 monthly price reductions
Step-by-step explanation:
Given that :
Wholesale cost = $20 each
Markup = 50%
Selling price = $20 + (50% * 20) = $30
After each month selling price reduces by 20%;
Dip in price per month for which item didn't sell ;
Let m = Number of months
$30 - 0.2(30)m = $30 - 6m
After how many monthly price reductions did the price dip below the wholesale cost?
$30 - 6m < $20
-6m < $20 - $30
-6m < - $10
m > 10/6
m > 1.667
m = 2
After 2 monthly price reduction
Answer:
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
Step-by-step explanation:
URGENT. SHOW ALL SOLUTIONS. WILL MARK BRAINLIEST!!! An octagonal based pyramid has base side lengths of 20 cm and slant height of 80 cm. What is the surface area?
9514 1404 393
Answer:
800(9 +√2) cm² ≈ 8331.4 cm²
Step-by-step explanation:
The surface area of the pyramid is the sum of the areas of the base and triangular faces.
The base area is given by ...
A = 2(1 +√2)s² . . . . . where s is the length of one side
A = 2(1 +√2)(20 cm)² = 800(1 +√2) cm²
The lateral area is given by ...
A = (1/2)Ph . . . . . where P is the perimeter of the base and h is the slant height
A = (1/2)(8)(20 cm)(80 cm) = 6400 cm²
Then the total surface area of the pyramid is ...
SA = (800(1 +√2) +6400) cm² = 800(9 +√2) cm² ≈ 8331.4 cm²
using long Division perform (a²-22a+17)÷(a-13)
Answer:
wherw are yiu coms on email kingrizvi218
if you multiply an even number and an odd number will the product be odd or even?
Answer: It will be an even number.
Step-by-step explanation: ........
Solve the system.
x + y - 3z = -20
-3y + 2z = 5
z = 4
Enter your answer as an ordered triple.
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Step-by-step explanation:
Subtract 2z2z from both sides of the equation.
x−2y+z=1x-2y+z=1
y=5−2zy=5-2z
x+y+3z=8x+y+3z=8
Replace all occurrences of yy with 5−2z5-2z in each equation.
x−2(5−2z)+z=1x-2(5-2z)+z=1
y=5−2zy=5-2z
x+5−2z+3z=8x+5-2z+3z=8
Simplify each equation.
x−10+5z=1x-10+5z=1
y=5−2zy=5-2z
x+5+z=8x+5+z=8
Move all terms not containing xx to the right side of the equation.
x=11−5zx=11-5z
y=5−2zy=5-2z
x+5+z=8x+5+z=8
Replace all occurrences of xx in x+5+z=8x+5+z=8 with 11−5z11-5z.
x=11−5zx=11-5z
y=5−2zy=5-2z
(11−5z)+5+z=8(11-5z)+5+z=8
Simplify (11−5z)+5+z(11-5z)+5+z.
x=11−5zx=11-5z
y=5−2zy=5-2z
−4z+16
Answer: (-9, 1, 4)
Step-by-step explanation:
its right on acellus
5(88) using distributive property and mental math
15 less than the quotient of a number and 6 is 30
3.3 x 10*9 +2.6 x 10*9 +7.7 × 10*8
Answer:
23.4x10+913
Step-by-step explanation:
Answer:
1147 okayyyyyyyyyyyyyyyyyyhhhhyhhhhhhyyyyyyyy
The intensity,I, of light received at a source varies inversely as the square of the distance, d, from the source. If the light intensity is 33 foot-candles at 20 feet, find the light intensity at 5fee
Answer:
The light intensity is 528 foot-candles at 5 feet
Step-by-step explanation:
If x and y are in inverse variation, then x y = k, where k is the constant of variation
In the given question
∵ The intensity I, of light received at a source, varies inversely as the
square of the distance d, from the source
→ That means I × d² = k, where k is the constant of variation
∴ I × d² = k
∵ I = 33 foot-candle at d = 20 feet
→ Substitute them in the rule above to find k
∴ 33 × (20)² = k
∴ 33 × 400 = k
∴ 13200 = k
→ Substitute the value of k in the equation
∴ I × d² = 13200 ⇒ equation of variation
∵ d = 5
→ Substitute it in the equation to find I
∵ I × (5)² = 13200
∴ I × 25 = 13200
→ Divide both sides by 15
∴ I = 528
∴ The light intensity is 528 at 5 feet
2.3915002041 rounded 2 decimal places
Answer:
2.39
Step-by-step explanation:
Answer:
2.3910000000
Step-by-step explanation:
Someone help me out please
Answer:
0.5-1
Step-by-step explanation:
what is the excluded value of x for
Answer:
value of x is for values that are excludedor or left out
I NEED HWLP CAN U HELP ME?
Answer:
y=mx+c
Step-by-step explanation:
noice
What is 4/5 divided by 3/4 ?
solve the literal equation for f: - 3f = g for f
A.f=g/-3
B.g+3=f
C.f=g-3
Answer:
i think its a
Step-by-step explanation:
The amount of concrete, c, needed to make a walkway around a circular swimming pool varies directly as the square of the diameter, d, of the
pool. Which statement is true?
OA If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 2.
•B. If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 4.
OC. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 2.
OD. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 4.
Answer:
Step-by-step explanation:
For all Plato users
The amount of concrete needed after doubling the diameter of the circle will be multiplied by 4 by the initial amount. Hence, the correct option is (B).
What are direct proportions?Direct proportions are the proportions where a variable changes with another variable by direct mean so the coefficient of constant will be direct.
For example y ∝ x² here y varies with respect to x square.
y = Kx² where k will be the coefficient of constant.
Given that amount is Amount ∝ d²
Amount = k d²
By doubling the diameter
Amount = k (2d)²
Amount = 4 kd²
Amount = 4 × initial amount hence, the amount will be multiplied by 4.
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PLEASE ANSWER THIS ASAP! What is the length of a diagonal of a cube with a side length of 3 cm?
Answer:
√27
Step-by-step explanation:
3×√3 = 5.196
√27 = 5.196
Answer:
27
Step-by-step explanation:
StartRoot 27 EndRoot cm
Due at midnight!!! Help
30 POINT QUESTION !! Will make the brainliest
The table below shows four systems of equations:
System 1 System 2 System 3 System 4
4x − 5y = 2
3x − y = 8 4x − 5y = 2
10x − 7y = 18 4x − 5y = 2
3x − 8y = 4 4x − 5y = 2
10x + 3y = 15
Which pair of systems will have the same solution? (5 points)
zero of functions equations
Answer:
what?
Step-by-step explanation:
The lengths of two sides of a triangle are 4 cm and 13 cm. Identify the range of possible lengths for the third side.
Answer:
9cm<x<17cm
Step-by-step explanation:
your welcome
The range of the possible lengths for the third side is 9 cm < x < 17 cm.
What is Triangle?A triangle is a geometrical shape which has three vertices, three edges and three angles. In other words, in Euclidean geometry, a triangle is defined as a two dimensional shape which is three non-collinear points lying on a unique plane.
The sum of the interior angles of a triangle is 180 degrees.
Here we have lengths of two sides of a triangle which are 4 cm and 13 cm.
If the length of two sides of a triangle are given, then the length of third side will lie in the range between the difference of the other two sides and the sum of the other two sides.
Let x represents the third side of the triangle.
So, here the third side lies between 13 cm - 4 cm and 13 cm + 4 cm.
13 - 4 < x < 13 + 4
9 < x < 17
Hence the range of possible lengths for the third side of the triangle is in between 9 cm < x < 17 cm.
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Find all the Missing Angles
Answer:
need more information
PLZ HELP ME ASAP!!!!
Answer:
I cant see the picture
Step-by-step explanation:
I cant see the picture
hhellp pwease I want to know what's wrong and right
Answer:
A: False
B: False
C: True
D: True
E: False
F: True
G: True
H: True
Step-by-step explanation:
A: 9(x - 2) = 9x + 2
9x - 18 = 9x + 2 FALSE
B: 65 - y = y - 65
(equation rearranged) -y + 65 = y - 65 FALSE
C: g (times) h = h (times) g (TRUE due to the commutative property of multiplication)
D: a (times) 0 = 0 (TRUE because anything times 0 equals 0)
E: (4 (times) 2) - r = 4 (2 (times) r)
8 - r = 8 - 4r FALSE
F: k + 0 = k TRUE
G: (a + x) + y = a + (x + y)
a + x + y = a + x + y TRUE
H: 5(2x - 9) = 10x - 45
10x - 45 = 10x - 45 TRUE
-3x+8y=12 what is the slope
Answer:
The slope (or m) would be 3/8. Hope this helps!
slope: M=3/8
Step-by-step explanation:-3x+8y=12
Use y=mx+b3/8x+3/2
M=3/8
Hope this helped
Find the value of x so that the function has the given value. q(x)= 0.5x -3; q(x)= -4
By algebra properties, the x-value such that expression 0.5 · x - 3 = - 4.
How to clear an equation with a single variable
In this problem we must determine the value of x such that the following expression is satisfied:
0.5 · x - 3 = - 4
This can be solved by means of algebra properties. First, write the entire expression:
0.5 · x - 3 = - 4
Second, clear the variable x by algebra properties:
0.5 · x = 3 - 4
0.5 · x = - 1
x = - 2
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Maya and Edward cut lawns in the summer to earn spending money. Maya has a newer lawnmower, so Edward takes 15 minutes longer to cut a lawn than Maya. Working together they can both cut a lawn in 18 minutes. How long would it take Edward to cut a lawn alone?
Answer:
The answer would be 45 minutes.
Step-by-step explanation:
Just skipped to the answer on Edementum.
A fraction is a way to describe a part of a whole. The time it takes Edward to cut the lawn alone is 45 minutes.
What is a Fraction?A fraction is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25.
Let the time taken by Maya to lawn the garden be x.
The rate at which Maya lawn = 1/x
Maya has a newer lawnmower, so Edward takes 15 minutes longer to cut a lawn than Maya. Therefore,
The rate at which Edward lawn = 1/(x+15)
Working together they can both cut a lawn in 18 minutes.
The rate at which they both work = 1/18
Now, the rate of working can be compared as,
1/x + 1/(x+15) = 1/18
(x+ x + 5)/x(x+15) = 1/18
(2x + 15)18 = x(x+15)
36x + 270=x² + 15x
x²-21x-270=0
x = 30, -9
Since time can not be negative. Therefore, the time it takes Edward to cut the lawn alone is,
x + 15
= 30 + 15
= 45 minutes
Hence, the time it takes Edward to cut the lawn alone is 45 minutes.
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18x + 30 = ???????????
Answer:
18x+30=12x-6
Step-by-step explanation:
all you do is distribute
Answer:
The first blank you would need to put "12", for the second one put a minus (-) sign, and for the third box put a "6".
Dwayne ordered a set of purple and green pins. He received 35 pins in all. 28 of the pins were purple. What percentage of the pins were purple?
Answer:
28/35 = 4/5
Step-by-step explanation:
28 divided by 7 = 4
35 divided by 7 = 5