1. Use the formula . Find t for r = 46.1 m/h and d = 253.55 m. Reformatting the input :
Changes made to your input should not affect the solution:

(1): "46.1" was replaced by "(461/10)". 2 more similar replacement(s)

STEP
1
:
461
Simplify ———
10
Equation at the end of step
1
:
25355 461
————— ÷ ———
100 10
STEP
2
:
5071
Simplify ————
20
Equation at the end of step
2
:
5071 461
———— ÷ ———
20 10
STEP
3
:
5071 461
Divide ———— by ———
20 10

3.1 Dividing fractions

To divide fractions, write the divison as multiplication by the reciprocal of the divisor :

5071 461 5071 10
———— ÷ ——— = ———— • ———
20 10 20 461

Final result :
11
—— = 5.50000
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hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb