Answer:
t ≈ -2.014 or 3.647
Step-by-step explanation:
Add the opposite of the expression on the right side of the equal sign to put the equation into standard form.
4.9t² -8t -36 = 0
You can divide by 4.9 to make this a little easier to solve.
t² -(8/4.9)t -36/4.9 = 0
Now, add and subtract the square of half the x-coefficient to "complete the square."
t² -(8/4.9)t +(4/4.9)² -36/4.9 -(4/4.9)² = 0
(t -4/4.9)² -192.4/4.9² = 0 . . . . simplify
Add the constant term, then take the square root.
(t -4/4.9)² = 192.4/4.9²
t -4/4.9 = ±(√192.4)/4.9
t = (4 ± √192.4)/4.9
t ≈ {-2.014, 3.647}
Answer:
17 centimetres
Step-by-step explanation:
16 + 1 = 17
Molly's mouse = 16 cm
Joy's mouse = 1 cm longer than Molly's mouse
Joy's mouse = 16 + 1 = 17 cm
Answer:
An equation is distinct because it has an equals sign, and that in itself creates a relationship. Usually, it's relating the left side to the right side in terms of that fact that they're equal to each other- unlike inequalities which form more of a relation between two quantities that can be greater than or less than.
Step-by-step explanation:
Answer:
Im not sure how you need the answer so i put it in different forms for you
w=1/4
w=0.25
w=2^-2
Step-by-step explanation:
They are all the same thing
For part a it’s sal will leave a $20 tip for part b sals food is $78.22 including tax and tip
