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Jet001 [13]
3 years ago
14

The length of a rectangle is 4 cm more than 3 times it’s width. If the area of the rectangle is 15 cm^2, find the width. Use qua

dratic equations.

Mathematics
2 answers:
REY [17]3 years ago
6 0
Well, you should probably check with somebody else but i had got 26.5 or 26 1/2. I'm not sure if that is correct due to it saying to use quadratic equations. Sorry
Inessa [10]3 years ago
3 0
Same answer as the first question be with the quadratic formula

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3 years ago
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Alice is baking a cake. She doesn’t intend to eat it, but tells you half of what you find is yours. She tells the same thing to
tankabanditka [31]

Answer: a) P = 0.5, b) P = 0.07

Step-by-step explanation:

Hi!

Lets call X₁ the time at which you arrive, and X₂ the time at which Bob arrives. Both are random variables with uniform density in the interval [0, 60] (in minutes). Their joint distribuition is uniform over the square in the image, with value P = 1/(60*60) = 1/3600.

a) For you to get more cake than Bob, you should arrive earlier. This event is A = { X₁ < X₂ }, the shaded triangle in the figure.The area of this event (set) is half the total area of the square, so P(A) = 0.5.

It makes sense, beacuse its equally probable for you or Bob to arrive earlier, as both have uniform density over the time interval.

b) In this case you arrive later than Bob, but less than 5 minutes later. So the event is B = { X₂ < X₁ < (X₂ + 5) } . This is the gray shaded area in b) part of the image. Its area is the difference two triangles (half square - blue triangle), then the probability is:

P(B) = 0.5 - \frac{(0.5*55^2)}{3600} =0.07

7 0
3 years ago
What is the measure of angle x?
tankabanditka [31]

Answer:

could you upload a picture?

Step-by-step explanation:

7 0
2 years ago
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Answer:

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113.04

Hope this helps

Step-by-step explanation:

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3 years ago
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Answer:

<u>Answer</u><u>:</u><u> </u><u>D</u>

{50x}^{2}  + 30x + 10

• first factorise out 10:

= 10(5 {x}^{2}  + 3x + 1)

• then find factors of the quadratic equation in the bracket:

4 0
2 years ago
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