Answer:
x = -2 ±sqrt( 19)
Step-by-step explanation:
x^2 + 4x = 15
Take the coefficient of x
4
Divide by 2
4/2 =2
Square it
2^2 = 4
Add it to each side
x^2 + 4x+4 = 15+4
(x+2)^2 = 19
Take the square root of each side
sqrt( (x+2)^2) =±sqrt( 19)
x+2 = ±sqrt( 19)
Subtract 2 from each side
x+2-2 = -2 ±sqrt( 19)
x = -2 ±sqrt( 19)
We can't see the angles so we can't help you :(
Maybe take a picture of the problem(or screenshot if it's online) and edit the post.
Answer:
4:5
Step-by-step explanation:
Binh's = 40
Davina's = 50
40:50 = 4:5
Answer:
Step-by-step explanation:
Given
Represent Derrick's with D and Pauline's with P
For D
Registration Fee = $12
Hourly Charges = $5
For P
Registration Fee = $18
Hourly Charges = $3
Required
Represent as an inequality such that D is at most of P
First, we need to represent both as an expression:
For D
For P:
Since D is at most of P;
This implies that:
So, we have:
(0,16)
<span>y - 4 = -2(x - 6)
y - 4 = -2x + 12
y = -2x + 12 + 4
y = -2x + 16
and the y-intercept is (0,16) which lies on the line of </span><span>y - 4 = -2(x - 6). </span>
