4 years ago

Question 1

Mathematics

1 answer:

Elden [556K]4 years ago

4 0

1. is B
2. is A
3. is C
4. is B
5. ? what graphs

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Simplify completely the quantity 14 times x to the 5th power times y to the 4th power plus 21 times x to the third power times y

timofeeve [1]

We have to simplify the given expression:

$\frac{14x^5y^4+21x^3y^2}{7x^3y}$

Dividing the terms of the numerator by the given term of denominator individually, we get

= $\frac{14x^5y^4}{7x^3y}+\frac{21x^3y^2}{7x^3y}$

By using the laws of exponent, $a^m \div a^n = a^{m-n}$ , we get

= $\frac{7 \times 2 x^5y^4} {7x^3y} + \frac{7 \times 3 x^3y^2}{7x^3y}$

= $\frac{2 x^5y^4} {x^3y} + \frac{3 x^3y^2}{x^3y}$

= ${2 x^{5-3}y^{4-1}} + 3 y^{2-1}$

= ${2 x^{2}y^{3}} + 3 y$

Therefore, the simplification of the given expression is ${2 x^{2}y^{3}} + 3 y$ .

So, Option 3 is the correct answer.

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Tabitha and her parents drive to Dallas for a wedding. After 90 minutes, Tabithas father tells Her they have traveled 105 miles

Dmitriy789 [7]

Remember distance divided by time so 105/90 =1.17

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Octavia can type 60 words per minute. Write the ordered pairs number of minutes, number of words for Octavia typing for 0,1,2, a

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(0,0) (1,60) (2,120) (3,180)

60 words per minute means 60 words in 1 minute. As an ordered pair, this is (1,60). The number of words is 60 times the number of minutes.

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