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Leviafan [203]
3 years ago
14

Debra made $228 for 12 hours of work.

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
3 0

Answer:

17 hours

Step-by-step explanation:

  1. Set up a proportion: \frac{12}{228} = \frac{x}{323}  
  2. Cross multiply, then divide: 12 × 323 = 3876, 3876 ÷ 228 = 17
  3. So, she would have to work 17 hours to make $323.

I hope this helps!

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Answer:

82° because

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192° is for two angles, so it can't be 192°, 220°

it's not VERY obtuse angle. So it remains only 82°

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3 years ago
The measure of an angle is 78°. What is the measure of a complementary angle?
ki77a [65]
First you need to know the definition of a complementary angle. That means that two angles add up to 90 degrees, or a right angle.

To find an angle complementary to a 78 degree angle, you need to subtract 78 from 90. 

90 - 78 = 12
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4 years ago
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Pierre uses 30 grams of chocolate to make
Travka [436]

Pierre can make 3 liters of chocolate sauce from 450 grams of chocolate.

Step-by-step explanation:

Given,

Chocolate used to make 200 ml of chocolate sauce = 30 grams

Ratio of chocolate to milliliters of chocolate sauce = 30:200

Let,

x be the milliliters of sauce made from 450 grams of chocolate

Ratio of chocolate to ml of sauce = x:450

Using proportion;

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30:200::450:x

Product of extreme = Product of mean

30*x=200*450\\30x=90000

Dividing both sides by 30

\frac{30x}{30}=\frac{90000}{30}\\x=3000

450 grams of chocolate will make 3000 milliliters of chocolate sauce.

We will convert this in liters.

1 liter = 1000 ml

3000 ml = \frac{3000}{1000} = 3 liters

Pierre can make 3 liters of chocolate sauce from 450 grams of chocolate.

Keywords: ratio, proportion

Learn more about proportion at:

  • brainly.com/question/1414350
  • brainly.com/question/1418853

#LearnwithBrainly

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3 years ago
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kow [346]

Answer:

L = 48

Step-by-step explanation:

Given that L varies directly with Z² , then the equation relating them is

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When Z = 4 , then

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charle [14.2K]

Answer:

c. 5x + 25

Step-by-step explanation:

5( x + 5)

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5x + 25

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