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2 years ago

-3 + 8n = -5 what is n?

Mathematics

2 answers:

max2010maxim [7]2 years ago

8 0

Answer:

-1/4

Step-by-step explanation:

nirvana33 [79]2 years ago

7 0

Click link above for the answer

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The simple interest owed on a loan of $5,600 after 4 years is $1,008. What percent represents the annual interest rate on the lo

Alona [7]

9514 1404 393

Answer:

4.5%

Step-by-step explanation:

The interest is given by ...

I = Prt . . . . interest at annual rate r for t years on principal P

1008 = 5600r·4

1008/22400 = r = 0.045 = 4.5%

The annual interest rate on the loan is 4.5%.

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3 years ago

The arc of the parabola y = x^2 from (3,9) to (4,16) is rotated about the y-axis. Find the area of the resulting surface. Please

Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

Therefore, we let $u = 1 + 4x^{2}$

Thus, $du = 8dx.$

So,

$xdx = \frac{1}{8}du$

Also, the interval of the integration changes to [ 37, 65]

Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

= $\frac{1}{6} [ 65^{\frac{3}{2}-37^{\frac{3}{2} } }$

= 156.5 units²

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3 years ago

Please help I'm almost done!

lord [1]

Answer:

C) The song shop

Step-by-step explanation:

Divide all prices by the amount of songs purchased. example: 7.92/6=1.32

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3 years ago

In the triangle below, what is the tangent of 45°?

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Answer:

Step-by-step explanation:

tan45° = $\frac{opposite}{adjacent}$ = $\frac{1}{1}$ = 1

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3 years ago

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Answer:

Step-by-step explanation:

You said peter picked only one pepper

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2 years ago