Answer:
8w6{5w+2}
Step-by-step explanation:
The answer is nine and one third
2x+2y=12.........&
6x-2y=20.........$
&+$: 8x=32
x=4
2*4+2y=12
y=4
The question is incomplete.
The complete question is:
Given the functions j(x) = x² − 9 and k(x) = −x + 7, which operation results in a 3rd degree polynomial?
Answer: the multiplication of j(x) and k(x)
Explanation:
<span>1) j(x) × k(x) = (</span><span>x² − 9) ( − x + 7)</span>
<span>2) Use distributive propery:
</span>
<span>(<span>x²)(- x) + (x²) (7) + (-9)(-x) + (− 9) ( 7) = - x³ + 7x² + 9x - 63
</span></span><span><span>
</span></span><span><span>
</span></span><span><span>The exponent of x is 3, hence this is a third degree polynomial.
</span></span>
Answer:
<u>The original price of the coat was £ 275</u>
Step-by-step explanation:
1. Let's review all the information given for solving this question:
Sale price of the coat = £ 220
Discount from the original price = 20%
2. Let's find the original price of the coat
Original price of the coat = x
Sale price of the coat = £ 220
Sale price of the coat = x - 20%x
220 = x - 0.2x
220 = x - 2x/10 (0.2 = 2/10)
2,200 = 10x -2x (Multiplying by 10 at both sides)
2,200 = 8x
2.200/8 = 8x/8 (Dividing by 8 at both sides)
275 = x
<u>The original price of the coat was £ 275</u>
