Answer:
21.6
Step-by-step explanation:
To solve for expressions with variables, substitute the variable's value is where the variable is in the expression.
The variable is y, and y's value is 0.3
Substitute y for 0.3
8(y+2.4)
= 8(0.3+2.4)
Now solve by following BEDMAS (brackets, exponents, division, multiplication, addition, subtraction).
= 8(0.3+2.4) <=Solve the brackets by adding
= 8(2.7) <= multiply
= 21.6
<u>Answer</u>:
The number of hens is 100 and the number of roosters is 200.
<u>Step-by-step explanation:</u>
Let the number of hens be x and the number of roosters be y
then the total number of hens and roosters, is 300
so,
----------------------------(1)
Also the hen eats 80 pounds of food per year and roosters eats 60 pounds of food per year,
----------------(2)
To solve the equations , multilpy eq(1) by 80
------------------(3)
Subracting (2) from (3)


substituting y in eq(1) we get



A reflection over the y-axis means that "x" will change signs.
A dilation causes the graph to stretch (if the factor is greater than 1) or shrink/compress (if the factor is between 0 and 1). Usually, the instructions will say whether it is a vertical or horizontal stretch (or shrink) so you know which variable is affected. Since it was not specified, I am going to assume that this is both a vertical and a horizontal shrink.
Answer: y =
(
)
Answer:
n=42, m=42
Step-by-step explanation:
The side opposite the 30° angle is half the size of the hypotenuse. So, 84/2=42. Now, the side opposite the 60° angle is shown as 84/2 ·
, which is the same as 42√3.