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4 years ago

10

cooghan asked his 19 classmates whether they were right or left-handed. there were 5 more right-handed classmates than left-hand

ed classmates

1 answer:

KIM [24]4 years ago

8 0

Divide 19 by 5
and that should be it

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10.1 and 10.5 witch one is greater

OLga [1]

Answer:

10.5

Step-by-step explanation:

Because the digit at tenths place in 10.5 is greater than that of in 10.1

$5 > 1$

3 0

3 years ago

Read 2 more answers

If you work for an hourly wage, your gross pay is a function of the number of hours that you work. Your hourly wage is $8 per ho

elixir [45]

I belive your answer is 320
Happy to assist you!

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3 years ago

What is the probability of pulling a jack or a heart out of a deck of 52 cards

ikadub [295]

Answer:

=4/13

Step-by-step explanation:

There are 13 hearts in a deck

4 jacks

but 1 is the jack of hearts so we don't double count it

13+4-1 = 16

P( heart or a jack) = jack or heart/ total

= 16/52

=4/13

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3 years ago

Find the Perimeter of the figure below, composed of a rectangle and two

larisa [96]

Answer:

Step-by-step explanation:

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3 years ago

Two airplanes are flying in the air at the same height. Airplane A is flying east at 300mi/h and airplane B is flying north at 2

Ipatiy [6.2K]

Answer:

$\frac{dAB}{dt}=340 mil/h$

Step-by-step explanation:

The change of distance over time of the plain A is 300 mi/hour and 200 mi/hour for plane B. O is the point of the airport.

So, the distance from A to O AO = 90 miles and BO = 120 miles.

Now, we have a right triangle here. We can use the Pythagorean theorem, so the distance between the planes will be:

$AB^{2} =AO^{2}+BO^{2}$ (1)

$AB =\sqrt{AO^{2}+BO^{2}}=$

$AB =\sqrt{90^{2}+120^{2}}=150 miles$

If we take the derivative of the equation (1) we could find the change of the distance between planes.

$2AB\frac{dAB}{dt}=2AO\frac{dAO}{dt}+2BO\frac{dBO}{dt}$

$2*150\frac{dAB}{dt}=2*90*300+2*120*200=102000 mil/h$

$\frac{dAB}{dt}=\frac{102000}{150*2}$

Finally,

$\frac{dAB}{dt}=340 mil/h$

I hope it helps you!

6 0

3 years ago