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Fiesta28 [93]
3 years ago
7

PLEASE HELP 4/7 = x/161

Mathematics
1 answer:
erastova [34]3 years ago
5 0
You have to cross multiply and you get the formula 7x=644.
Then you solve it to find x by dividing 7 by both sides. The seven on the left side cancels out and 644 divided by 7 is 92. So your answer is x=92.
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Read 2 more answers
Jose earns a weekly salary of $322. How much does he make in 44 weeks?
ioda

Answer:

14168

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3 0
2 years ago
Simplify polynomial
Kay [80]

Answer:

j² - 5j²k - 2

Step-by-step explanation:

3j² - j²k - 6 - 4j²k - 2j² + 4

To simplify this polynomial, we can collect like terms. A term is number(s) or variable(s) that are grouped together by multiplication. <u>Like terms have the same variable and exponent</u>.

We have three groups of like terms:

The j-squares (j²), the j-squared k (j²k) and the constants (no variable).

Remember to include the negatives!

The j-squares are: 3j² ; -2j²

The j-squares k are: - j²k ; - 4j²k

The constants are: - 6 ; 4

Simplify:

3j² - j²k - 6 - 4j²k - 2j² + 4

Rearrange the polynomial by like terms

= (- j²k - 4j²k) +  (3j² - 2j²) + (- 6 + 4)

Add or subtract the like terms

= (-5j²k) + (j²) + (-2)

Remove brackets and rearrange so the negative is not first

= j² + - 5j²k + - 2

Simplify where two signs are together. Adding a negative is subtraction.

= j² - 5j²k - 2                  Simplified

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3 years ago
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