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2 years ago

7

the ratio of girls to boys in theater class is 2 to 3. there are 28 girls in theater class.what is the total number of students

in the theater?

2 answers:

EleoNora [17]2 years ago

8 0

Answer:

I believe there are 70 students in the theater!

Step-by-step explanation:

In the ratio 2:3 going to 28:? there is a pattern. You multiply 2 by 14 to get to 28, so if you multiply 3 by 14 you get 42. Add 42 to 28 for the total amount of students in class!

Have a nice night!

adell [148]2 years ago

5 0

Answer:

Step-by-step explanation:

Ratios come in 3 forms: 2 to 3, 2:3, and 2/3, which means there are 2 girls for every 3 boys. I like to put it into a fraction form like this:

2 28

--------- = ---------

3 ?

The numerator is girls and the denominator is boys. How did 2 go to 28? x 14. What is 3 x 14? 42. So, this is the new fraction:

2 28

--------- = ---------

3 42

BUT, it asks for total number of students. What is 28 + 42? 70. So, there are 70 total students.

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If the point (4,-2) is included in a direct variation relationship, which point also belongs in this direct variation? A. (-4,2)

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Answer:

(-4,2) belongs in this direct variation.

Step-by-step explanation:

Let the direct variation relationship is expressed by the equation y = mx ........ (1), where x and y are in direct variation and k is the variation constant.

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2 years ago

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$\boxed{(f\circ g)(x)=x^2}$

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3 years ago

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What is 1.400 as a common fraction and write as %

11Alexandr11 [23.1K]

Answer:

1.400 as a common fraction is 7/5

as a percentage 140%

Step-by-step explanation:

1.4 written as a fraction is;

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2 years ago

The concentration of dichlorodiphenyltrichloroethane (DDT - an infamous pesticide) in Lake Michigan has been declining exponenti

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Answer: A) $y=13e^{-0.1359t}$

B) H = 5.10

C) Yes

Step-by-step explanation: <u>Exponential</u> <u>Decay</u> <u>function</u> is a model that describes the reducing of an amount by a constant rate over time. Generally, it is written in the form: $y(t)=Ce^{rt}$

A) C is initial quantity, in this case, the initial concentration of DDT. To determine r, using the data given:

$y(t)=Ce^{rt}$

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Using a natural logarithm property called <em>power rule:</em>

$13r=ln(0.1708)$

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$(0.5)^{\frac{13}{H} }=0.1708$

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$y(24)=13e^{-0.1359.24}$

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By 1995, the concentration of DDT is 0.5 ppm, so using this model is possible to reduce such amount and more of DDT.

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Answer:

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Step-by-step explanation:

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