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skelet666 [1.2K]
3 years ago
7

Which is equal to 42 • 48? a. 416 b. 410 c. 46 d. 4−6

Mathematics
2 answers:
umka21 [38]3 years ago
5 0
So With Questions Like These 
Remember, 
Multiply = add the exponents 
Divide = Subtract the Exponents
AND ALWAYS KEEP THE BASE

So Its B
liq [111]3 years ago
5 0

Answer:

4^{-6}

Step-by-step explanation:

Given :4^2 \div 4^8

To Find :Which is equal to 4^2 \div 4^8 ?

a.4^{16}

b. 4^{10}

c. 4^6

d. 4^{-6}

Solution:

4^2 \div 4^8

Property : a^x \div a^y = a^{x-y}

Using the property :

4^{2-8}

4^{-6}

So, 4^2 \div 4^8 = 4^{-6}

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daser333 [38]
It should be 5. When you distribute the 4, it turns into 4x then (4•-7) = -28. Add 28 to -8 and you get 20. Divide 4 on Both sides and X=5
6 0
4 years ago
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Prove:- sin^2A-cos^2B=sin^2B-cos^2A<br>​
tankabanditka [31]

Step-by-step explanation:

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2:open the brackets and put signs accordingly.

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4 0
2 years ago
Write the direct variation if y=3 and x=10
anyanavicka [17]

Answer:

3/10

Step-by-step explanation:

6 0
3 years ago
Can anyone help me?
frozen [14]
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   =  ------------------ * ---------
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6 0
3 years ago
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g
givi [52]

Given :

An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g of an alloy containing 92% copper.

To Find :

How many grams of copper are in the resulting mixture what percentage of the resulting mixture is copper.

Solution :

Mass of copper in 50 gm alloy = 50\times 0.12 = 6\ gram.

Mass of copper in 78 gm alloy = 78\times 0.98 = 76.44\ gram.

Total mass of copper, ( 6 + 76.44 ) gm = 82.44 gram.

Percentage of copper in resulting mixture :

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Hence, this is the required solution.

8 0
4 years ago
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