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krok68 [10]
3 years ago
9

Simplify. Assume that no denominator is equal to zero.

Mathematics
1 answer:
aivan3 [116]3 years ago
6 0

Answer: FIRST OPTION.

Step-by-step explanation:

For this exercise it is important to remember a property called "Quotient of Powers property".

 By definition the Quotient of Powers property states the following:

\frac{a^m}{a^n}=a^{(m-n)}

You can observe the division of a^m and a^n. Since both have the same base "a" , you must rewrite the base and subtract the exponents "m" and "n".

In this case, you have the following expression given in the exercise:

\frac{4^{12}}{4^{5}}

Then, you need to apply the Quotient of Powers property rewriting the base 4 and subtracting the exponents 12 and 5.

Therefore, you get the following result:

=4^{(12-5)}=4^7

You can notice that it matches with the first option.

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Adam and Tom share a sum of money in the ratio 18:17
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x = total amount split between Adam and Tom.

since we know the total amount split between both in a 18 : 17 ratio is "x", let's divide "x" by (18 + 17) and distribute accordingly to get the amount of each.

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\stackrel{\textit{multiplying both sides by }\stackrel{LCD}{35}}{35\left( \cfrac{18x}{35} \right)~~ = ~~35\left( \cfrac{17x}{35}+5 \right)}\implies 18x~~ = ~~17x+175\implies \boxed{x =175} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{Tom~received}{17\cdot \cfrac{x}{18+17}}\implies \cfrac{17(175)}{35}\implies \blacktriangleright 85 \blacktriangleleft

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A survey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand X aspirin. How many doctors use brand X aspirin
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His answer is not reasonable because 5/8>4/3
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2 years ago
7. Explain the difference between whole numbers and counting numbers.<br>(2 marks)<br>Your answer​
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x = 4

Step-by-step explanation:

(6x - 3)° = (2x + 13)° are vertical angles that equal each other get x by itself and solve for x.

(6x - 3)° = (2x + 13)°

6x - 2x = 13 + 3

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x = 4

Substitute x for the angles.

(6x - 3)° = ?

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