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2 years ago

A circle has its center at (-4,8), and just touches the y-axis

Mathematics

2 answers:

cupoosta [38]2 years ago

7 0

Answer:

r = 4 units

Step-by-step explanation:

From the question it is not clear that what you want to ask. But as per me you are interested in finding the radius of the circle.

Since, circle is touching y-axis at has a center (-4, 8) so it's radius will be equal to the x-coordinate.

Here, x - coordinate is - 4

Since radius is a non negative number.

So, r = 4 units

garik1379 [7]2 years ago

5 0

Answer:i'm a bit confused

Step-by-step explanation:

are you asking a question or not?

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The third grade class collected coins for the week.Class one raised 34.00. Class two raised 45.00 .Class three raised 76.00.How

Troyanec [42]

Answer:

160 well it was 155 but u round up to 160

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

A chemist examines 15 geological samples for potassium chloride concentration. The mean potassium chloride concentration for the

Lelu [443]

Answer:

95% Confidence interval: (0.375,0.377)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 0.376 cc/cubic meter

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation, s = 0.0012

Degree of freedom =

$=n-1\\=15-1\\=14$

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.145$

$0.376 \pm 2.145(\dfrac{0.0012}{\sqrt{15}} )\\\\ = 0.376 \pm 0.0006\\\\ = (0.3754,0.3766)\approx (0.375,0.377)$

(0.375,0.377) is the required 95% confidence interval for the population mean potassium chloride concentration.

5 0

3 years ago

Help, I need the bottom three answered and I'm sorta stuck on four too. Not sure if it's right

amm1812

5. 15 yards = 13.716 meters, so 13.716 meters
6. 32.366 meters per second
7. 32÷2=16 and 16×60= 960, so it can eat 16 in one minute, and 960 in one hour.
Hope this helps!

7 0

3 years ago

Help me plz and thx :)

ikadub [295]

Answer:

I am sure it is false. becuase a dependent variable is something you measure and you have to count the eggs.

4 0

2 years ago

A survey of 80 students found that 24 students both play in the band and play a sport. But 22 students are not in band and do no

Tatiana [17]

Answer:

Option D.

Step-by-step explanation:

Not everyone who plays band is going to be in sports or vise versa

Hope this helped!

6 0

3 years ago