Option D is the correct answer.
Given equations are:
4x - 2y = 7
3x - 3y = 15
Multiplying 1st equation by 3 and second equation by 4, we get:
12x - 6y = 21
12x - 12y = 60
Now subtracting the equations will eliminate x from the equations, leaving y as the only variable.
Answer:
The domain of the function is -4 ≤ x ≤ 9 ⇒ D
Step-by-step explanation:
- <em>The domain of any relationship is the values of the input</em>
- <em>The domain of the function f(x) = y is the values of x which make the function defined</em>
In the given figure
∵ There are 5 intervals between 0, 10 and 0, -10 on the x-axis
∴ Each square = 2
∵ There are 5 intervals between 0, 10 and 0, -10 on the y-axis
∴ Each square = 2
→ Find the coordinates of the starting and the ending point of the graph
∵ The starting point located 2 squares left and 2 squares down
∴ The starting point of the graph of the function is (-4, -4)
∵ The ending point located 4.5 squares right and 4 squares up
∴ The ending point of the graph of the function is (9, 8)
→ That means the x-coordinates of all points on the graph is from -4 to 9
∴ All values of x-coordinates on the function are located on -4 ≤ x ≤ 9
∵ The domain of the function is the values of x
∴ The domain of the function is -4 ≤ x ≤ 9
Answer:
Addition Property of Equality
Step-by-step explanation:
we know that
The<u><em> Addition Property of Equality</em></u> states that if you add the same number to both sides of an equation, the sides remain equal
In this problem we have
a=b
a+5=b+5 -----> by addition property of equality
Here we go!
The quadratic formula: x = [-b ± √(b2<span> - 4ac)]/2a
a = 1 (understood coefficient)
b = 12
c = -13
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Okay, so here, we split into 2 problems. If 14 were positive:
If 14 were negative:
So,
Each octave in the piano is composed of 8 keys with the end key overlapping the next one which means the last key is the first key of the next octave. In 52 white keys, there are 7 octaves which is composed of 43 full keys and 7 overlapping keys. Answer to this problem is 7 octaves.