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3 years ago

I need help on this question Factor by grouping. 2u^3+3u^2+14u+21

Mathematics

1 answer:

Andru [333]3 years ago

6 0

U^2(2u+3)+7(2u+3)

(u^2+7)(2u+3)

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Veronika [31]

Answer:

1) A giraffe's heart will beat 910 times in 14 minutes

Table for 1)

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7 0

3 years ago

Find x. 300 043 00. 083 08 00 02 V3

____ [38]

Answer:

Therefore the value of x is 8 unit.

Step-by-step explanation:

Given:

In Right Angle Triangle ABC

angle B = 90°

angle C = 30°

AB = 4

To Find:

AC = Hypotenuse = ?

Solution:

In Right Angle Triangle ABC Sine Identity we have

$\sin C = \frac{\textrm{side opposite to angle C}}{Hypotenuse}\\$

Substituting the given values we get

$\sin 30 = \frac{AB}{AC}$

$\dfrac{1}{2} =\dfrac{4}{x}\\\\\therefore x=4\times 2=8\\\\\therefore x =8$

Therefore the value of x is 8 unit.

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3 years ago