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3 years ago

2 Select the correct answer. Simplify the following expression.

Mathematics

2 answers:

Jlenok [28]3 years ago

8 0

Answer:

I think the exact form is 1/64

sp2606 [1]3 years ago

5 0

Answer:

The answered would be 1/64 since it's simplified

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Need help parabola and its vertex

AVprozaik [17]

$y + 13 = 2(x - 1)^2$

use the equation: $(y_{2} - y_{1}) = m({x_{2} - x_{1})^2$

$(-11 + 13) = m(0 - 1)^2$

$2 = m(1)^2$

$m = 2$

$y + 13 = 2(x - 1)^2$

substitute y for 0, since x-intercepts occur on the x-axis, or the line y = 0

$0 + 13 = 2(x - 1)^2$

$13 = 2(x - 1)^2$

$13 = 2(x^2 - 2x + 1)[tex]\\[tex]13 = 2x^2 - 4x + 2$

$2x^2 - 4x - 15$

use the quadratic equation (can't type it out on brainly, if you don't know, look it up)

$x = 1 - \sqrt{ \frac{13}{2} }, 1 + \sqrt{ \frac{13}{2} }$

The answer is: $(1 - \sqrt{ \frac{13}{2} },0)$ and $(1 + \sqrt{ \frac{13}{2} },0)$

8 0

3 years ago

How do you compute the perimeter and area of a rectangle

erica [24]

Answer:

To find the perimeter- add up all the sides

To find the area- multiply length times width

Step-by-step explanation:

6 0

3 years ago

1+3x=-5+x<br><img src="https://tex.z-dn.net/?f=1%20%2B%203x%20%3D%20%20-%205%20%2Bx" id="TexFormula1" title="1 + 3x = - 5 +x" a

Oliga [24]

Get all your variables on same side and solve x=-2

4 0

3 years ago

brian has reduced his cholesterol level by 6% after his last check up. if his original level was 180,what is his approximate cho

Vitek1552 [10]

His cholesterol level should be 169.20

6 0

3 years ago

A cohort study of smoking and lung cancer was conducted in a small island population. There were a total of 1,000 people in the

Ierofanga [76]

Answer:

A measure of exposure-disease association one could use is the odds ratio (OR)

Step-by-step explanation:

An Odds ratio (OR) is a statistical measure quantifying the level of association between two events such as an exposure and an outcome

The odds ratio gives the probability of outcome where there is a given amount of exposure

We have the table;

$\begin{array}{ccc}&Developed \ lung \ cancer& Did \ not \ develop \ lung \ cancer\\Smokers&50&350\\Non-smokers&10&590\end{array}$

The odds ratio = (The number of smokers with the lung-cancer)/(The number of non-smokers with lung-cancer) ÷ (The number of smokers smokers without long cancer).(The number of non-smokers without long cancer)

∴ OR = (50/10) ÷ (350/590) = 59/7 = 8. $\overline{428571}$ ≈ 8.4

Therefore, a smoker is approximately 8.4 times more likely to develop lung cancer than a non-smoker.

6 0

3 years ago