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
Answer:
Step-by-step explanation:
1. ok so you need to use Pythagoras which is a^2 + b^2 = c^2
substituting 16 and 12 into 'a' and 'b' you get 16^2 + 12^2 = c^2
256 + 144 = c^2
400 = c^2 (square root each side to get ride of the square)
c = 20cm
2. doing the same thing you get c = 22.36 in
3. again doing it you get c = 15Ft
Hope this helps!
Beach invasions beach invasions
Answer:
L={∅}
Step-by-step explanation:
The equation in slope-intercept form that represents the total fee "y"
to become a member of the library-all-star-members club for "x"
months is y = 2 x + 40
Step-by-step explanation:
The linear in the form of slope-intercept is y = m x + c, where
1. m is the slope of the line
2. c is the y-intercept
Slope of the line represents the monthly fee ⇒ paid every month
y-intercept represents the sign-up fee ⇒ paid once
To become a member of the library-all-star-members club, there is
a $40 sign-up fee and a $2 monthly fee
∵ The monthly fee is $2
∴ m = 2
∵ The sign-up fee is $40
∴ c = 40
∴ The equation is y = 2 x + 40, where y is the total member fee for
x months in the library-all-star-members club
The equation in slope-intercept form that represents the total fee "y"
to become a member of the library-all-star-members club for "x"
months is y = 2 x + 40
Learn more:
You can learn more about linear function in brainly.com/question/4326955
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