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Ahat [919]
2 years ago
14

If -(x - 1) = 5, find the value of -4x. Show your work. PLEASEEEE !!!

Mathematics
1 answer:
irakobra [83]2 years ago
7 0

Answer: x=-4

Step-by-step explanation:

1. Simplify:

-(x-1)=5 => -x+1=5

Isolate x:

-x=5-1 => -x=4 => x=-4

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If y varies directly as x and y=4 when x=-2 find y when x=30
katovenus [111]

Answer:

Step-by-step explanation:

y=kx

4=k(-2)

k=-2

y=-2x

when x=30

y=-2*30=-60

5 0
3 years ago
A square patio has an area of 50 square feet. To the nearest tenth of a foot, what is the length of the patio? A. 7.1 ft B. 12.5
Ivanshal [37]
The answer is B because 50 divided by 4 is 12.5
5 0
3 years ago
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Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work​ together, it takes them 2 hours. How
aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

So, the per hour rate of Dwight  = (\frac{1}{K})

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood  = (K- 3) hrs

So, the per hour rate of Joe  = (\frac{1}{K-3})

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them  = (\frac{1}{2})

⇒ Per hour rate of ( Dwight  + Joe)  =(\frac{1}{2} )

\implies (\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})

Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

Implies either K = 6 Or K = 1

But if K = 1, (K-3)  = 1- 3  = -2 hours would be A CONTRADICTION.

⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0
3 years ago
Mario had 9 green,8 red 10 brown 6 orange and 9 blue M &M's. What fraction of the M&M's are orange?
IrinaK [193]
2/11 or 6/33 
hope it helps

8 0
3 years ago
The table below represents a function.
skelet666 [1.2K]

Answer:

i am pretty sure it is A/the graph is a straight line that has a slope of 6

Step-by-step explanation:

8 0
3 years ago
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