Step-by-step explanation:
x²+3x+4=0
x²+3x_ +2=0
x²+3x_2=-2
x²+3x_2+(3x_4)²=-2+(3/4)²
(x+3/4) =-2+9_16
x+3_4 = -32+9__16 =√-23_6
x+3_4 =-√23_4
x = -3+√-23___4
x = -3- √-23___4 , -3+√-23___4 //
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Answer:
2/3
Step-by-step explanation:
the steps are in the pic above
4.3 because 5 rounds up, and 25 rounds to 30.
Ok in order to get the unit rate you need to take w.e. unit you have and make it 1, so if you have 15 degrees in 2 hours and it wants you to get the unit rate you need to find the degree it will be in 1 hour so you just take 15 and divide it by 2 and your unit rate is 7.5 degrees in one hour
D = devaugn's age
s = sidney's age
so, we know Devaugh's age is twice as Sydneys, so d = 2*s or 2s
and we know their sum is 66
or d + s = 66
since d = 2s, thus
(2s) + s = 66 <--- solve for "s" to see Sidney's age
what about Devaugn's? well d = 2s