30 gallons per hour to quarts per hour

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

30 gallons per hour converts to 120 quarts per hour

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Cna i get some help with dis plz

Tomtit [17]

Let $b_1,b_2,\ldots,b_{20}$ be the 20 marks of the boys, and $g_1,g_2,\ldots,g_{10}$ be the 10 marks of the girls.

We know that the global mean was 70, meaning that

$\dfrac{b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}}{30}=70$

Multiplying both sides by 30 we deduce that the sum of the scores of the whole classroom is

$b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}=2100$

By the same logic, we work with the marks of the boys alone: we know the average:

$\dfrac{b_1+b_2+\ldots+b_{20}}{20}=62$

And we deduce the sum of the marks for the boys:

$b_1+b_2+\ldots+b_{20}=1240$

Which implies that the sum of the marks of the girls is $2100-1240=860$

And finally, the mean for the girls alone is

$\dfrac{860}{10}=86$

6 0

2 years ago

Julie made $22,$55,38,25 how much did she made ?

Dennis_Churaev [7]

Are you trying to add together everything she made in a span of time? If so:
22 + 55 + 38 + 25 = 140

7 0

2 years ago

A square fits exactly inside a circle with each of its vertices being on the circumference of the circle.

swat32

Answer:

The side of the square is 5.971 cm

Step-by-step explanation:

If the square fits the circle exactly, then its diagonal is equal to the diameter of the circle. Since the side of the square has a length of $x$ cm, then it's diagonal have the length of $x\sqrt2$ cm. Using the circle's area we can find the diagonal of the square, as shown below: