Step-by-step explanation:
Step-by-step explanation:
Expand: 4.2×5.1×x+4.2×6.8
4.2×5.1×x to (21.42)x
Simplify: 21.42x+4.2×6.8
4.2×6.8 = 28.5628.56
21.42x+28.56
Since the number '8' is located in the ten thousands place, the value of '8' is 80,000
Answer:
$69
Step-by-step explanation:
Given
Required
Determine the cash before purchase
To get the her amount before the purchase, we simply add both given parameters together.
This is done as follows;
Substitute 0 for Amount Left and 60 for Purchase
<em>Hence, she had $69 before the purchase</em>
3x^2-10x-8
= 3x^2+2x-12x-18 (write it as a difference)
= x•(3x+2)-4(3x+2)
= (3x+2)• (x-4)
To factor this you need values that add up to 2 and multiply to -15
So you get 5,-3 then you put it into your equation for you b value
X^2+5x-3x-15
Then you can factor by grouping
X(x+5)-3(x+5)
So your factors are
(X+5)(x-3)