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3 years ago

9

What most accurately describes the effects of tobacco use on the body?

2 answers:

Ilia_Sergeevich [38]3 years ago

4 0

Answer:

A i believe

Step-by-step explanation:

Although nicotine is addictive, most of the severe health effects of tobacco use comes from other chemicals. Tobacco smoking can lead to lung cancer, chronic bronchitis, and emphysema. It increases the risk of heart disease, which can lead to stroke or heart attack.People who smoke cigarettes are 15 to 30 times more likely to get lung cancer or die from lung cancer than people who do not smoke. Even smoking a few cigarettes a day or smoking occasionally increases the risk of lung cancer.

mars1129 [50]3 years ago

4 0

The answer here is B, however the problem seems to be kinda obvious?

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Suppose that the population of the scores of all high school seniors that took the SAT-M (SAT math) test this year follows a Nor

abruzzese [7]

Answer:

The confidence level for this interval is 99%.

Step-by-step explanation:

The margin of error M has the following equation.

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

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

z is related to the confidence level.

In this problem:

$M = 25.76, \sigma = 100, n = 100$

So

$25.76 = z*\frac{100}{\sqrt{100}}$

$10z = 25.76$

$z = 2.576$

Looking at the z table, $z = 2.576$ has a pvalue of 0.995.

So the confidence level is:

$1 - 2(1 - 0.995) = 1 - 0.01 = 0.99$

The confidence level for this interval is 99%.

4 0

3 years ago

Phoebe bought 2/3 of a yard of green ribbon and 1/3 of a yard white ribbon to use on her quilt. She decided to exchange 1/3 yard

Viefleur [7K]

She has no more white ribbon because she exchanged it for yellow.

4 0

4 years ago

The point (7, 4) lies on a circle centered at the origin. Write the equation of the circle and state the radius.

k0ka [10]

Given:

The point (7, 4) lies on a circle centered at the origin.

To find:

The equation of the circle and the radius of the circle.

Solution:

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The point (7, 4) lies on a circle centered at the origin. So, the distance between the points (7,4) and (0,0) is equal to the radius of the circle.

$r=\sqrt{(0-7)^2+(0-4)^2}$

$r=\sqrt{(-7)^2+(-4)^2}$

$r=\sqrt{49+16}$

$r=\sqrt{65}$

The standard form of the circle is

$(x-h)^2+(y-k)^2=r^2$ ...(i)

Where, (h,k) is the center of the circle and r is the radius of the circle.

Putting h=0, k=0 and $r=\sqrt{65}$ in (ii), we get

$(x-0)^2+(y-0)^2=(\sqrt{65})^2$

$x^2+y^2=65$

Therefore, the equation of the circle is $x^2+y^2=65$ and its radius is $r=\sqrt{65}$ .

7 0

3 years ago

mote1985 [20]

Step-by-step explanation:

4x + 12 = 8 ➡ 4x = 8-12 ➡ 4x = -4 ➡ x = -1

because a negative number divided by a positive number is equal to a negative number.

8 0

3 years ago

X - 7 greater than or equal to 12.8

vladimir1956 [14]

Im pretty sure is equal to 12.8

6 0

3 years ago

Read 2 more answers