Our parabola open downward and therefore a is negative.
Explanation:
As value of a changes from positive to negative or from negative to positive, the direction of opening changes. For negative values of a we got negative parabolas that open downward. As the original formula y = x^2 we see that x^2 will always be positive because when you square a number it always gives positive value. Therefore the direction for which it will open, depends on value of a.
Answer:
<h2>B.</h2>
Step-by-step explanation:
The probabilty is defined as the ratio between the total events and the total outcomes possible.
In this case, we have 90 total outcomes, which are all two-digit numbers. The event is only one, the number 32. Using the definition, we have

Therefore, the right answer is B.
The average number of fish per cubic kilometer is
.
The correct option is B.
Given
The volume of one of the Great Lakes is 3.5 × 103 cubic kilometers.
The number of fish in the lake = 6. 3 × 107.
<h3>What is the average value?</h3>
The average is the middle value of the given data set and is calculated by adding up all the numbers and dividing the result by the total quantity of figures added.
The average number of fish per cubic kilometer is given by;

Substitute all the values in the formula;

Hence, the average number of fish per cubic kilometer is
.
To know more about the Average rate click the link given below.
brainly.com/question/12395856
Answer: No. Equations even if it is paired. So on. It can only have one solution. Although this is only for a system of equations.
A linear can have two. It just depends on what the problem is.
Step-by-step explanation:
Answer:
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Step-by-step explanation: