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2 years ago

HELPPP!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Neko [114]2 years ago

5 0

Answer:

Step-by-step explanation:

Because of the exponent in x²

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What is the probability of landing on a multiple of 3 in a twenty-sided die?

scoray [572]

Answer:

1by 20

Step-by-step explanation:

no of digit by no of sides

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2 years ago

(3/8+2/3)+1/3 what would it be

sergij07 [2.7K]

Answer:

1.375 or 1/38

Step-by-step explanation:

(3/8+2/3)+1/3

(1.04166666667)+1/3

1.375 or 1 3/8

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2 years ago

A jumbo crayon is composed of a cylinder with a conical tip. The cylinder is 12 cm tall with a radius of 1.5 cm, and the cone ha

s2008m [1.1K]

Answer:

Part 1) The lateral area of the cone is $LA=2\pi\ cm^{2}$

Part 2) The lateral surface area of the cylinder is $LA=36\pi\ cm^{2}$

Part 3) The surface area of the crayon is $SA=41.50\pi\ cm^{2}$

Step-by-step explanation:

Part 1) Find the lateral area of the cone

The lateral area of the cone is equal to

$LA=\pi rl$

we have

$r=1\ cm$

$l=2\ cm$

substitute

$LA=\pi (1)(2)$

$LA=2\pi\ cm^{2}$

Part 2) Find the lateral surface area of the cylinder

The lateral area of the cylinder is equal to

$LA=2\pi rh$

we have

$r=1.5\ cm$

$h=12\ cm$

substitute

$LA=2\pi (1.5)(12)$

$LA=36\pi\ cm^{2}$

Part 3) Find the surface area of the crayon

The surface area of the crayon is equal to the lateral area of the cone, plus the lateral area of the cylinder, plus the top area of the cylinder plus the bottom base of the crayon

Find the area of the bottom base of the crayon

$A=\pi[r2^{2}-r1^{2}]$

where

r2 is the radius of the cylinder

r1 is the radius of the cone

substitute

$A=\pi[1.5^{2}-1^{2}]$

$A=1.25\pi\ cm^{2}$

Find the area of the top base of the cylinder

$A=\pi(1.5)^{2}=2.25\pi\ cm^{2}$

Find the surface area

$SA=2\pi+36\pi+2.25\pi+1.25\pi=41.50\pi\ cm^{2}$

8 0

3 years ago

Read 2 more answers

Help thank you Xxxxxx

butalik [34]

Answer:

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Determine the vertex of the relation y = -2x2 - 8x + 1 by partial factoring. Show all of your steps.

lisabon 2012 [21]

1) the vertex of a parable is given for two points, ( -b/2a, -b2-4ac/4a)

2) Now substitute the values in the equation

x = - (-8)/2(-2) = 8/ -4 = -2

y = -(8^2-4(-2)(1)/ 4(-2) = -(64-8) /-8 = 56/8 = 7

v(-2,7)

5 0

3 years ago