X^2 + 5x = -2
x^2 + 5x + 2 = 0
x = -b (+-) sqrt (b^2 - 4ac) / 2a
a = 1, b = 5, and c = 2
x = -5 (+-) sqrt (5^2 - 4(1)(2)) / 2(1)
x = -5 (+-) sqrt (25 - 8) / 2
x = -5 (+-) sqrt (17) / 2
answer is : negative 5 plus or minus the square root of 17 divided by 2
Answer:
a = 2500mm
b = 5km
c = 2e+7
Step-by-step explanation:
Value of 5(d–2) is 45.
Option C is correct.
Step-by-step explanation:
We are given 3(d+1)=4(d–2) and we need to find the value of 5(d–2)
First we will solve 3(d+1)=4(d–2) to find value of d:
Solving:

So, value of d = 11
Now putting value of d in 5(d–2) and finding its value:

So, value of 5(d–2) is 45.
Option C is correct.
Keywords: Solving Equations
Learn more about Solving Equations at:
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Step-by-step explanation:
Solve linear equation two variable
Answer: 27 miles per gallon
Step-by-step explanation: 405/15=27