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3 years ago

(3b-5)^2-c^2 how do I factor this using grouping?

Mathematics

1 answer:

klemol [59]3 years ago

3 0

So you see it is the difference of 2 perfect squares
a^2-b^2=(a+b)(a-b)
so
(3b-5)^2-c^2=(3b-5+c)(3b-5-c)

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Answer:

1: 37.5%

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Find the lateral area of a right circular cone whose radius is 6 feet and height is 8 feet.

Dmitry_Shevchenko [17]

Answer:

we know that

[the lateral area of a right circular cone]=pi*r*l

where

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Step 1

find the slant height of the cone

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3 years ago

80 decreased by 3 times a number is the same as 5 times the number increased by 8 find the number.

faltersainse [42]

Answer:

The number is 5.

Step-by-step explanation:

Let the number be $x$ .

Given $80$ is decreased $3$ times $x$ .

$\implies 80 - 3x$

$5$ times the number increased by $8$ .

$5(x + 8)$

This means:

$8 - 3x = 5(x + 8)$

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

Diagramming Percents

vekshin1

Answer:

see below

Step-by-step explanation:

Let x be the original price

x* discount rate = discount

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4 years ago