Answer:
2 x <u>2</u> + 9 > 11
2 x 2 = 4
4 + 9 = 13
13 > 11
Therefore, x = 2.
Step-by-step explanation:
I hope this helps! ^w^
B :81 EXPLANATION
The angle with the greatest measure corresponds to the longest:
Since we know the three side lengths, we use the cosine rule to obtain;
{a}^{2} = {b}^{2} + {c}^{2} - 2bc \cos(A)
where a=21, b=18 and c=14
{21}^{2} = {18}^{2} + {14}^{2} - 2 \times 18 \times 14\cos(A)
44 1= 324+ 196 - 504\cos(A)
44 1= 520 - 504\cos(A)
44 1 - 520 = - 504\cos(A)
- 79 = - 504\cos(A)
\cos(A) = 0.1567
A = \cos ^{ - 1} (0.1567) = 80.98 \degree
Answer:
The top choice.
Step-by-step explanation:
If a quadratic function is a perfect square trinomial, its graph will intersect the x-axis exactly once.
Expanded, this is
There is only one value of x which makes the "two" factors equal to zero, and that is -1, where the graph touches the x-axis.
See the attached graph. is the purple graph.
The green graph is an example of a quadratics which is NOT a perfect square. It's the function .
Answer:
to small
Step-by-step explanation:
The answer would be 2000, because you would round the 19 to 20 and then just at the 2 zeros representing the thousands. So you would be left with 2000 as your final answer.