Answer:
z = 2.6
Step-by-step explanation:
<u>Use the formula for z-score</u>
This tells us that this person's score of 210 places them 2.6 standard deviations above the mean
Answer:
Step-by-step explanation:
If you work through it as if you were doing polynomial long division you just have to work through the first step and then compare it to the answer. In polynomial long division you always divide the leading term of the dividend and divide it by the leading term of the divisor. In this case 24x^2 /ax = -8x. So this is a pretty simple calculation to find what a is. the xs cancel out so you get 24x/a = -8x and from here you can divide both sides by x, multiply both sides by a and then divide both sides by -8.
24x/a = -8
24/a = -8
24 = -8a
-3 = a
Now just follow through with the whole long division to make sure, but using this method should get you the right answer.
Step-by-step explanation:
This actually depends in different problem but the way I think your talking about is the easiest way.
Problem: 80% of 385
Step 1 You will be Multiplying
Step 2. Move the decimal to the left by 2 places.
Example: 385
x .80
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Step 3 do the problem
example: 385
x.80
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308.0% is the percentage
make sure to drop the decimal but if there there nothing after it don't leave it in your final answers ( some teachers mark it wrong when it really it's not wrong just improper format)
Use a calculator I will help you! ➕➖➗✖️
Initial cost of vacuum cleaner is = 248
tax is 6% = 6/100. 248 x 0.06 = 14.88
Thus, final cost of vacuum cleaner is 248 + 14.88 = $262.88
That is one expensive vacuum cleaner
