3 years ago

Evaluate the following Expressions 81 take away 97

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

97-81=16 evaluate means solve the problem

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mina [271]

A because you subtract 15from 20 and it =5 or 1/4

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3 years ago

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If 3x-y=123x−y=123, x, minus, y, equals, 12, what is the value of \dfrac{8^x}{2^y} 2 y 8 x start fraction, 8, start superscrip

julia-pushkina [17]

Answer:

$2^{12}=4,096$

Step-by-step explanation:

You know that $3x-y=12$ and have to find

$\dfrac{8^x}{2^y}$

Use the main properties of exponents:

1. $(a^m)^n=a^{m\cdot n}$

2. $\dfrac{a^m}{a^n}=a^{m-n}$

Note that

$8=2^3,$

then

$7^x=(2^3)^x=2^{3\cdot x}=2^{3x}$

Now

$\dfrac{8^x}{2^y}=\dfrac{2^{3x}}{2^y}=2^{3x-y}$

Since $3x-y=12,$ then $2^{3x-y}=2^{12}=4,096$

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3 years ago

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-4(3s)+2 (-t); for s = 1/2, t = -3 please help me

kumpel [21]

Hi there. :)

I'll try to make this simpler for you.

Let's focus on the equation from left to right, to avoid clutter.

-4(3 * 1/2) = -4(1.5)

Now to the right.

+ 2(3) = + 6

Now combine!

-4(1.5) + 6 =

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The answer is 0.

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4 years ago

Find the value of h in this triangle. Please and Thank you!

Dahasolnce [82]

Answer:

h= 10m

Step-by-step explanation:

1/2x12x18.2=109.2m squared

then u divide it by 21.8

109.2m2/21.8m/ 1/2=10m

h=10m

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3 years ago