Since you know that when x = 2, y = 8, when you replace x with xb:
<span>8=(xb<span>)3</span></span>
x has been replaced by xb, so xb must equal 2
and then substituting in 0.5 for x, you can solve for b
<span><span>0.5b=2</span></span>
Answer:
1.7$
Step-by-step explanation:
Given
original price = $2.87
New price = $2.82
Percentage decrease = original price-New price/New price × 100
Percentage decrease = 2.87-2.82/2.87× 100
Percentage decrease = 0.05/2.87 × 100
Percentage decrease = 5/2.87
Percentage decrease = 1.7%
The marked up price is $126. $134.82-126 =$8.82(The sales tax) :)
Answer:
It's the law of cosines
Step-by-step explanation:
law of cosines states that
so we know that a = 7, b = 4, and alpha would be 135 degrees, so just plugging it in gets us 49+16-2*7*4*(-0.707) = 65 + 39.59 = 104.59
Answer:
Step-by-step explanation:
ax^2+bx+c
-b +- sqaure root of b^2 -4ac/2a
-2 +- square root (2)^2-4(2)(-1)/2(2)
-2 +- square root 4+8 /4
-2 +- 2 square root 3 /4
reduce
-1 +- square root 3/2