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2 years ago

12

If 2 > -a, then _____. a > 2 a > -2 a < 2 a < -2

1 answer:

photoshop1234 [79]2 years ago

8 0

Answer:

a > -2

Step-by-step explanation:

whenever we multiply, divide with "-" sign the inequality reverse its order

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7,10) and (7,20). Slope or no slope

hoa [83]

Answer: No slope

Step-by-step explanation: The line is going straight down.

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A bag contains 10 red marbles, 15 yellow marbles and 5 green marbles. What is the probability of drawing a red or green marble f

Volgvan

Probability =

(number of ways it can come out the way you want)
divided by
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Solve the equation -25p – 2 = 48 for p.<br><br> A. -2<br> B. 1<br> C. 3<br> D. 8

konstantin123 [22]

Answer:

A. -2

Step-by-step explanation:

-25p - 2 = 48

First, add 2 to both sides

That gives you

-25p = 50

Then, divide both sides by -25. Then that leaves the answer.. p = -2

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3 years ago

Problem1 The behavior of a physical system can be described by the following first order differential equation: dy/dt=2y +t^2

daser333 [38]

Answer:

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$ .

Step-by-step explanation:

Using first order linear differential equation:

$\dfrac{\mathrm{d} y}{\mathrm{d} t} = 2y + t^2$

$\frac{\mathrm{d} y}{\mathrm{d} t} - 2y =t^2$

finding integrating factor:

I.F = $e^{\int -2dt}$

I.F = $e^{-2t}$

now,

$y = \dfrac{1}{IF}(\int t^2dt+ c )$

$y = \dfrac{1}{e^{-2t}}(\int t^2dt+ c )$

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$

hence the solution is

$y = \dfrac{t^3e^{2t}}{3}+Ce^{2t}$

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3 years ago