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Alina [70]
3 years ago
11

What is 2x-2(x-2y)+1/2(8x+6y) simplified?

Mathematics
1 answer:
julia-pushkina [17]3 years ago
6 0
2x-2x+4y+4x+3y=4x+7y
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I hate this pain i got through i just cant anymore...<br><br> y+50=700
DiKsa [7]

Answer:

y=650

Step-by-step explanation:

Just subtract 50 from each side

And Yes, please

5 0
3 years ago
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If your cell phone bill was 67 Point $82 and there is a 7.5% late fee how much will your bill be with the late fee included
Ivenika [448]

\frac{7.5}{100}  =  \frac{x}{82}  \\ x =  \frac{82 \times 7.5}{100}  =  \frac{615}{100 }  = 6.15
82 + 6.15 = 88.15
the answer is $88.15
7 0
3 years ago
The container that holds the water for the football team is 1/2 full. After pouring out 3 gallons of water, it is 1/3 full. How
Nana76 [90]

Answer:

18 gallons

Step-by-step explanation:

1/6 of container is 3 gallons

so 6/6 is 18 gallons

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3 0
3 years ago
Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.
Romashka-Z-Leto [24]
In step one, you are supposed to add 25 to both sides, because if you just subtract, it would be -5x-50=53
8 0
3 years ago
If the probability of selecting, without replacement, 2 red marbles from a bag containing only red and blue marbles is 3 55 and
Marat540 [252]

Answer:

Step-by-step explanation:

Let T = the TOTAL number of marbles in the bag.

We are told that 3 of those marbles are red

P(select a red marble first) = 3/T

Once we've removed the first red marble, there are T-1 marbles remaining and 2 of them are red

So, P(select a red marble second) = 2/(T-1)

Okay, now let's use probability rules to answer the question....

P(select 2 red marbles) = P(select a red marble first AND select a red marble second)

= P(select a red marble first) x P(select a red marble second)

= 3/T x 2/(T-1)

= 6/(T² - T)

We're told that P(select 2 red marbles) = 3/55

So, we can write: 6/(T² - T) = 3/55

Cross multiply to get: 3(T² - T) = (6)(55)

Divide both sides by 3 to get: T² - T = (2)(55)

Evaluate: T² - T = 110

Rearrange: T² - T - 110 = 0

Factor: (T - 11)(T + 10) = 0

So, EITHER T = 11 OR T = -10

Since T cannot be negative, it must be the case that T = 11

6 0
3 years ago
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