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4 years ago

Please help I don't understand. This question

Mathematics

1 answer:

Licemer1 [7]4 years ago

4 0

It is asking us to write it in numerical form.
We have "double 9" which means 2(9).
"add 27" is +27.
If we combine those two together, we get
$2(9)+27$ .
If you want the answer we do 2*9=18, then 18+27=45

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Solve for p in the literal equation 5p + 9r = q.

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Answer:

p = q/5 - 9r/5

Step-by-step explanation:

Step 1: Write equation

5p + 9r = q

Step 2: Solve for p

Subtract 9r on both sides: 5p = q - 9r

Divide both sides by 5: p = q/5 - 9r/5

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While mining Fred found a large metal bar that contained 24 ounces of nickel. Fred also determined that the bar was 80% nickel.

frutty [35]

Answer:

Not that I'm a chemistry expert but mathematically,The total weight of the bar is directly proportional to the known weight of the bar and the given percentage. I worked it out and found that the the total weight of the bar is 30 ounces. This is how I did it

Step-by-step explanation:

80:24

100:n

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A little equation and after it's solve the variable (n) will be equal to 30

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3 years ago

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3 years ago

The polynomial 40p + 50f + 90 represents the amount of ink, in milliliters, of printing "p" poster and f flyers in

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color : 40p + 50f + 90

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p = 26

f = 45

[substitute the values given]

color : 40(26) + 50(45) + 90

b&w : 15(26)+20(45) + 45

[solve the equation]

color : 3380

b&w : 1335

[subtract to see how much ink is saved]

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