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stiks02 [169]
3 years ago
7

The parabola y=x^2 is reflected across the x-axis and then scaled vertically by a factor of 4/3 What is the equation of the new

parabola? y=? if anyone can he quickly it would be greatly appreciated its due today soo
Mathematics
2 answers:
Strike441 [17]3 years ago
7 0

Answer: y = -\frac{4}{3}x^{2}

<u>Step-by-step explanation:</u>

y = ax² ; where a represents the vertical stretch

a reflection across the x-axis is represented by making the a-value negative.

tatuchka [14]3 years ago
6 0

Answer:

y=-\frac{4}{3}x^{2}

Step-by-step explanation:

The given parabola is a parent function, that is, it's the simplest form of a parabola.

The first transformation is about a reflection across the x-axis, this means that we need to multiplied the squared factor by a negative signed, that is

y=-x^{2}

This represents a parabola reflected across the x-axis.

The second transformation is about a scale factor of 4/3, this means that the function has to be multiplied by this factor to obtain the transformation. The expression would be

y=-\frac{4}{3}x^{2}

Therefore, this final expression represents the function reflected across the x-axis and scaled by a factor of 4/3.

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A flower garden is shaped like a circle. Its diameter is 40yd. A ring-shaped path goes around the garden. The width of the path
stellarik [79]

Answer:

Number of sand bags needed = 124

Step-by-step explanation:

Diameter of garden = 40 yd

Width of path = 6 yd

Diameter of garden with path = 40 + 2 x 6 = 52 yd

We need to find area of path.

Area of path = Area of garden with path - area of garden

\texttt{Area of path = }\frac{\pi \times 52^2}{4}-\frac{\pi \times 40^2}{4}\\\\\texttt{Area of path = }867.08yd^2

Area covered by one sand bag = 7 yd²

\texttt{Number of sand bags required = }\frac{\texttt{Area of path}}{\texttt{Area covered by one sand bag}}\\\\\texttt{Number of sand bags required = }\frac{867.08}{7}=123.86\approx 124

Number of sand bags needed = 124

8 0
4 years ago
5. When I sine an angle like 60°, it gives me a value like 0.866025403. What does this number represent?
PolarNik [594]

Answer:

See below

Step-by-step explanation:

The number you described is the same as sin(60^{\circ})=\frac{\sqrt{3}}{2} where the sine of an angle is the ratio between a right triangle's opposite side to the angle and the hypotenuse. So, in this case, if we had a right triangle with a height of \sqrt{3} units and a hypotenuse of 2 units, the ratio between the two sides will result in the value you provided. This right triangle in particular would be a 30-60-90 triangle.

In the case of a unit circle, it’s the y-coordinate of the point where a 60° angle in the standard position intersects a unit circle and a right triangle is created from that.

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3 years ago
I need help fast and the rite answer please
kipiarov [429]

Answer:

A.

Step-by-step explanation:

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A bottle of cough syrup has
Varvara68 [4.7K]

Answer:

20 days?

Step-by-step explanation:

3 times a day is 15 and 300 ÷ 15 = 20

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Answer: its d

Step-by-step explanation:

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