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andrew11 [14]
3 years ago
12

HELPPP FOR EXTRA POINTSSSSSSS!

Mathematics
1 answer:
larisa86 [58]3 years ago
8 0

Answer:

b

Step-by-step explanation:

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A quarterly telephone bill consist of N$79.15 rental plus 4.7 cents for each dialled unit. Sales tax is added at 15%. What is th
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$4.7 × 915 = 4300.5
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Can you help me? xy - 5 at x = 5, y = 2( pls show work)
r-ruslan [8.4K]

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5

Step-by-step explanation:

xy-5

plug in 5 for x and 2 for y

5*2-5

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A sequence is defined by the recursive function
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<h2>6</h2>

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5) You and a friend live 4 miles apart. You hear the sound of thunder 18 seconds before your friend hears it. Assuming sound tra
Leokris [45]

Answer:

  see attached

Step-by-step explanation:

At 1100 ft per second for 18 seconds, the sound travels 19,800 ft, or 3.75 miles farther to my friend's house. The set of points that lie 3.75 miles farther from my friend's house than from my house form a hyperbolic curve. This is illustrated by the blue line in the attached graph. (My house is the red dot on the left; my friend's house is the red dot on the right.)

The lightning occurred somewhere on the blue curve.

___

If the lightning occurred on the line between our houses, it was 1/8 mile from my house and 3 7/8 mile from my friend's house. (That's close!)

_____

The formula for the curve in the graph is the distance formula applied to the set of points (x, y). It equates the difference of distance from the two houses to 3.75 miles. If one were to write the equation of the hyperbola in standard form, the equation would look a little different and a restriction would need to be applied so the formula would describe only one branch of the hyperbola.

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3 years ago
A parabola has a minimum value of 0, a y-intercept of 4, and an axis of symmetry at x = -2
sveta [45]
Since the minimum value is 0 and axis of symmetry is -2 this means that the vertex is at -2,0 now with the y intercept of 4. You can now plug the values into Vertex form which will be y=a(x-h)^2+k. a being the shrink or stretch of the parabola, h being the x value of the vertex, and k being the y value of the vertex. with all of that plugged in it should look like y=(x+2)^2. You can check this equation by plugging in 0 as x which should find the y intercept of 4. So it should then look like y=(0+2)^2 -> y=(2)^2 -> y=4
3 0
3 years ago
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