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Marizza181 [45]
3 years ago
14

Can someone please explain how to solve 3x+3=x-1 will give brainiest :)

Mathematics
1 answer:
ollegr [7]3 years ago
6 0
3x+3 = x-1
2x+3 = -1 (subtracted x from both sides)
2x = -4 (subtracted 3 from both sides)
x = -2 (divided 2 from both sides).
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Ellen said she spent half her money for lunch and half of what was left for a movie. She now has $1.20. How much did she spend f
goldenfox [79]

Answer: She spend $1.20 for lunch.

Step-by-step explanation:

Let the total amount be 'x'.

Half of her money spend for lunch be \dfrac{x}{2}

Half of her money left for a movie be \dfrac{x}{2}

Amount she has now = $1.20

So, According to question, it becomes ,

\dfrac{x}{2}=1.20\\\\x=1.20\times 2\\\\x=\$2.40

Hence, Amount she spend for lunch is \dfrac{x}{2}=\dfrac{2.40}{2}=\$1.20

Therefore, she spend $1.20 for lunch.

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3 0
3 years ago
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Fofino [41]

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4 0
3 years ago
Mrs. Yang bought 5 chickens and 3 ducks for $81. A chicken cost $5 more than a duck.
anygoal [31]

The cost of each duck is $ 7 and cost of each chicken is $ 12.

Step-by-step explanation:

Given,

5 chickens and 3 ducks are bought by $ 81

A chicken costs $ 5 more than a duck.

To find the cost of each duck and cost of each chicken.

Let,

The cost of each duck = x

The cost of each chicken = x+5

According to the problem,

5(x+5)+3x = 81

or, 5x+25+3x = 81

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or, 8x = 56

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The cost of each duck = $ 7

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8 0
4 years ago
PLEASE ANSWER + BRAINLIEST!!
Drupady [299]
To solve this problem you must apply the proccedure shown below:
 1. You have the followin quadratic equation given in the problem above: <span>x^2+3x+1
 2. Therefore, you have:
 x^3+3x=-1

 (b/2)^2=(3/2)^2=9/4

 x^2+3x+9/4=-1+9/4
 (x+3/2)^2=5/4

 Therefore, as you can see, the answer is: </span>(x+3/2)^2=5/4
6 0
3 years ago
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