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allsm [11]
3 years ago
7

The ratio of boys to girls at a school is 9 to 11. If 400 students attend the school, how many are girls?

Mathematics
2 answers:
pentagon [3]3 years ago
6 0
Total ratio=9+11=20
number of girls=11/20*400
                          =220
xxTIMURxx [149]3 years ago
3 0

Answer:  220

Step-by-step explanation:

Given : The ratio of boys to girls at a school is 9 to 11.

Let the number of boys be 9x and the number of girls be 11x.

Since there are 400 students attend the school.

Then we have the following equation :-

9x+11x=400\\\\\Rightarrow\ 20x=400\\\\\Rightarrow\ x=\dfrac{400}{20}=20

Now, the number of girls = 11x = 11(20)=220

Hence, there are 220 girls.

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7 0
3 years ago
You cook a turkey in an oven for 3 hours and 45 minutes. Let f(t) be the temperature (in degrees Fahrenheit) of the turkey t hou
Thepotemich [5.8K]

You cook a turkey in an oven for 3 hours and 45 minutes. Let f(t) be the temperature (in degrees Fahrenheit) of the turkey t hours after being placed in the oven.

a) At t = 0

temperature of turkey is 67 degree  Fahrenheit

b) At t = 3.75

temperature of turkey is 165 degree  Fahrenheit

c) t = 3

temperature of turkey is 4 degree  Fahrenheit

d) at t = 3.75

temperature of turkey is 169 degree  Fahrenheit

<h3>What is basic algebra ?</h3>

Algebra is a branch of mathematics that facilitates the description of problems or situations into mathematical statements. It involves variables like x, y, and z as well as mathematical operations like addition, subtraction, multiplication, and division to generate a valid mathematical statement. All branches of mathematics, such as coordinate geometry, calculus, and trigonometry, employ algebra. An elementary algebraic formula is 2x + 4 = 8. Algebraic expressions serve as the mathematical statement when operations on variables and constants, such as addition, subtraction, multiplication, division, etc., are done.

Given that : You cook a turkey in an oven for 3 hours and 45 minutes. Let f(t) be the temperature (in degrees Fahrenheit) of the turkey t hours after being placed in the oven.

a) At t = 0

temperature of turkey is 67 degree  Fahrenheit

b) At t = 3.75

temperature of turkey is 165 degree  Fahrenheit

c) t = 3

temperature of turkey is 4 degree  Fahrenheit

d) at t = 3.75

temperature of turkey is 169 degree  Fahrenheit

To learn more about basic algebra visit :

brainly.com/question/15167098

#SPJ9

8 0
1 year ago
Please hep me out !!!!!
Volgvan

Answer:

A

Step-by-step explanation:

Assuming you require the distance between the 2 points.

To calculate the distance d use the distance formula

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (- 3, - 8) and (x₂, y₂ ) = (- 2, - 3)

d = \sqrt{(-2+3)^2+(-3+8)^2}

   = \sqrt{1^2+5^2}

   = \sqrt{1+25}

   = \sqrt{26} → A

7 0
3 years ago
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