3 years ago

Given:

Mathematics

1 answer:

Gennadij [26K]3 years ago

5 0

I’m just doing this so i can ask more questions

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4a^2-20a+24+6y-9y^2<br>

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What is circumference and area when diameter d=13.

DerKrebs [107]

The circumference would be 40.8 and the area would be 132.7

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Find the arthmetic and the geometric means of 4 and 9

horrorfan [7]

Answer:

Step-by-step explanation:

first term (a) = 4

last term (b) = 9

Arithmetic mean (AM)

= ( a + b) / 2

= ( 4 + 9 ) / 2

= 13/2

= 6.5

Geometric mean (GM)

= √a *b

=√4 * 9

=√36

= 6

hope it helps :)

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3 years ago

What is -15.7 - (-8.2)?

cestrela7 [59]

Answer:

-7.5

Step-by-step explanation:

I used a calculator

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8^3*8^-5*8^y=1/8^2, what is the value of y in the product of powers below?

Aleks04 [339]

For this case we have that by definition of multiplication of powers of the same base, the same base is placed and the exponents are added:

$a ^ n * a ^ m = a ^ {n + m}$

So, we can rewrite the given expression as:

$8 ^ {3-5 + y} = \frac {1} {8 ^ 2}\\8 ^ {- 2 + y} = \frac {1} {8 ^ 2}$

So, if $y = 0$ :

$8 ^ {- 2} = \frac {1} {8 ^ 2}\\\frac {1} {8 ^ 2} = \frac {1} {8 ^ 2}$

Equality is met!

Answer:

$y = 0$

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3 years ago

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