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artcher [175]
2 years ago
5

In Mrs. Barrios’ 7th period, there are 9 girls and 12 boys. What ratios are equivalent to 9:12? Select all that apply

Mathematics
1 answer:
lina2011 [118]2 years ago
7 0
3:4 because both numbers can be divided by 3
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Jenny is cooking a chicken for dinner. A chicken needs be cooked for 40 minutes per kilogram, plus an extra 20 minutes. How long
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140 minutes because 40 x 3= 120+20=140
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3 years ago
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Y + 2 = -3/4 ( x +1 )
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Answer:

Step-by-step explanation:

3 0
3 years ago
What is the argument of -5\sqrt{3}+ 5i?
Shtirlitz [24]

Answer:

150 degrees

Step-by-step explanation:

Graphing the complex number we see the angle terminates in the second quadrant. This means the argument, the angle, will be between 90 degrees and 180 degrees.

So if we create a right triangle with that point after graphing it. We see the height of that triangle is 5 because that is the imaginary part. The base of that triangle has length 5\sqrt{3}. The problem is this doesn't give us any part of the angle we want, but it does give us the complementary of the part of the angle that is in second quadrant.

Let's find the complementary angle.

So the opposite side of the complementary angle is 5.

The adjacent side of the complementary angle is 5\sqrt{3}.

\tan(\theta)=\frac{5}{5\sqrt{3}}

\tan(\theta)=\frac{1}{\sqrt{3}}

\theta=\tan^{-1}(\frac{1}{\sqrt{3}})

\theta=30

So 90-30=60.

The answer therefore 60+90=150.

4 0
3 years ago
Is fast please help me is a exam
qaws [65]

Answer:

100 minutes

Step-by-step explanation:

1 hour = 60 minutes.

(2 / 3) * (1 hour) =

40 minutes

So the movie was 1 hour 40 minutes

REMEMBER:

1hr = 60 mins

60 mins + 40 mins = 100 mins

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5 0
2 years ago
17. Simplify (3 × 22) ÷ 6 + [28 – (4)2] = ?
Effectus [21]

Answer:

31

Step-by-step explanation:

(3*22=66) / 6 + [28n - (4)2=20]

66 /6 = 11+ [20]

11+20= 31

7 0
3 years ago
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