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katovenus [111]
3 years ago
6

Please help (Multiple choice)

Mathematics
1 answer:
Nuetrik [128]3 years ago
4 0

Answer:

y = -3x - 5 (The second option)

Step-by-step explanation:

I used a GREAT website called desmos.com that helps you plug in equations and graphs them. On the far left, you can see the point (-3,4) and the equation typed in. Really suggest using it. I use it all the time.

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Number 2 and please provide a step by step explanation!!!!
Alekssandra [29.7K]

The number of students in 5th grade is 60, since 24% of 250 is 60.

Since 90 is 38% if 250, 38 is going to be the percent of all students in sixth grade.

20% of 250 is 50, so the percent of all students in seventh grade is 50.

Finally, 45 is 18% of 250, so 18 percent of all students are in eight grade.

Hope this helped :)

8 0
2 years ago
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3 years ago
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Evaluate the integral Find the volume of material remaining in a hemisphere of radius 2 after a cylindrical hole ofradius 1 is d
algol13

You want to find the volume inside the hemisphere x^2+y^2+z^2=4 (i.e. inside the sphere but above the plane z=0) and outside the cylinder x^2+y^2=1. Call this region R.

In cylindrical coordinates, we have

\displaystyle\iiint_R\mathrm dV=\int_0^{2\pi}\int_1^2\int_0^{\sqrt{4-r^2}}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta

\displaystyle=2\pi\int_1^2 r\sqrt{4-r^2}\,\mathrm dr

\displaystyle=-\pi\int_3^0\sqrt u\,\mathrm du

(where u=4-r^2)

\displaystyle=\pi\int_0^3\sqrt u\,\mathrm du

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7 0
3 years ago
june has a savings account with an annual simple intrest rate of 2.6% she hopes to gain $6,500. in interest over a period of ele
natima [27]

To solve this, let's use the variable 'x' to represent the money invested:

11(0.026(x)) = 6500

0.286x = 6500

Divide:

x = 227272.7272...

We can round up:

x = 227272.73

June has to invest $227272.73

6 0
3 years ago
Amy earned a gross income of $51,750 last year. She made $644.28 in IRA contributions, donated $713 to her
VikaD [51]

Answer:

41,755.72

Step-by-step explanation:

6 0
3 years ago
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