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dakotamadird7452
24.07.2019 •
Mathematics
Ineed with this problem. this is confusing with this formula.
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Ответ:
v = 40 . . . ft/sec
Step-by-step explanation:
Put the value 25 where h is in the formula and do the arithmetic.
V = √(64·25) = (√64)(√25) = 8·5
V = 40 . . . . feet per second
Ответ:
4.1 Adding fractions which have a common denominator
5t - (2 • (t+4)) 3t - 8 ———————————————— = —————— 3 3 Equation at the end of step 4 : (3t - 8) ———————— - 1 = 0 3 Step 5 :Rewriting the whole as an Equivalent Fraction :Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
5.1 Subtracting a whole from a fraction
1 1 • 3 1 = — = ————— 1 3Rewrite the whole as a fraction using 3 as the denominator :
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Adding fractions that have a common denominator :Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
5.2 Adding up the two equivalent fractions
(3t-8) - (3) 3t - 11 ———————————— = ——————— 3 3 Equation at the end of step 5 : 3t - 11 ——————— = 0 3 Step 6 :When a fraction equals zero : 6.1 When a fraction equals zero ...Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
3t-11 ————— • 3 = 0 • 3 3Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
Now, on the left hand side, the 3 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
Solving a Single Variable Equation :The equation now takes the shape :
3t-11 = 0
6.2 Solve : 3t-11 = 0
One solution was found : t = 11/3 = 3.667Add 11 to both sides of the equation :
3t = 11
Divide both sides of the equation by 3:
t = 11/3 = 3.667