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3 years ago

Plz help me ASAP!!!

Mathematics

2 answers:

Lilit [14]3 years ago

6 0

Answer:

The right answer is 45 degrees .

Lemur [1.5K]3 years ago

4 0

Answer:

45 degrees

Step-by-step explanation:

BD bisects the angle so divide it by two

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University dean is interested in determining the proportion of students who receive some sort offinancial aid. rather than exami

vladimir2022 [97]

The confidence interval is
$0.59\pm0.081$

We first find p, our sample proportion. 118/200 = 0.59.

Next we find the z-score associated with this level of confidence:
Convert 98% to a decimal: 98% = 98/100 = 0.98
Subtract from 1: 1-0.98 = 0.02
Divide by 2: 0.02/2 = 0.01
Subtract from 1: 1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 2.33.

The margin of error (ME) is given by
$ME=z\sqrt{\frac{p(1-p)}{n}}
\\
\\=2.33\sqrt{\frac{0.59(1-0.59)}{200}}=2.33\sqrt{\frac{0.2419}{200}}\approx0.081$

This gives us the confidence interval
$0.59\pm0.081$

8 0

4 years ago

The Sequence of -2,-14,-26,-38

icang [17]

Answer:

-12

Step-by-step explanation:

Since we can subtract 12 from -2 and get -14, we might try subtracting 12.

5 0

3 years ago

Help which expression represents the phrase 8 less than the product of 6 and a number x

Svetradugi [14.3K]

Answer:

8 < 6x

Step-by-step explanation:

Just write what you see by the letters

8 0

4 years ago

Xian plans to run 20 laps around a track. Each lap is 400 yards. So far Xian has to run 1680 yards around the track. What percen

tangare [24]

20 laps at 400 yds per lap = (20 x 400) = 8000 yds

1680/8000 = 0.21....multiply by 100 to get ur percent (100 x 0.21) = 21%

3 0

4 years ago

f(x) = −16x2 + 24x + 16 Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points) WILL GIVE BRAINLIEST

castortr0y [4]

Answer:

Step-by-step explanation:

f(x) = −16x2 + 24x + 16 = 0 can be reduced to -2x^2 + 3x + 2 = 0 and then to 2x^2 - 3x - 2 = 0. Solve this for x using the quadratic formula:

The discriminant is b^2 - 4ac = (-3)^2 - 4(2)(-2) = 9 + 16 = 25.

Therefore the roots are:

-(-3) ± √25 3 ± 5

x = ----------------- = ------------ => x = 2 and x = -1/2

2(2) 4

The x-intercepts are points: (2, 0) and (-1/2, 0)

Because the coefficient of the x^2 term is negative, this graph opens down and the vertex represents a maximum.

To graph this function, find and plot the vertex. It is exactly halfway between the x-intercepts, that is, at x = 1 1/4, for which the y value is 21:

vertex and maximum at (5/4, 21)

Finally, find the y-intercept. Let x = 0; we find that y = 16. The y-intercept is 0, 16)

We now have four points on the graph and know where the maximum is. Plot this max (5/4, 21) and the x-intercepts (2, 0) and (-1/2, 0), and finally the y-intercept. Draw a smooth curve through these points, remembering that the graph is symmetrical about the axis of symmetry x = 5/4.

3 0

3 years ago