Evaluate the expression below when y = -3.
1 answer:
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The solutions to f(x) = 64 is x = 7 and x = –7.
Solution:
Given data:
and
To find the solutions when f(x) = 64.
Both are equations of f(x), so equate the given equations, we get
Subtract 15 from both sides of the equation.
49 can be written as 7².
Taking square root on both sides of the equation, we get
x = ±7
The solutions to f(x) = 64 is x = 7 and x = –7.
Debnil have 2 tablespoons to salt.
Step-by-step explanation:
Given,
Number of teaspoons of salt = 6
Ratio of teaspoons to tablespoons = 3:1
Let,
x be the number of tablespoon of salt for 6 teaspoons.
Ratio of teaspoons to tablespoons = 6:x
Using proportion
Ratio of teaspoons to tablespoons :: Ratio of teaspoons to tablespoons
Product of mean = Product of extreme
Dividing both sides by 3
Debnil have 2 tablespoons to salt.
Keywords: ratio, proportion
Learn more about proportion at:
#LearnwithBrainly
Start with the original function:
Substitute in the known value:
Multiply:
Add: