3 years ago

How much is: 4(2c+3) =28

Mathematics

2 answers:

Lady bird [3.3K]3 years ago

5 0

Answer:

c=2

Step-by-step explanation:

4(2(2) + 3)

4(4 + 3)

4(7)

Tju [1.3M]3 years ago

4 0

Step-by-step explanation:

hope this helps. if you have any questions, don't hesitate to message. :)

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Calculate the value of angle A and C of ∆ ABC. Where b=1435cm, a= 782cm and B= 115.6°.

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The Law of Sines says

$\dfrac{\sin A}{a} = \dfrac{\sin B}{b} = \dfrac{\sin C}{c}$

$\sin A = \dfrac a b \sin B$

$A = \arcsin( \dfrac{782}{1435} \sin 115.6 ) = 29.44^\circ$

We don't have to worry about the obtuse supplement because a triangle can only have one obtuse angle, and that's B.

$C = 180 - 115.6 - 29.44 = 34.96^\circ$

Answer: A=29.44°, C=34.96°

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300 + 40 + 7/10 + 5/100 + 3/1000

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Step-by-step explanation:

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Step-by-step explanation:

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