.....................7 x 5 = 35
Answer:
1/2
Step-by-step explanation:
THIS IS THE CORRECT ANSWER DONT DELETE
Answer:
-786
Explanation:
Move 4^-4 to the numerator using the negative exponent rule 1/x^-n = x^n
<em>-(3×^4)</em>
Raise 4 to the power of 4.
<em>-(3×256)</em>
Multiply 3 by 256.
<em>-1×768</em>
Multiply -1 by 768.
<em>-768</em>
Answer:
b)252 is the answer
Step-by-step explanation:
x\42=6
x=6*42
x=252
<span>204
First, lookup a standard normal table and see what the z-score is for 0.025 (one half of 100% - 95%) to allow for equal sized tails. You should find that the z-score is 1.96. That means that 95% of the time, the value should be within 1.96 standard deviations of the mean. Now let's calculate the standard deviation.
800 is 800 - 1200 = -400 to the left of the mean of 1200.
1600 is 1600 - 1200 = 400 to the right of the mean of 1200.
So we are an equal distance of 400 on both sides of the mean. And we know from the z-score of 1.96, that we're 1.96 standard deviations from the mean. So a little division will give us the standard deviation. Which is:
400 / 1.96 = 204.0816327
So the standard deviation of the light bulbs is 204</span>
