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Stels [109]
3 years ago
6

Select all expressions equivalent to 6x + 12 – 4x – 3 + 3x.

Mathematics
1 answer:
KengaRu [80]3 years ago
6 0

Answer:

First task: 2., 5.

Second task: 1., 2.

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Suppose the equation ax^2+bx+c=0 has no real solution and a graph of the related function has a vertex that lies in the second q
Veseljchak [2.6K]
If it has no real solutions, that means the graph does not intersect the x axis

since we have ax^2+bx+c=0, the parabola opens either up or down
since the vertex is in the second quadrant (x is negative and y is positive in this reigon) and the graph does not cross the x axis, the parabola must open up
if the value of 'a' is positive, then the parabola opens up

so 'a' must be positive



if it is translated to the 4th quadrant, then the vertex is now below the x axis
it will now have 2 x intercepts because the vertex is in the 4th quadrant and look at a graph of a parabola opening up with vertex in 4th quadrant and seehow many time it crosses the x axis
7 0
3 years ago
What is the value of 3x^2 + 5x + 25 when x = 3
Leno4ka [110]

Answer: 121

Step-by-step explanation:

6 0
3 years ago
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What is the amplitude, period, and phase shift of f(x) = -4 sin(2x + π) - 5?
son4ous [18]
F(x) = -4sin(2x + π) - 5

<u>Amplitude</u>
A = -π

<u>Period</u>
<u>2π</u> = <u>2π</u> = π
 B      2

<u>Phase Shift</u>
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</u>
3 0
3 years ago
Read 2 more answers
Circumference of a 4" circle?
lesya692 [45]

Answer:

4π ≈ 12.5663706144

Step-by-step explanation:

The circumference of a circle is 2πr, or 2*pi*radius

Suppose the circle has a diameter of 4 inches. A diameter is 2x the radius, of which we are looking for, therefore:

4÷2=<u>2 inches</u> (radius length)

Now that we have the radius, let us <u>substitute</u> to find the circumference:

2πr=

2π2=

4π≈

<u>12.5663706144</u>

<u></u>

<em>I hope this helped! Let me know if you have any further questions :)</em>

7 0
3 years ago
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The are 66 small wooden animals to sell at the craft fair . He displays in rows of 7 animals in a row. How many will not be in a
lord [1]

Answer:

9

Step-by-step explanation:

There would be 9 because 7 goes into 66 9 times

4 0
3 years ago
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