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If we take the logarithm of both sides, then it is log(4^x) = log(128). Then from logarithm rules, this can be changed to: x*log(4) = log(128), then x = log(128)/log(4). You can punch this into a calculator and get the answer, but what if we use log base 2, we don't need a calculator. So log2(4) = 2, because 2² = 4. And log2(128) = 7, because 2^7 = 128. So we have x = 7/2 = 3.5, then you can check your answer: 4^3.5 = (4^3)*(4^.5). So 4 cubed = 64, and 4 raised to the 1/2 power is the square root of 4, which is 2. So 64 times 2 = 128.
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What is the answer to 2x4 to the third power?
2*(4*4*4)=128
Solve the equation a plus 4 equals 10?
a + 4 = 10(a + 4) - 4 = 10 - 4a = 6
How do you solve 4x equals 28?
Divide 28 by 4. X = 7
Solve for y 7x plus y equals 4?
7x + y = 4y = 4 - 7x
What times 4 equals 3?
To solve the equation "What times 4 equals 3," you would need to divide 3 by 4. The answer is 0.75. This is because 4 multiplied by 0.75 equals 3.
How do you solve 3 to the power of what equals 81?
34 = 81 so x is 4
What is 128x4?
128 x 4 = 512
How do you solve x plus x plus x plus x equals 128?
To solve x + x + x + x, set the problem up as multiplication like this 4x = 128. Divide both sides of the problem by 4. You will get x = 32. To check your work, substitute 32 for the x and do the math. 4 x 32 = ?. If the answer is 128, the answer is correct.
What is -4 to the 4 power?
128
What equals 4 times 32?
It is: 4*32 = 128
What is 4 by the power of 7?
4 to the power of 7 is 128
What is 4 to the third power plus 4 to the third power?
128
How many quarts in 128 ounces?
128 ounces equals 1 US gallon or 4 US quarts.
How do you solve this equation -a equals -4?
Easy! if -a = -4 then a = 4!!
How many tablespoon equals to 4 pints?
128 tbsp
How many liters equals 4 cubic feet?
128
What is the answer to 2x4 to the third power?
2*(4*4*4)=128
