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4 years ago

Evaluate.

Mathematics

1 answer:

Daniel [21]4 years ago

3 0

Answer:

d) 192

Step-by-step explanation:

Your calculator can do this for you.

Or, you can simplify to

$12\cdot\dfrac{4^{-2}}{4^{-4}}=12(4^{-2+4})=12(4^2)=192$

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The formula for the surface area of a circular cylinder is SA = 2πr 2 + 2πrh cubic units. What do 2πr 2 and 2πrh represent?

Molodets [167]

Remember
area=pir^2
circumference=2pir

the surface aera if you thinkg about it is
2 times the tops+area around

the tops are circles so 2*pir^2 is tops

the area around is a rectangle that has been wrapped around the cylinder,
the hieght is the legnth and the circumference is width
so 2hpir is the area around

2pir^2 is the areas of the tops
2hpir is the area around

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4 years ago

746.47 round to the nearest tenths

Stells [14]

Your answer would be 746.5.

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3 years ago

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lana [24]

Answer:

Step-by-step explanation:

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4 years ago

PLEASE HELP! Two complementary angles measure (12x - 18) and (5x +23). What is the measure of the smaller angle? (1) 5 (2) 42 (3

FromTheMoon [43]

Answer:

Step-by-step explanation:

firstly, what are complementry angles.complementary angles are angles that su

m up to 90°

(12x-18)+(5x+23)=90

collecting like terms

12x+5x+23-18=90

17x-5-90=0

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divide through by 17

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3 years ago

A triangle has sides of lengths 4, 3, and 5. Is it a right triangle Explain.

Inessa05 [86]

Hey!!!

It is a right angle.

The answer is yes; 4^2+3^2=5^2 [option D]

please see the attached picture for full solution

Hope it helps

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3 years ago