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leonid [27]
3 years ago
12

Carlos has received a 9% salary increase. If he now earns $654 per week, what was his salary before the increase.?

Mathematics
1 answer:
babunello [35]3 years ago
6 0
So let's say he was earring x before his raise. That means that:
x times 1.09 = 654 (1.09 represents 100% (this is the 1.0) of his original salary plus 9% (this is the .09) his raise.
So,
1.09x = 654; now divide both sides by 1.09 to isolate and solve for x, and you get x = $600.
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GrogVix [38]
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How many minutes is 40% of 120 minutes?​
lana [24]
40% of 120 should be about 48 minutes
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Un comerciante de algodón de azúcar gana 40 cm por cada algodón vendido pero si no lo logra venderlo pierde 50 céntimos. un día
gayaneshka [121]

Answer:

He fails to sell that day 10 cottons.

Step-by-step explanation:

We are given that a cotton candy merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents.

One day when he made 120 cottons, he made a profit of 39 soles.

Let the number of cottons merchant is able to sold be 'x' and the number of cottons merchant is not able to sold be 'y'.

So, according to the question;

  • The first condition states that he made 120 cottons on one day, that is;

                                   x + y = 120

                                   x = 120 - y    ---------------------- [Equation 1]

  • The second condition states that merchant earns 40 cents for each cotton sold, but if he cannot sell it he loses 50 cents and due to which he made a profit of 30 soles, that is;

                               0.40x - 0.50y=39

                               40x - 50y=3900

                               40(120-y) - 50y=3900  

                               4800-40y - 50y=3900

                               90y=4800-3900

                                90 y = 900

                                  y=\frac{900}{90}=10

This means that the merchant is not able to sell 10 cottons.

4 0
3 years ago
If the volume of a cube is27cm2,find its total surface area
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Volume of a cube is s³

Total surface Area of a cube is 6s².

Therefore, given a volume of 27cm³

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s=3cm.

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A=6s²

A=6×(3×3)

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A=54cm².

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Sav [38]

Answer:

w=7

Step-by-step explanation:

1. -8+5w=27

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3. Simplify: 5w=35

4. Divide both sides by 5: 5w/5=35/5

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