Answer:
The solutions are {-5, 1}
Step-by-step explanation:
Next time, please use the symbol " ^ " to denote exponentiation:
x^2+4x-5=0
Start by identifying the coefficient of the x term (it is 4 here). Divide this by 2, resulting in 2. Square this result (square 2), obtaining 4.
Now add this 4 after the 4x term, and then subtract this 4:
x^2+4x +4 - 4 -5=0
Rewrite x^2+4x + 4 as (x + 2)²:
(x + 2)² - 9 = 0
Add 9 to both sides, to isolate (x + 2):
(x + 2)² = 9
Take the square root of both sides:
x + 2 = ±3
Solve for x: x = -2 + 3, or 1
x = -2 - 3, or -5
The solutions are {-5, 1}
Answer:
There are 221 hot dogs and 169 hamburgers
Step-by-step explanation:
(If you need me to explain a little clearer, please comment so I can edit!)
17 : 13 = 30
x : y = 390
390 ÷ 30 = 13
17 · 13 = x
221 = x
13 · 13 = y
169 = y
Answer:
The answer is
<h2>2.8</h2>
Step-by-step explanation:
The distance between two points can be found by using the formula
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(-1, -7) and (-3,-5)
The distance between them is
We have the final answer as
<h3>2.8 units to the nearest tenth</h3>
Hope this helps you
Answer:
As a percent, that is 88%.
Step-by-step explanation:
Add 15 to both sides
Y = -27 + 15
Y = -12
