If a recipe for 24 cookies needs 2 cups of flour, how many cups would we need to make 42 cookies?
1 answer:
You might be interested in
Answer: c)
Step-by-step explanation:
This can be done through trial-and-error. Use the pythagoreas' theorem and if the left side of the equation is equal to the right, that is the answer.
(Do take note that c is the longest side.)
a)
Since , a) is wrong.
b)
Since , b) is wrong.
c) (answer)
Since , c) is correct.
d)
Since , d) is wrong.
The answer is a = 3/4 = 0.75
First get rid of the paranthesis,
Then set the denominators equal:
Then remove the denominators and solve:
Eliminate -12a^2 by adding 12a^2 to both sides:
Take the fourth root of them or take the square root twice:
![\sqrt[4]{256 {a}^{4} } = \sqrt[4]{81} \\ 4a = 3](https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B256%20%7Ba%7D%5E%7B4%7D%20%7D%20%20%3D%20%20%5Csqrt%5B4%5D%7B81%7D%20%20%20%5C%5C%20%204a%20%3D%203)
Divide both sides by 4:
First get rid of the paranthesis,
Then set the denominators equal:
Then remove the denominators and solve:
Eliminate -12a^2 by adding 12a^2 to both sides:
Take the fourth root of them or take the square root twice:
Divide both sides by 4: