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2 years ago

Tell whether the following sequence is geometric or not. If geometric find r

Mathematics

2 answers:

Afina-wow [57]2 years ago

6 0

Answer:

not geometric because of the 4 at the beginning

PolarNik [594]2 years ago

3 0

Answer:

Step-by-step explanation:

We can observe the difference of terms is constant:

d = 1/3

The sequence is arithmetic, not geometric.

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Sketch the graph of the inequality.

Bingel [31]

Answer: D. Check Desmos for confirmation. Its your best friend for Graphing.

Step-by-step explanation:

6 0

2 years ago

A parabola has a focus of F(2, -0.5) and a directrix of y=-1.5 P(x,y) represents any point on the parabola, while D(x, -1.5) rep

prohojiy [21]

The sketch of the parabola is attached below

We have the focus $(a,b) = (2, -0.5)$
The point $P(x,y)$
The directrix, c at $y=-1.5$

The steps to find the equation of the parabola are as follows

Step 1
Find the distance between the focus and the point P using Pythagoras. We have two coordinates; $(2, -0.5)$ and $(x,y)$ .
We need the vertical and horizontal distances to find the hypotenuse (the diagram is shown in the second diagram).
The distance between the focus and point P is given by
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$

Step 2
Find the distance between the point P to the directrix $c$ . It is a vertical distance between y and c, expressed as $y-c$

Step 3
The equation of parabola is then given as
$\sqrt{ (x-a)^{2}+ (y-b)^{2} }$ = $y-c$
$(x-a)^{2}+ (y-b)^{2}= (y-c)^{2}$ ⇒ substituting a, b and c
$(x-2)^{2}+ (y--0.5)^{2} = (y--1.5)^{2}$
$(x-2)^{2}+ (y+0.5)^{2}= (y+1.5)^{2}$ ⇒Rearranging and making $y$ the subject gives

$y= \frac{ x^{2} }{2} -2x+1$

7 0

3 years ago

Rosa bought 70 feet of cable for $14.70. She needs 30 more feet. If the unit price is the same, how much will she pay for the ex

Murrr4er [49]

30 more feet will cost 6.30$

Step-by-step explanation:

please mark brainliest

6 0

3 years ago

Read 2 more answers

Phoenix [80]

Answer:

Step-by-step explanation:

If you increase the scale factor by 4, the sides become:

L= 2×4 = 8

W= 3×4 = 12

Now to find the new area:

8 × 12 = 96cm^2

So, a scale factor of 4 would give the rectangle a scale factor of 96.

Hope this helps and have a nice day!

4 0

3 years ago

Eric had a total of 40 nickels and dimes if the total value of the coins is 330 cents, how many nickels and dimes does he have?

kumpel [21]

Answer:

165 of nickels and 165 of dimes

7 0

3 years ago