3 years ago

A. Region C B. Region D C. Region A D. Region B

Mathematics

2 answers:

elixir [45]3 years ago

6 0

Answer:

Step-by-step explanation:

kati45 [8]3 years ago

6 0

C................................

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Josephine solved a quadratic equation. Her work is shown below.

mariarad [96]

Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49 means : (x + 7)² = 7²

(x + 7)² - 7²=0 use identity : a²-b² = (a-b)(a+b)

a=x+7 and b= 7

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The radius of the base of a metallic rod is 2 centimeters, and its height is 15 centimeters. What is the volume of this cylinder

snow_tiger [21]

Answer:

A) 60π cm³

Step-by-step explanation:

Given:

The radius of the base of a metallic rod is 2 centimetres, and its height is 15 centimetres.

Question asked:

What is the volume of this cylinder?

Solution:

As we know''

$Volume\ of\ cylinder=\pi r^{2} h$

$=\pi \times2\times2\times15\\ \\ =60\pi$

Therefore, the volume of this cylinder will be $60\pi\ cm^{3}$

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