<u><em>Answer: x=-25 and -25=x *The answer should be the negative sign.*</em></u>
Step-by-step explanation:
distributive property: a(b+c)=ab+ac
multiplication property of equality is multiplying both sides of an equation by the same number does not change the equation.
multiply by -5 both sides of an equation.
(-2/5x)(-5)=10(-5)
simplify by equation.
2x=-50
divide by 2 both sides of an equation.
2x/2=-50/2
simplify by equation.
50/2=25
25*2=50
50/25=2
It changes positive to negative.
x=-25 and -25=x
Hope this helps!
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Answer:
y = 70 yd
A(max) = 9800 yd²
Step-by-step explanation:
Let call " y " sides of the rectangular area running perpendicular to the river, then:
Perimeter of the area (without one side is )
P = x + 2*y and we have 280 yards of fencing material
280 = x + 2*y ⇒ y = ( 280 - x ) / 2
And rectangular area is:
A = x*y
Area as a function of x is:
A(x) = x * ( 280 - x ) / 2
A(x) = 280*x /2 - x²/2
Taking derivatives on both sides of the equation we get:
A´(x) = 140 - x = 0
140 - x = 0
x = 140 yd
And y
y = ( 280 - x ) / 2
y = 140 /2
y = 70 yd
And
A( max ) = 140*70
A(max) = 9800 yd²
Answer:
it’s the number of half the circle times 3.14 awnsers below
Step-by-step explanation:
1. 25.12
2. 9.42
3. 6.28
4. 12.56
5. 18.84
Answer:
The graph shows the solution to which inequality y>2/3x+1.
Step-by-step explanation:
hope that helps
Step-by-step explanation:
To estimate percentage I would round up the numbers to the nearest neat number? like 10 or 15 for example and then find the percentage of that number.