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3 years ago

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math problem 8th grade the gonzalez family drove from 10:38 a.m. - 2 05 p.m. how long did they drive? is it 3hours & 37minut

es?

1 answer:

lisabon 2012 [21]3 years ago

7 0

The answer to it is 3hours and 43 minutes

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Is there a relationship between area or perimeter of a rectangle

Arturiano [62]

Hello,

For a given perimeter (P) there are an infinity of Area (A)
Let's say x the length, and y the wide of the rectangle

P=2(x+y)
A=xy
k=x-y >=0

As (x+y)²-4xy=(x-y)²: A²-4P=k² or P=(A²-k²)/4
In primus, you will find a graph (abacus) giving P for a A and k given.
Negative Area or P are excluded.(just remind the first quadrant, A>=0 and P>=0)

4 0

3 years ago

Mrs. Pens spent 1/3 of her paycheck on her grooves and household goods and paid bills with 5/12 of the pay check. She then depos

gulaghasi [49]

Answer: the fraction of her paycheck that she deposited in each account is 1/12

Step-by-step explanation:

Mrs. Pens spent 1/3 of her paycheck on her grooves and household goods and paid bills with 5/12 of the pay check. It means that the total amount that she spent is

1/3 + 5/12 = 9/12

The amount of money she has left would be

1 - 9/12 = 3/12

She then deposited the rest of the money equally in 3 accounts. Therefore, the fraction of her paycheck that she deposited in each account is

3/12 ÷ 3

= 3/12 × 1/3

= 1/12

3 0

3 years ago

Somebody help me plz

natima [27]

Answer:

1/3

Step-by-step explanation:

5 0

3 years ago

What is x^2 + x^2 + x^2 equal to? please give clear explanation. Thanks!

Anna35 [415]

$x^{2} + x^{2} + x^{2} =3 x^{2}$

6 0

3 years ago

Read 2 more answers

According to Boyle's Law, if the temperature of a confined gas is held fixed, then the product of the pressure P and the volume

Bad White [126]

If <em>PV</em> = 800, then <em>P</em> can be written as a function of <em>V</em>,

<em>P(V)</em> = 800 / <em>V</em>

(a) The average rate of change of <em>P</em> as <em>V</em> increases from 200 to 250 in³ is then

(<em>P</em> (250) - <em>P</em> (200)) / (250 in³ - 200 in³) = (3.2 lb/in² - 4lb/in²) / (50 in³)

... = -0.016 (lb/in²)/in³

(Or -0.016 lb/in⁵, but I figure writing the rate as (units of pressure) per (unit volume) makes more sense.)

(b) We can also write <em>V</em> as a function of <em>P</em> :

<em>V(P)</em> = 800 / <em>P</em>

Take the derivative:

<em>V'(P)</em> = - 800 / <em>P</em>²

which immediately demonstrates that <em>V'(P)</em> ∝ 1 / <em>P</em>², as required. (The fish-looking symbol, ∝, means "is proportional to".)

If differentiating is supposed to be more involved, you can use the limit definition:

$V'(P)=\displaystyle\lim_{h\to0}\frac{V(P+h)-V(P)}h$

$V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800}{P+h}-\frac{800}P}h$

$V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800P-800(P+h)}{P(P+h)}}h$

$V'(P)=\displaystyle800\lim_{h\to0}\frac{-\frac h{P(P+h)}}h$

$V'(P)=\displaystyle-800\lim_{h\to0}\frac1{P(P+h)}=-\dfrac{800}{P^2}$

7 0

3 years ago