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2 years ago

Physics aka Physics

Mathematics

2 answers:

gulaghasi [49]2 years ago

7 0

Answer:

I agree :') :))))))))))))))))))))

Triss [41]2 years ago

4 0

Answer:

yeah physics is hard young one

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There are 90 new houses being built in a neighborhood. Last month, 13 of them were sold. This month, 15 of the remaining houses

Tcecarenko [31]

62 because 90 minus 15, minus 13, is equal to 62

8 0

2 years ago

Read 2 more answers

How many tons are in 512,000 ounces?

murzikaleks [220]

Answer:

16 Tons

Step-by-step explanation:

divide 512,00 by 32000

3 0

2 years ago

A neighbor farmer had some chickens. She had 24 feet of wire fencing to

Paraphin [41]

Answer:

A rectangle is defined by its length = L, and its width = W.

So the perimeter of the of the rectangle can be written as:

Perimeter = 2*L + 2*W.

In this case, we want to leave the perimeter fixed, so we have:

24ft = 2*L + 2*W.

Now, we do not have any other restrictions, so to know the different dimensions now we can write this as a function, by isolating one of the variables.

2*L = 24ft - 2*W

L = 12ft - W.

or:

L(W) = 12ft - W.

Such that:

W must be greater than zero (because we can not have negative or zero width).

And W must be smaller than 12ft (because in that case we would have zero or negative length)

Then the possible different dimensions are given by:

L(W) = 12ft - W

0ft < W < 12ft.

8 0

2 years ago

Susan purchased a prepaid phone card for $15. Long distance calls cost 9 cents a minute using this card. Susan used her card onl

likoan [24]

Answer:

33 minutes

Step-by-step explanation:

We know that the initial amount of money on the card is $15 and that she had $12.03 after the call. We can subtract 12.03 from 15 to find out how much the call cost.

15 - 12.03 = 2.97

Now that we know the cost of the call is $2.97, we can divide it by the amount it cost per minute (9 cents) for Susan to make an international call:

First, convert $2.97 to cents:

$2 is the same as 200 cents.

200 + 97 = 297

Now, take 297 and divide it by 9:

297/9 = 33

The call lasted 33 minutes.

7 0

2 years ago

An oil tank is being filled at a constant rate the depth of the oil is a function of the number of minutes has been filling, as

satela [25.4K]

We are given time in minutes.

According to given table, we are given times 0 minute, 10 minutes and 15 minutes.

And depths are given 3, 5 and 6.

Times represents x coordinates and depths represents y-coordinates.

First we need to find the depth of the tank in per unit time( in a minute).

In order to find the depth of the tank in per unit time, we need to find th slope between two coordinates.

Let us take first two coordinate made using table (0,3) (10,5)

We know, slope formula

$m=\frac{y_2-y_1}{x_2-x_1}$

Plugging values in slope formula, we get

m= $\frac{5-3}{10-0}=\frac{2}{10}=\frac{1}{5}$

We got slope m= 1/5=0.2.

We can say that depth of the tank is increasing by rate 0.2 per minute.

From the given table, we can see that for x=0, y value is 3.

Therefore, y-intercept is 3.

Let us write an equation of the line for given table in slope-intercept form y=mx+b.

Plugging values of m and b in slope-intercept form, we get

y= 0.2x+3.

We need to find the depth after 1/2 hours.

1 hour = 60 minutes,

Therefore, 1/2 hours = 60/2 = 30 minutes.

Plugging value of x=30 in above slope-intercept form of the equation, we get

y= 0.2(30)+3.

y= 3+6 = 9.

y=9

Therefore, the depth of the oil 1/2 hour after filling begins is 9 units.

5 0

3 years ago