sally is 1 year older than3 times the age of joe. chris is 5 years younger than 6 times the age of joe. if sally and chris are t
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For this case we define the following variable:
<em>x: unknown number </em>
We then have the following equation:
From here, we clear the value of x.
We have then:
Answer:
An irrational number that can be multiplied by negative square root of 41 to get a product that equals 1 is:
Answer: Ana will hit the water after 3 seconds.
Step-by-step explanation:
The exercise gives you the following function which models Anna's height above the water (in meters) after diving "x" seconds:
You can rewrite the function with :
In order to calculate the number of seconds Ana will hit the water after diving, the procedure is:
- Substitute into the function:
- Solve for "x".
By the Zero Product Property, you know that if , then
or
.
Then you get:
- Choose the positive value ()
Then, Ana will hit the water after 3 seconds.