Answers
Domain is the squiggly line across horizontal
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5(88) using distributive property and mental math
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15 less than the quotient of a number and 6 is 30
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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?
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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
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?
Answers
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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A kitchen sink holds 24 gallons of water. A full sink drains at 3 gallons per minute. Which of the following tables best represents the situation?
(The pictures are as follows!)
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Answer:b
we start with 24 but as we get to the first minute we have already lost 3 gallons and so on.
PLZ HELP ME ASAP!!!!
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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
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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
zero of functions equations
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Answer:
what?
Step-by-step explanation:
if you multiply an even number and an odd number will the product be odd or even?
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Answer: It will be an even number.
Step-by-step explanation: ........
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)
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what is the excluded value of x for
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Answer:
value of x is for values that are excludedor or left out
Due at midnight!!! Help
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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?
Answers
Answer:
√27
Step-by-step explanation:
3×√3 = 5.196
√27 = 5.196
Answer:
27
Step-by-step explanation:
StartRoot 27 EndRoot cm
3.3 x 10*9 +2.6 x 10*9 +7.7 × 10*8
Answers
Answer:
23.4x10+913
Step-by-step explanation:
Answer:
1147 okayyyyyyyyyyyyyyyyyyhhhhyhhhhhhyyyyyyyy
simplest radical form:
4.582575695
Answers
hahahahahahahahahahahahahahahaha
30 POINT QUESTION !! Will make the brainliest
Answers
18x + 30 = ???????????
Answers
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".
Write a line function with a slope of 5 that passes through the point of (2,1)
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Answer: 5x - 9
Hope this helps :)
Answer:the other one is wrong
Step-by-step explanation:5x - 9is wrong
What is 4/5 divided by 3/4 ?
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The graphs below have the same shape what is the equation of the blue graph
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Answer: g(x) = (x-2)^2 + 1. Choice C
===========================================================
Explanation:
The graphs have the same shape, which means they have the same 'a' value.
In this case, a = 1.
The vertex of the red graph is (0,0).
The vertex of the blue parabola is (2, 1)
The red curve has been shifted 2 units to the right and 1 unit up.
Since the vertex of the blue graph is (2,1), this means h = 2 and k = 1.
Plug a = 1, h = 2 and k = 1 to get...
y = a(x-h)^2 + k
y = 1(x-2)^2 + 1
g(x) = (x-2)^2 + 1
Answer:
C.
Step-by-step explanation:
Since the blue graph shifted up by 1 unit, it would be +1 at the end of the quadratic function. Then, because the graph also shifted to the right 2 units, the blue graph subtracts from f(x)=x^2 (it does the opposite).
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.
Answers
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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You toss a coin, roll a dice, and choose a card out of 52 decks of cards. What is the likely hood that you will toss tails, roll an odd number, and choose ace.
Answers
Answer:
~0.02% chance
Step-by-step explanation:
coin: 1/2 chance
dice: 3/6 chance
cards: 4/52 chance
1/2x3/6x4/52 = 0.02% percent chance
Find the value of x so that the function has the given value. q(x)= 0.5x -3; q(x)= -4
Answers
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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Someone help me out please
Answers
Answer:
0.5-1
Step-by-step explanation:
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
Answers
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:
What’s the slope of this equation
Answers
Answer:
it is 4
Step-by-step explanation:
the slope is always the number in front of the X
solve the literal equation for f: - 3f = g for f
A.f=g/-3
B.g+3=f
C.f=g-3
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Answer:
i think its a
Step-by-step explanation:
Find all the Missing Angles
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Answer:
need more information
using long Division perform (a²-22a+17)÷(a-13)
Answers
Answer:
wherw are yiu coms on email kingrizvi218
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
Answers
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