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Deffense [45]
3 years ago
5

If a dairyman has 300 pounds of milk testing 3% butterfat, how many pounds of skimmed milk (with no butterfat) must he

Mathematics
1 answer:
liraira [26]3 years ago
6 0

Answer:

  • B. 50 pounds

Step-by-step explanation:

<u>Set the equation and solve for x:</u>

  • 300*3/100 = (300 - x)*3.6/100
  • 900 = 1080 - 3.6x
  • 3.6x = 180
  • x = 180/3.6
  • x = 50 pounds

Correct choice is B

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kakasveta [241]
The answer is 1 USD = 1.0343 AUD
because the ratio is 1 USD:1.0343 AUD
fraction is
1.0343AUD/1USD

use to cancel out units
1.0343AUD/1USD times 80 USD=82.744 AUD

the answe ris the first one

7 0
3 years ago
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Whats the solution to the model below?<br><br>X=3<br>x=1<br>x=2<br>x=7​
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x = 3

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3 0
3 years ago
Simplify: 1/5(-16-9) + 4^2 ÷8​
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Answer:

-3

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8 0
3 years ago
Number 5 please help me
Alexeev081 [22]
If Jan bought 3 lamps for $23.59 each, and a sofa for $769.99, then we can add these prices together for the total amount Jan spent:

23.59 + 23.59 + 23.59 + <span>769.99 = $840.76
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3 0
3 years ago
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The weights of a certain dog breed are approximately normally distributed with a mean of μ = 55 pounds, and a standard deviation
weqwewe [10]

Answer:

(a)z=-1

(b)48.5 pounds

(c)61.5 pounds

Step-by-step explanation:

z-score=\dfrac{x-\mu}{\sigma}

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Mean, μ = 55 pounds

Standard deviation,σ = 6 pounds.

(a)For a dog that weighs 49 pounds.

x=49 pounds

The z-score

=\dfrac{49-55}{6}\\=\dfrac{-6}{6}\\\\=-1

(b)When a dog has a z-score of -1.09

-1.09=\dfrac{x-55}{6}\\x-55=-6.54\\x=55-6.54\\x=48.46 \approx 48.5$ pounds (to the nearest tenth)

The weight of a dog with a z-score of -1.09 is 48.5 pounds.

(c)When a dog has a z-score of 1.09

1.09=\dfrac{x-55}{6}\\x-55=6.54\\x=55+6.54\\x=61.54 \approx 61.5$ pounds (to the nearest tenth)

The weight of a dog with a z-score of 1.09 is 61.5 pounds.

3 0
3 years ago
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