1 year ago

Drag the numbers to order them from least to greatest. -5/8 -7/9 -4/5 -3/7

Mathematics

1 answer:

nataly862011 [7]1 year ago

8 0

Answer:

- 0.8, -0.777, - 0.625, - 0.428

Step-by-step explanation:

-0,625, -0.777, -0.8, - 0,428

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Keith_Richards [23]

Answer:

x=30

Step-by-step explanation:

You have to use intercept theorem, also known as Thales's theorem to slvoe this.

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1 year ago

Write a slope-intercept equation of the line that passes through the points (4,11) and (6,8).

grin007 [14]

Answer:

y= $\frac{3}{-2}$ x +17

Step-by-step explanation:

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2 years ago

I need to find the surface area of this box. Will someone help me?

Jlenok [28]

Answer: 480. Hope it helps! :)

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2 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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2 years ago

I need help please and thank you

myrzilka [38]

Answer:

Step-by-step explanation:

Slope = y2- y1/ x2- x1

= 4 - (-2) / 3 -1

= 4+2/ 2

=6/2 = 3

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2 years ago