All categories

3 years ago

PLease help!!!! (pic below)

Mathematics

2 answers:

AleksAgata [21]3 years ago

8 0

Theoretically, the probability is 50%

tatyana61 [14]3 years ago

4 0

The possibility is 50%

You might be interested in

Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Marrrta [24]

Answer:

$\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Step-by-step explanation:

$\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine $\frac{1}{c} + \frac{1}{h}$

$\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine the bottom, too.

$=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}$

Apply the fraction rule

$=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}$

Cancel

$=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Therefore, $\frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

5 0

3 years ago

What is the equation of the parabola with focus (3, 0) and directrix x = –3?

nikitadnepr [17]

Answer:

x = $\frac{1}{12}$ y²

Step-by-step explanation:

Any point (x, y ) on the parabola is equidistant from the focus and the directrix

Using the distance formula, then

$\sqrt{(x-3)^2+(y-0)^2}$ = | x + 3 |

Squaring both sides

(x - 3)² + y² = (x + 3)² ← expanding both sides

x² - 6x + 9 + y² = x² + 6x + 9 ← subtract x² + 6x + 9 from both sides

- 12x + y² = 0 ( subtract y² from both sides )

- 12x = - y² ( divide both sides by - 12 )

x = $\frac{1}{12}$ y²

4 0

3 years ago

Read 2 more answers

Find the exact,simplified value of x for the given triangle

Katarina [22]

If this is a 30, 60, 90 triangle, which I think it is, it would b 4

4 0

3 years ago

Use the point-slope formula to write an equation of the line given the following information. Write the final answer in slope-

Ilya [14]

Answer:

y=-x-9

Step-by-step explanation:

3 0

2 years ago

Can someone please Compare and contrast a line graph to a pie graph and the first one to submit an answer gets brainiest

lara31 [8.8K]

Line graphs can be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time.

4 0

3 years ago