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3 years ago

How can I work this out or solve this?

Mathematics

1 answer:

Ede4ka [16]3 years ago

7 0

Add it all up, the answer would be B. 2.37

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Are you good at math or not good at math. Are you good at reading or are you not good at reading. Are tou good at both

SpyIntel [72]

Answer:

I am good at reading, but I am TERRIBLE at math..

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3 years ago

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Can anyone help me!

zhenek [66]

Answer:

$\large \text{$ \sf 2^{-64}$}$

Step-by-step explanation:

Given:

$\large \text{$ \sf (256)^{-4^{\frac{3}{2}}}$}$

This reads as: 256 to the power of "-4 to the power of 3/2".

Therefore, we need to deal with the "-4 to the power of 3/2" first.

Rewrite the 4 as 2²:

$\large \text{$ \sf \implies -(2^2)^{\frac{3}{2}}$}$

$\textsf{Apply exponent rule} \quad (a^b)^c=a^{bc}:$

$\large \text{$ \sf \implies -2^{\left(2 \times \frac{3}{2}\right)}$}$

$\large \text{$ \sf \implies -2^{3}$}$

Therefore:

$\large \text{$ \sf \implies -2^3=(-2)(-2)(-2) = -8$}$

Replace "-4 to the power of 3/2" with -8 :

$\large \text{$ \sf \implies 256^{-8}$}$

Rewrite 256 as 2⁸ :

$\large \text{$ \sf \implies (2^8)^{-8}$}$

$\textsf{Again, apply exponent rule} \quad (a^b)^c=a^{bc}:$

$\large \text{$ \sf \implies 2^{(8 \times -8)}$}$

$\large \text{$ \sf \implies 2^{-64}$}$

In one complete calculation:

$\large\begin{aligned} \sf (256)^{-4^{\frac{3}{2}}} & = \sf (256)^{-(2^2)^{\frac{3}{2}}}\\& = \sf (256)^{-2^{\left(2 \times \frac{3}{2}\right)}}\\& =\sf (256)^{-2^{3}}\\& = \sf (256)^{-8}\\& \sf = (2^8)^{-8}\\& = \sf 2^{(8 \times -8)}\\& =\sf 2^{-64}\end{aligned}$

Learn more about exponent rules here:

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2 years ago

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Kathleen bought some glasses. She received a rebate of $50. Of her glasses cost $125, how much did she pay?

lidiya [134]

Answer:

You will pay $62.5 for a item with original price of $125 when discounted 50%. In this example, if you buy an item at $125 with 50% discount, you will pay 125 - 62.5 = 62.5 dollars.

Step-by-step explanation:

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3 years ago

Solve the question below using two different methods.

Tatiana [17]

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3 years ago

What's x+3 = 9-4? Please help please help

erica [24]

X + 3 = 9-4

First simplify the right side.

9-4 = 5

Now you have x + 3 = 5

Now subtract 3 from both sides:

X = 2

Answer: x = 2

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3 years ago

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