Answer:
–3 and –3
Step-by-step explanation:
x² + 6x = – 9
Rearrange
x² + 6x + 9 = 0
Multiply the first term i.e x² and last term i.e 9 together. The result is 9x².
Next, we shall find two factors of 9x² such that when we add them together, the result will be the same as the 2nd term i.e 6x in the expression above.
The factors are 3x and 3x.
Next, we shall replace 6x with 3x and 3x in the equation above as shown below:
x² + 6x + 9 = 0
x² + 3x + 3x + 9 =0
Factorise
x(x + 3) + 3(x + 3) = 0
(x + 3)(x +3) = 0
x + 3 = 0 or x + 3 =
x = – 3 or x = – 3
Therefore, the solutions are –3 and –3
<u><em>Answer:</em></u>
A: Stu estimated correctly by rounding up. He ordered enough brick. The exact area is 228.75 square ft
<u><em>Explanation:</em></u>
<u>Since the patio is a rectangle, therefore, we can get the area as follows:</u>
area = length * width
area = 12.5 * 18.3
area = 228.75 ft²
<u>Now, Stu rounded up the values, this means that for Stu's calculations:</u>
the length = 19 ft (rounding up the 18.3 ft)
the width = 13 ft (rounding up the 12.5 ft)
calculated area = 19 * 13 = 247 ft²
We can conclude that Stu was correct when he rounded up as he has ordered enough brick to cover the patio
Hope this helps :)
Answer:
7/12
Step-by-step explanation:
7/6÷2
7/6÷2/1
7/6*1/2
7/12
54 is 40% of 135. hope this helped
Every function associates input values with output values. The domain of a function is the set of all the inputs the function accepts.
You will basically always find your function graphed with the inputs on the horizontal axis and the outputs on the vertical axis. This means that every point on the graph has coordinates , and the domain is the set of all the x values.
The points on your red line have all coordinates , where d starts from 0 and ranges up to 12. So, the domain of the function is