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zalisa [80]
3 years ago
12

What is a - b over 2?

Mathematics
1 answer:
Nesterboy [21]3 years ago
8 0
 That would be a - \frac{b}{2}

If "a-b all over 2" then it would be \frac{a-b}{2}
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5n + 5= 45 Please help...<br><br>constant=_, coefficient=_
madreJ [45]

Answer:

Step-by-step explanation:

5n + 5 = 45

Coefficient of n = 5

Constant =  5  & 45

8 0
3 years ago
Read 2 more answers
Solve the quadratic equation by completing the square. x^2+14x+47=0. What is the form and solution?
Phoenix [80]
To complete a square for ax²+bx+c, you first make a=1.
in this case, a is already 1
move c to the right side: x²+14x=-47
next, add (1/2 of b)² to both sides, in this case, b=14, half of 14 is 7, so x²+14x+ 7²=-47+7²
the left side is now a perfect square: (x+7)²=2
x+7=√2 or x+7=-√2
x=√2-7, or x=-2-√7
4 0
3 years ago
Modeling a Scenario with a TWO-
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Answer:

Step-by-step explanation:

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3 0
2 years ago
A random sample of 35 business students required an average of 50.7 minutes to complete a statistics exam. Assume that the popul
love history [14]

Answer:

(47.3, 54.1)

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{10.4}{\sqrt{35}} = 3.4

The lower end of the interval is the sample mean subtracted by M. So it is 50.7 - 3.4 = 47.3

The upper end of the interval is the sample mean added to M. So it is 50.7 + 3.4 = 54.1

The answer is (47.3, 54.1).

6 0
3 years ago
What’s does 3/5 + 1/3 equal
Pie

Answer:

Step-by-step explanation:

3/5 + 1/3

taking lcm we get 15

=<u> 3 * 3 + 1 * 5</u>

          15

= <u>9 + 5</u>

     15

=14/ 15

4 0
3 years ago
Read 2 more answers
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