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salantis [7]
3 years ago
5

I need serious Help!

Mathematics
1 answer:
givi [52]3 years ago
7 0
I believe the answer is 21.862069 or 21R25 hope this helps you
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find the equation of a cubic function whose graph passes through points (3,0) and (1,4) and is tangent to x-axis at the origin
Tomtit [17]

Answer:

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

Step-by-step explanation:

<em><u>Preliminary Remark</u></em>

If a cubic is tangent to the x axis at 0,0

Then the equation must be related to y = a*x^2(x - h)

<em><u>(3,0)</u></em>

If the cubic goes through the point (3,0), then the equation will become

0 = a*3^2(3 - h)

0 = 9a (3 - h)

0 = 27a - 9ah

from which h = 3

<em><u>From the second point, we get</u></em>

4 = ax^2(x - 3)

4 = a(1)^2(1 - 3)

4 = a(-2)

a = 4 / - 2

a = -2

<em><u>Answer</u></em>

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

 

3 0
3 years ago
It took an hour to now a lawn using a mower with 14 inches blade. How long will it take using a mower with 12 inches wide
kozerog [31]

If the time taken by 14 inches wide is one hour then the blade of 12 inches wide will take 1 hour 17 minutes to mow a lawn.

What is width?

The width of something is the measurement of one side of a body. It is generally less than length of that body or shape.

How to calculate time?

We have been given time of 1 hour if blade is 14 inches wide and we have to calculate time taken by 12 inches wide blade:

It will be as 14/12* 1 hour

=14/12

=1.167

=1.17 hour

Hence the time taken by the blade of 12 inches wide will be 1 hour and 17 minutes.

7 0
1 year ago
Read 2 more answers
Help me outtttttt !!!!!!!!!
Vera_Pavlovna [14]

Answer:try sin 14/x

Step-by-step explanation:

6 0
3 years ago
Luis earns $30 washing 3 dogs. At this rate, how many dogs did Luis wash to earn $70?​
Nadusha1986 [10]

Answer:

7 dogs

Step-by-step explanation:

$30/3 = how many dollars per dog

$10 per dog he washes

$70/$10 = 7, he washes 7 dogs

4 0
3 years ago
Read 2 more answers
Help pls it’s urgent. If your able to solve it than I’d really would appreciate you.
Colt1911 [192]

Answer:

Step-by-step explanation:

If the radius of the circle is equal to

\sqrt{\frac{A}{3} } and the area is given as 45, then

r=\sqrt{\frac{45}{3} } which simplifies to

r=\sqrt{15} and to the nearest tenth,

r = 3.9

4 0
3 years ago
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