Answer:
-7
Step-by-step explanation:
First, we know that we are solving for x so what we need to do is to find out what times -5=35.
We know that
-5x7=-35
So we know our answer cant be positive 7, which means we need the opposite of 7 which is -7.
And:
-5x-7=35
This makes the equation true:
Hence, the correct answer is -7
Answer:
(a) The solutions are:
(b) The solutions are:
(c) The solutions are:
(d) The solutions are:
(e) The solutions are:
(f) The solutions are:
(g) The solutions are:
(h) The solutions are:
Step-by-step explanation:
To find the solutions of these quadratic equations you must:
(a) For
The solutions are:
(b) For
The solutions are:
(c) For
The solutions are:
(d) For
For a quadratic equation of the form the solutions are:
The solutions are:
(e) For
The solutions are:
(f) For
The solutions are:
(g) For
Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0
The solutions are:
(h) For
Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0
The solutions are:
Answer:
Median: 88.5
Mean: 69.75
Step-by-step explanation:
Mean: add all numbers and divide by the amount of numbers.
Median: find the center most number. If none exist, take the two center most numbers and divide them by 2.
Mean: 12+88+89+90
279/4
69.75
Median:
(88+89)/2
177/2
88.5
Answer:
66
Step-by-step explanation:
Replace t with 9 in the equation.
Simplify.
Rounded, it equals 66
The perimeter for this case is given by:
Substituting values we have:
The area is given by:
Writing the area based on a variable we have:
We derive the area to obtain the maximum of the function:
We equal zero and clear x:
Then, the other dimension is given by:
Finally the maximum area is:
Answer:
The length and width of the plot that will maximize the area are:
The largest area that can be enclosed is: