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3 years ago

HELP!!!

Mathematics

1 answer:

andreev551 [17]3 years ago

8 0

Answer: 59.98

Step-by-step explanation: :)

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50 POINTS!!! ASAP plz answer all questions will give brainiest!!!!

Sedaia [141]

Answer:

1. $27x^{2} -78x+16$

2. not completely sure but i think its $x= -2 + 3i$

3.x = 2 i √ 5 , − 2 i √ 5

4.x = − 9 ± √ 73 /2

5. Im not sure...

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3 years ago

You were just hired as an apprentice architect. Your starting salary is $68,000 annually. What is your semimonthly salary

Vikki [24]

Annual = $68,000
Semiannual = $34,000
Monthly = $5,666.67
Semimonthly or bimonthly = $2,833.33
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3 years ago

The graph of y=-3x+ 2 is:

Alexeev081 [22]

Answer:

Step-by-step explanation:

This is a linear function whose slope is -3 and whose y-intercept is (0, 2). Answer A is correct.

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3 years ago

Given that the lines are parallel, what would be the value of angle "a" in the diagram found below?

yawa3891 [41]

Cannot be determined as there isn’t an angle

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3 years ago

Read 2 more answers

Solve the given initial-value problem. the de is of the form dy dx = f(ax + by + c), which is given in (5) of section 2.5. dy dx

shutvik [7]

$\dfrac{\mathrm dy}{\mathrm dx}=\cos(x+y)$

Let $v=x+y$ , so that $\dfrac{\mathrm dv}{\mathrm dx}-1=\dfrac{\mathrm dy}{\mathrm dx}$ :

$\dfrac{\mathrm dv}{\mathrm dx}=\cos v+1$

Now the ODE is separable, and we have

$\dfrac{\mathrm dv}{1+\cos v}=\mathrm dx$

Integrating both sides gives

$\displaystyle\int\frac{\mathrm dv}{1+\cos v}=\int\mathrm dx$

For the integral on the left, rewrite the integrand as

$\dfrac1{1+\cos v}\cdot\dfrac{1-\cos v}{1-\cos v}=\dfrac{1-\cos v}{1-\cos^2v}=\csc^2v-\csc v\cot v$

Then

$\displaystyle\int\frac{\mathrm dv}{1+\cos v}=-\cot v+\csc v+C$

and so

$\csc v-\cot v=x+C$

$\csc(x+y)-\cot(x+y)=x+C$

Given that $y(0)=\dfrac\pi2$ , we find

$\csc\left(0+\dfrac\pi2\right)-\cot\left(0+\dfrac\pi2\right)=0+C\implies C=1$

so that the particular solution to this IVP is

$\csc(x+y)-\cot(x+y)=x+1$

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3 years ago