3 years ago

Is y= 12 x a proportinal relationship

Mathematics

2 answers:

Llana [10]3 years ago

7 0

Answer: yes

Step-by-step explanation:

Bezzdna [24]3 years ago

3 0

Yes y=12x is a proportional relationship

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Solve 4x^2 + 43 = 120. Round to the nearest hundredth.

Lady bird [3.3K]

4x² + 43 = 120
4x² = 120 - 43
4x² = 77
x² = 77/4
x² = 19.25
x = ±√19.25
x = ±4.39
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The solutions are ±4.39</span>

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3 years ago

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mart [117]

Answer:

(-20x -40)

Step-by-step explanation:

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3 years ago

Doug drank a soda with 130 mg of caffeine. Each hour, the caffeine in the body diminishes by about 12%.

Alex787 [66]

Answer:

Caffeine remains in Doug’s system after 2 hours = 100.672 mg

Step-by-step explanation:

Doug drank a soda with 130 mg of caffeine.

Caffeine drank = 130 mg

Each hour, the caffeine in the body diminishes by about 12%.

Reduction of caffeine per hour = 12 %

We need to find how much caffeine remains in Doug’s system after 2 hours.

$\texttt{Caffeine remaining in Doug’s system after 1 hour =}130-\frac{12}{100}\times 130=114.4mg\\\\\texttt{Caffeine remaining in Doug’s system after 2 hours =}114.4-\frac{12}{100}\times 114.4=100.672mg$

Caffeine remains in Doug’s system after 2 hours = 100.672 mg

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3 years ago

Emeril mixed 3/10 cup balsamic vinegar with 2/10 cup oil to make a salad dressing. Then he use 1/10cup of mixture for a large sa

LenKa [72]

Add them together and subtract so it would be 3/10+2/10=5/10 1-5/10=5/10

The answer is 5/10

8 0

3 years ago

Read 2 more answers

Of the last 60 people who went to the cash register at a department store, 10 had blond hair, 20 had black hair, 25 had brown

blsea [12.9K]

Answer:

probability= brown hair/total people=

25/60=- 5/12

Step-by-step explanation:

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3 years ago