Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5
The answer is -6 sorry could not explain because have to go somewhere hope it helped
F(-11/5) if f(n) = 5n + 6.
f (-11/5) = 5 (-11/5) + 6
f (-11/5) = -11 + 6
f(-11/5) = -5 :)
Answer:
D.)
×
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10
. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
Since we moved to right 5 places, the exponent is -5.
Answer:
-2
Step-by-step explanation:
that is were the x is zero