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2 years ago

Someone plesae answer this!!

Mathematics

2 answers:

likoan [24]2 years ago

3 0

Answer:

7 units

Step-by-step explanation:

kramer2 years ago

3 0

Answer:

7 units is the answer

Step-by-step explanation:

points are (-9,-8) and (-2,-8)

Pythagorean theorem can written as,

$d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(-2-(-9))^2 + (-8-(-8))^2}\\\\d=\sqrt{(7\\)^2+(0)^2} \\\\d=\sqrt{49} \\\\d=7 \\\\$

∴ d = 7 units

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Need help!!! solve for p) n = (p-k) ------ j Sorry for the terrible fraction

almond37 [142]

Answer:

nj +k = p

Step-by-step explanation:

n = (p-k)/j

Multiply each side by j

nj = (p-k)/j *j

nj = p-k

Add k to each side

nj +k p-k+k

nj +k = p

8 0

2 years ago

Read 2 more answers

Which one does not belong?

avanturin [10]

Answer:

last one - 4/-2

Step-by-step explanation:

two minus(-) becomes a plus(+)

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3 years ago

What are the coordinates of point B in the diagram?

Monica [59]

The correct answer would be (4,-5)

4 0

2 years ago

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A tank contains 1600 L of pure water. Solution that contains 0.04 kg of sugar per liter enters the tank at the rate 2 L/min, and

goldfiish [28.3K]

Let S(t) denote the amount of sugar in the tank at time t. Sugar flows in at a rate of

(0.04 kg/L) * (2 L/min) = 0.08 kg/min = 8/100 kg/min

and flows out at a rate of

(S(t)/1600 kg/L) * (2 L/min) = S(t)/800 kg/min

Then the net flow rate is governed by the differential equation

$\dfrac{\mathrm dS(t)}{\mathrm dt}=\dfrac8{100}-\dfrac{S(t)}{800}$

Solve for S(t):

$\dfrac{\mathrm dS(t)}{\mathrm dt}+\dfrac{S(t)}{800}=\dfrac8{100}$

$e^{t/800}\dfrac{\mathrm dS(t)}{\mathrm dt}+\dfrac{e^{t/800}}{800}S(t)=\dfrac8{100}e^{t/800}$

The left side is the derivative of a product:

$\dfrac{\mathrm d}{\mathrm dt}\left[e^{t/800}S(t)\right]=\dfrac8{100}e^{t/800}$

Integrate both sides:

$e^{t/800}S(t)=\displaystyle\frac8{100}\int e^{t/800}\,\mathrm dt$

$e^{t/800}S(t)=64e^{t/800}+C$

$S(t)=64+Ce^{-t/800}$

There's no sugar in the water at the start, so (a) S(0) = 0, which gives

$0=64+C\impleis C=-64$

and so (b) the amount of sugar in the tank at time t is

$S(t)=64\left(1-e^{-t/800}\right)$

As $t\to\infty$ , the exponential term vanishes and (c) the tank will eventually contain 64 kg of sugar.

7 0

3 years ago

A superhero can fly from New York to Los Angeles in 30 minutes. The distance from New York to Los Angeles is approximately 2450

bulgar [2K]

Answer:

So the superhero covers 2450 miles in 30 minutes or 1/2 hour

Thus, he/she will cover (2450 x 2) miles in 1 hour

Therefore the answer is his/her velocity is (2450 x 2) miles/hour = 4900 miles/hour.

Hope this helps!

-Agarvated

3 0

2 years ago