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Charra [1.4K]
2 years ago
7

Determine whether the following scenario represents a direct variation and describe why or why not: It takes 4 painters 8 hours

to paint a house and 12 painters 6 hours to paint the same house.
Mathematics
1 answer:
marysya [2.9K]2 years ago
4 0

Answer:

No

Step-by-step explanation:

It would take 1 painter 32 hours to paint a house (because 4*8=32). If we divide 32 by 12 we get 3, so no, it is not a direct variation because if it was it would only take 3 hours for the 12 painters to paint the house.

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60 POINTS PLEASE HELP ITS URGENT 1. Write a quadratic equation that can be solved by factoring. Solve your equation and show and
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you have a quadratic equation that can be factored, like x2+5x+6=0.This can be factored into(x+2)(x+3)=0.

So the solutions are x=-2 and x=-3.

2. 

<span><span>1. Try first to solve the equation by factoring.  Be sure that your equation is in standard form (ax2+bx+c=0) before you start your factoring attempt.  Don't waste a lot of time trying to factor your equation; if you can't get it factored in less than 60 seconds, move on to another method.
</span><span>2. Next, look at the side of the equation containing the variable.  Is that side a perfect square?  If it is, then you can solve the equation by taking the square root of both sides of the equation.  Don't forget to include a ± sign in your equation once you have taken the square root.
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5 0
3 years ago
Read 2 more answers
A regular hexagon (6-sided figure) has sides that are all the same length. Each side length is represented by the expression x +
Mandarinka [93]
Perimiter=6 times legnth of one side
P=6(x+1/3y)
P=6x+6/3y
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if x=5 and y=6
P=6(5)+2(6)
P=30+12
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A. P=6x+2y
B. 42 units is the perimiter
8 0
3 years ago
If the price of a toy usually costing £50 and id increased to £65 what is the increase percentage
Savatey [412]

Answer:

30%

Step-by-step explanation:

If the price went up to 65 from 50, that is an increase of 15. 15 is 30% of 50.

3 0
3 years ago
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Question 1 (1 point)
Naily [24]

Answer:

P ( -1, -3)

Step-by-step explanation:

Given ratio is AP : PB = 3 : 2 = m : n  and points A(5,6) B(-5,-9)

We will calculate coordinates of the point P which divides line segment AB  in the following way:

xp = (n · xa + m · xb) / (m+n) = (2 · 5 + 3 · (-5)) / (3+2) = (10-15) / 5 = -5/5 = -1

xp = -1

yp = (n · ya + m · yb) / (m+n) = (2 · 6 + 3 · (-9)) / (3+2) = (12-27) / 5 = -15/5 = -3

yp = -3  

Point P( -1, -3)

8 0
3 years ago
55 times 4 and time 3 equals what?
mina [271]

Answer:

55 times 4 =220

220 times 3 =660

7 0
2 years ago
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