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3 years ago

3-4 additional practice

Mathematics

2 answers:

kotegsom [21]3 years ago

8 0

i really don't understand what you are trying to say but if it was a math problem it would be -1.

Agata [3.3K]3 years ago

6 0

What additional practice do you require

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How many feet are in 2 miles 300 feet?

Stells [14]

I believe the answer would be 10,860 my friend :) good luck with your problem, and have a great day

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3 years ago

What is the slope of the line shown below?<br> A. -2<br> B. 2<br> C. - 1/2<br> D. 1/2

r-ruslan [8.4K]

It is B bc the slope would be 2/1 witch equals 2

4 0

3 years ago

PLEASE HELP!

Wittaler [7]

Answer:

See below

Step-by-step explanation:

Use the formulae directly

For a cone, with base radius = r and height = h, here are the related formula

$\textrm{Slant height l} = \sqrt{r^2 + h^2}$ (1)

$\textrm{Lateral surface area} = \pi r l$

$\textrm {Base area} = \pi r^2$

$\textrm { Total Surface Area SA} = \textrm{Base Area + Lateral Area} = \pi r^2 + \pi rl = \pi r(r + l)$ (2)

$\textrm{Volume V = } (1/3) \pi r^2h$ (3)

Therefore directly plugging in the numbers in the above equations:

Note:

l = slant height in cm
SA = total surface area in sqcm
V = Volume in cubic cm

Figure(a)

r = 4, h = 8

$\textrm{l} = \sqrt{4^2 + 8^2} =\sqrt{80} = 8.944 \\\textrm{SA} = 4\pi(4 + 8.944) = 4\pi(12.944) = 162.66\\\textrm{V} = (1/3)\pi(4^2)(8) = 134.04$

Figure(b)

r = 7, h =15

$\textrm{l} = \sqrt{7^2 + 15^2} =\sqrt{274} = 16.55$

$\textrm{SA} = 7\pi(7 + 16.55) = 517.89$

Figure (c)

r = 5, l = 8

$h = \sqrt{l^2 - r^2} = \sqrt{8^2 - 5^2} = \sqrt{39} = 6.245\\SA = \textrm{SA} = 5\pi(5 + 8) = 204.2\\V = (1/3)\pi(5^2)(6.245) = 163.5$

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2 years ago

Ronald states that The number 1/11 is not rational because when converted into a decimal it is not terminate Nathaniel says it’s

gregori [183]

Nathaniel is correct. fractions are rational numbers

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3 years ago

Solve the equation | x - 2 | = 5x + 6

Oksanka [162]

Answer:

-2/3

-0.666

Step-by-step explanation:

3 0

3 years ago