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3 years ago

!!!Please help!!!

Mathematics

1 answer:

Ahat [919]3 years ago

3 0

2 square root of 3(im like 98% sure)

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What is the least common multiple you could use to find 4/5 + 5/6

scoray [572]

Answer: 30

Step-by-step explanation: 30 is the first multiple that both 5 and 6 share, and as such should be the denominator

5 0

2 years ago

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A bucket that weighs 5 lb and a rope of negligible weight are used to draw water from a well that is 60 ft deep. The bucket is f

mestny [16]

Answer:

The value is $W= 2640 \ ft \cdot lb$

Step-by-step explanation:

From the question we are told that

The weight of the bucket is $F = 5 lb$

The depth of the well is $x_1 = 60 \ ft$

The weight of the water is $W_w = 42 lb$

The rate at which the bucket with water is pulled is $v = 1.5 \ ft/s$

The rate of the leak is $r = 0.15 lb/s$

Generally the workdone is mathematically represented as

$W = \int\limits^{x_1}_{x_o} {G(x)} \, dx$ ]

Here G(x) is a function defining the weight of the system (water and bucket ) and it is mathematically represented as

$G(x) = F + (W_w- Ix)$

Here I is the rate of water loss in lb/ft mathematically represented as

$I = \frac{r}{v}$

=> $I = \frac{0.15 }{1.5 }$

=> $I = 0.1$

$G(x) = 5 + (42- 0.1x)$

=> $G(x) = 47- 0.1x)$

$W = \int\limits^{60}_{0} {47- 0.1x} \, dx$ ]

=> $W = [47x - \frac{0.1x^2}{2} ]|\left 60} \atop {0}} \right.$

=> $W= [47(60) - 0.05(60)^2]$

=> $W= 2640 \ ft \cdot lb$

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3 years ago

Simplify -5xy+6xy-3y+4y+x^2

Nutka1998 [239]

Answer is x^2+xy+y if the answer is correct then give me a thank

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3 years ago

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Identify the initial amount a and the growth factor b in the exponential function. f(x) = 620 • 7.8x

jenyasd209 [6]

Answer:

Initial amount (a)= 620

Growth factor (b)= 7.8

Step-by-step explanation:

620 is the initial amount and is multiplied by 7.8 x which is the growth factor.

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3 years ago

There is a ratio of 5 girls to 3 boys in the chorus. There are 24 boys in the chorus. How. many girls are in the chorus?

leva [86]

Answer: 40

Step-by-step explanation:

5/3 24/?

divided by 8 =24 divided by 8 =3

5 x 8 =40

Hope this helps :)

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3 years ago