The area of a triangle is calculated by half of the base times the height.
S= 1/2a*h (in which a is the base and h is the height).
Hope this helps~
Answer:
C infinitely many solutions
Step-by-step explanation:
multiply second equation by -3
-3 × (4x + 3y) = -12 ➡ -12x - 9y = 36 now add this to second equation
12x + 9y -12x -9y = -36 + 36 ➡0 = 0
we say there's infinite solutions because whatever value you write for x and/or y there will be a solution.
Answer:
Yes, Sample is good.
Step-by-step explanation:
The sample is a subset of the population, we take a sample because sometimes it is not possible to work on the whole population or it is quite costly or the time has taken so we work on sample.
Characteristics of Good Sample:
- The choice of the sample should be unbiased that means there should be an equal chance of selecting each unit.
2. It should be representative of the sample.
3. The choice of the sample should be flexible.
Since here she did not do any bias in selecting a sample. Here the choice of sample is independent and each unit has an equal chance of being selected in a sample. So, the choice of sample is quite good.
The function will simply get reflected about the y-axis.
Let's approach this through what we know. Since we know that the x values are mirrored, we know that the points in Quadrant I and IV will be reflected over to the negative side, Quadrants II and III, because they simply change in signs.
However, we also know that the function y-values do not change. This is because whatever the x values are don't change the range and y-values of an even function.
To be more specific, if we have an even function, we are most likely dealing with quadratics or variants/transformations of the quadratic function.
If we were to have 2, and -2, and we wanted to plug them into the equation:

, the signs do not change the y-values of the function.
Hence, we know that it ONLY gets reflected across the y-axis.
The answer would be 200 miles. I just took the test and got it right.