2 years ago

Tell whether the given value is a solution of the inequality.

Mathematics

1 answer:

elixir [45]2 years ago

3 0

Step-by-step explanation:

what is third law of motion/cihqepgpmy explain with example and what is different between pressure and area

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Carlos operates a helicopter. Carlos decides to measure the rotational velocity of the helicopter blades.

Margarita [4]

<em>so the correct answer would be c </em>

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3 years ago

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Values of X are solutions to the equation |x| + 31=51

RideAnS [48]

Answer:

20, -20

Step-by-step explanation:

I assume you mean |x| + 31 = 51?

that means |x| + 31 - 31 = 51 - 31

==> |x| = 20

because this is absolute value

so x = 20 or -20

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3 years ago

I can’t figure this out . I’m not good at math.

Romashka [77]

Answer: B

Step-by-step explanation:

Lol it’s ok ::

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3 years ago

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mote1985 [20]

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3 years ago

A rectangular box initially has length 3 meters, width 4 meters and height 2 meters. Its volume is increasing at a rate of 9 cub

CaHeK987 [17]

Answer:

The length of rectangular box is increasing at a rate 0.225 meters per hour.

Step-by-step explanation:

We are given the following in the question:

Initial dimensions of rectangular box:

Length,l = 3 m

Width,w = 4 m

Height,h = 2 m

$\dfrac{dV}{dt} = 9\text{ cubic meters per hour}\\\\\dfrac{dw}{dt} = \dfrac{dh}{dt} = 40\text{ centimeters per hour} =0.4\text{ meters per hour}$

We have to find the rate of increase of length.

Volume of cuboid =

$V = l\times w\times h$

Differentiating we get,

$\displaystyle\frac{dV}{dt} = \frac{dl}{dt}wh + \frac{dw}{dt}lh +\frac{dh}{dt}lw$

Putting values, we get,

$9 = \dfrac{dl}{dt}(4)(2) + (0.4)(3)(2) + (0.4)(3)(4)\\\\\dfrac{dl}{dt}(4)(2) = 9 -7.2\\\\\dfrac{dl}{dt}=0.225$

Thus, the length of rectangular box is increasing at a rate 0.225 meters per hour.

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3 years ago