What is the answer to 15-0.5^x=-6 ?

The answer to 15-0.5^x=-6 is x=(ln(21))/(ln(0.5))

Solve for x: 15-0.5^x=-6

The solution is x=(ln(21))/(ln(0.5))

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15 - 0. 5^{x} = - 6

x = \frac{ln ( 21 )}{ln ( 0.5 )}

Decimal Notation

x = - 4.39231 \dots

Solution steps

15 - 0. 5^{x} = - 6

Move

15

to the right side

- 0. 5^{x} = - 21

Divide both sides by

- 1

0. 5^{x} = 21

Apply exponent rules

x ln (0.5) = ln (21)

Solve

x ln (0.5) = ln (21) : x = \frac{ln ( 21 )}{ln ( 0.5 )}

x = \frac{ln ( 21 )}{ln ( 0.5 )}

a, m^{a + 1} = \frac{1}{2}

64 = 2^{x}

2 = (1.1)^{x}

x, y^{12} = y^{2 x}

2^{x} + 2^{3 x} = 10

What is the answer to 15-0.5^x=-6 ?
The answer to 15-0.5^x=-6 is x=(ln(21))/(ln(0.5))
Solve for x: 15-0.5^x=-6
The solution is x=(ln(21))/(ln(0.5))