Help please! using quadratic formula round ti nearest hundred
1 answer:
Answer:
x = 0.19 or x = -0.76
Step-by-step explanation:
Equation: 7²-4x = 2
reordering the equation,
7x²-4x-2 = 0
Applying,
x = [-b±√(b²-4ac)]/2a..................... Equation 1
From the question,
Given: a = 7, b = -4, c = -2
Substitute these values into equation 1
x = [-4±√(-4²-(2×7×-2)]/(2×7)
x = [-4±√(16+28)]/14
x = (-4±√44)/14
Either
x = (-4+√44)/14
x = (-4+6.63)/14
x = 2.63/14
x = 0.19
or
x = (-4-√44)/14
x = (-4-6.63)/14
x = -10.63/14
x = -0.76
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Step-by-step explanation:
Answer:
Step-by-step explanation:
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Apply exponent rule 
Rewrite 16 as 4²:
Apply exponent rule 
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Answer:
8
Step-by-step explanation:
first multiple 12 by 12 then divide by 18 then you'll get 2 times 4 and that's how you get 8.
Answer:
11
Step-by-step explanation:
4(s-3)-4=4+8(3)
=4+24
=28
4s-12-4=28
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s=44/4
s=11
