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vladimir1956 [14]
2 years ago
14

A car moves from A to B at a speed of 50 km/hr and comes back from B to A at a speed of 30 km/hr. Find its average speed during

the journey.
Mathematics
1 answer:
vredina [299]2 years ago
5 0
The average speed is 40km/hr. I hope this helped you!!
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Which is a y-intercept of the continuous function in the table? (0, –6) (–2, 0) (–6, 0) (0, –2)
photoshop1234 [79]

Y- intercept is a point where any graph crosses the y- axis.

X- intercept is a point where any graph crosses the x- axis.

This means the coordinate of the point of intersection will always have the x point as 0. So any point of the form ( 0, y) is the y- intercept. Any point of the form (x,0) is the x- intercept.

Given point are :

(0,-6) : y intercept

(-2,0) : x intercept

(-6,0): x- intercept

(0,-2): y- intercept

3 0
3 years ago
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Yvonne sells Nine West shoes. She earns 4% commission on all her sales. Yesterday she sold
Fynjy0 [20]

Answer:

$60

Step-by-step explanation:

4/100= 0.04

$1500 x 0.04 = 60

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2 years ago
The directrix of a parabola is x = 4. Its focus is (2,6) .
Sati [7]

Answer:

Step-by-step explanation:

If you plot the directrix and the focus, you can see that the focus is to the left of the directrix.  Since a parabola ALWAYS wraps itself around the focus, our parabola opens sideways, to the left to be specific.  The formula for the parabola that opens to the left is

-(y-k)^2=4p(x-h)

We will solve this for x at the end.  The negative is out front because it opens to the left.  If it opened to the right, it would be positive.

The vertex of a parabola is exactly halfway between the focus and the directrix, so our vertex coordinates h and k are (3, 6). P is defined as the distance between the vertex and the directrix, or the vertex and the focus.  Since the vertex is directly between both the directrix and the focus, each distance is the same.  P = 1.  Filling in what we have now:

-(y-6)^2=4(1)(x-3) which simplifies to

-(y-6)^2=4(x-3)

Now we will solve it for x.

-(y-6)^2=4x-12 and

-(y-6)^2+12=4x so

-\frac{1}{4}(y-6)^2+12=x

4 0
3 years ago
PLEASE HELP URGENT!!!<br><br> Answer only 28.
disa [49]

Answer:

-2h -16k

Step-by-step explanation:

-2(h+8k)

Distribute

-2h -2 *8k

-2h   -16k

They failed to distribute the minus sign as well as the 2            

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3 years ago
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The answer is d priority
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