Which expressions are equivalent to 2(2x + 4y + x − 2y)?
2 answers:
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Answer:
Mattison paid 54 after the discounts for 2 jeans.
Step-by-step explanation:
Original price of the jeans = 35.99
Discount on the jeans = 25%
So, discounted amount on each jeans =
So, the actual amount paid for 1 jeans = Actual Price - Discounted amount
= 35.99 - 8.99 = 27
So, the price paid for 2 jeans = 27 x 2 = 54
Hence, Mattison paid 54 after the discounts for 2 jeans.
The solutions for ‘x’ in the given equation are – 3 and - 7
<u>Step-by-step explanation:</u>
Given equation:
To find the ‘x’ value, try to factor, because in this case it works, it's fast. By using factor method, we get
(x + 3) (x + 7) = 0 (adding both value we get 10 and multiply as 21 as in equation and check with signs also while factoring)
x = - 3, -7
Verify above values by multiply both terms,
(x + 3) (x + 7) = 0
(so values obtained from factor method are correct)
Or, can use quadratic formula, for , the solutions are given by:
In the given equation, a = 1, b = 10, c = 21, apply these in above formula
So,
When
When
Hence, the values for ‘x’ are - 3 and - 7