Melody can cycle for 30 miles against the wind in the same amount of
1 answer:
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Answer:
Quadratic Formula
so
x = -5
and
x = 0.5
Step-by-step explanation:
Whenever you see a problem in this form, which you will see a lot of, you can try to factor it or use the "least squares" method or what have you, but those won't always work, unfortunately.
Fortunately, the quadratic formula will never fail you with quadratic expressions.
This is the Quadratic Formula
a is the the number on the variable with the exponent ^2
b is the number on the variable with no exponent
c is the third number
a and b cannot be equal to 0; c can be
Since we're looking for a number with an equation that has a square root in it, we're going to get two answers. These two answers come from the radical being separately added AND subtracted from the radical. It's basically two problems.
Plugging in our numbers to this equation gives us x values of -5 and 0.5. This will always work with polynomials with factors of ^2 in them.
If you have a TI-84 calculator or newer, there's a tool on it that will factor polynomials like this one for you just by giving it the numbers.
- The first Phrase
, is a equation.
- The second phrase
4q>s+, is an inequality.
- The third phrase
4a-5 is an expression
<h3>What is Equation, Expression and Inequality?</h3>
- An equation is a mathematical expression that contains an equals symbol.
- An expression is a combination of numbers, variables, functions
- An inequality is a statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.
The first Phrase
, is a equation.
A equation contain operand, operators(+,-,*,/) and an equal sign.
The second phrase
4q>s+, is an inequality.
An inequality is a statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.
The third phrase
4a-5 is an expression
An expression is a combination of numbers, variables, functions
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