All categories

3 years ago

Plzzzzzzzzzzzzzzz help

Mathematics

1 answer:

mash [69]3 years ago

5 0

Increasing on:
(−∞,1)
Decreasing on:
(1,∞)

You might be interested in

Of 97 adults selected randomly from one city, 63 have health insurance. Create a 95% confidence interval for the true proportion

Flura [38]

Answer: 95% confidence interval would be (0.555,0.745).

Step-by-step explanation:

Since we have given that

n = 97

x = 63

So, we get that

$\hat{p}=\dfrac{x}{n}=\dfrac{63}{97}=0.65$

At 95% confidence interval , z = 1.96

so, Margin of error would be

$z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\=1.96\times \sqrt{\dfrac{0.65\times 0.35}{97}}\\\\=0.095$

So, interval would be

$p\pm 0.095\\\\=0.65\pm 0.095\\\\=(0.65-0.095,0.65+0.095)\\\\=(0.555,0.745)$

Hence, 95% confidence interval would be (0.555,0.745).

5 0

3 years ago

If an employee earns $20.00 per hour plus $1.50 per hour for vacation and you pay $2.00 per hour in tax and $9.00 for every $100

Mila [183]

20 + 1.5 = 21.5
- 2 = 19.5
so hourly he gets paid $19.50

6 0

4 years ago

Which linear function has the same y-intercept as the one that is represented by the graph?

artcher [175]

I think the answer is y=2x+3

7 0

3 years ago

Read 2 more answers

If the line x = 3 is the axis of symmetry of a parabola, which coordinates below could be x-intercepts of the parabola?

guapka [62]

Answer:

(-1,0) and (5,0)

Step-by-step explanation:

8 0

3 years ago

How to find the measure of an exterior angle on a triangle

nexus9112 [7]

Hi there!

There are many ways to find the measure of an exterior angle of a triangle. I'll explain the easiest method to you. As you can see in the image, a line is drawn extending a side of the triangle. In order to find the measure of the exterior angle, we can subtract the measure of the adjacent interior angle from 180 (a straight angle). Doing this subtraction will give us the measure of the exterior angle.

Hope this helps!! :)

6 0

3 years ago

Read 2 more answers