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Genrish500 [490]
3 years ago
15

What is b? − ( 3 − 6b ) = 6b + 5

Mathematics
1 answer:
zubka84 [21]3 years ago
3 0

Answer:

-1 1/2

Step-by-step explanation:

-(3-6b)=6b + 5 .remember to balance!!!!

-6b + 6b= 6b + 6b

-3=12b+5

-3+5=5-5

-8=12b   now divide since its the inverse operation

think 12/-8= -1 1/2

so B equals - 1 1/2

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A doctor is measuring the average height of male students at a large college. The doctor measures the heights, in inches, of a s
RoseWind [281]

Answer:

There is a 95% confidence that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean is:

CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}

The (1 - α)% confidence interval for population parameter implies that there is a (1 - α) probability that the true value of the parameter is included in the interval.

Or, the (1 - α)% confidence interval for the parameter implies that there is (1 - α)% confidence or certainty that the true parameter value is contained in the interval.

The 95% confidence interval for the average height of male students at a large college is, (63.5 inches, 74.4 inches).

The 95% confidence interval for the average height of male students (63.5, 74.4) implies that, there is a 0.95 probability that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

Or, there is a 95% confidence that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

4 0
3 years ago
What time is shown on the clock
natita [175]

Answer:

9:18

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3 0
3 years ago
Read 2 more answers
Can you help with this I don’t know how to solve this.
Triss [41]

Answer:

arclength = 13.44 ft

Step-by-step explanation:

We are given PS = 28 feet, which is the length of the diameter.

The formula for arc length is  2\pi r\frac{x}{360}, where x is the degrees.

So, we need to find the radius. We know that the radius is half of the diameter, so:

\frac{28}{2}=14 ft

We also need to find ∠TXS. Since we know the diameter is a line that crosses the center point of the circle, we also know that ∠PXT and ∠TXS add up to 180°. So:

∠PXT + ∠TXS = 180

125 + ∠TXS = 180

∠TXS = 180 - 125

∠TXS = 55°

Now, we can use the arc length formula:

arclength=2\pi r\frac{x}{360}

arclength=2\pi (14)\frac{55}{360}

arclength=13.43903524...

arclength = 13.44 ft

Check my work to make sure! Hope this helps!

7 0
3 years ago
How to simplify question (c) ?
Natasha2012 [34]

Answer:

Step-by-step explanation:

You are multiplying the identity matrix by another matrix.  

The effect of multiplying

1  0  0

0  1  0

0  0  1

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3 0
3 years ago
2x2 = 4 4x 10 = 40 x 32 = ?
nikklg [1K]

Answer:

1280

Hope this helped :D

8 0
3 years ago
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