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3 years ago

Toss a coin 5 times. what is the probability of getting exactly 2 tails

1 answer:

5 0

The total number of outcomes is (1/2)^5 dice each of the 5 coin tosses is an independent event. From the 5 possible tails, exactly 2 tails need to be selected. So the favored outcome is 5C2 = (5*4)/(1*2)= 10. The probability is 10/32 = 5/16.

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The force in Newtons acting on a particle located x meters from the origin is given by the function F(x)=12x2+7. What is the wor

Shkiper50 [21]

$W = \displaystyle \int^{5}_{2} F(x) ~ dx\\\\\\= \displaystyle \int^{5}_{2} \left(12x^2 +7\right) ~dx\\\\\\= 12\displaystyle \int^{5}_{2} x^2 ~dx + \displaystyle \int^{5}_{2} 7~ dx\\\\\\=12 \left[\dfrac{x^3}3 \right]^{5}_{2} + 7\left[x\right]^{5}_{2}\\\\\\=4(5^3-2^3) + 7(5-2) = 468 + 21 = 489~ J$

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2 years ago

ILL GIVE YOU BRAINLIST !! * have to get it right !!! * Find the slope of the line.

sveticcg [70]

Answer:

slope is 2

Step-by-step explanation:

Find two points that can be used.

(0,4) (2,8)

Use the slope formula and plug in the numbers

$\frac{y_{1}-y_{2} }{x_{1}-x_{2} }$

$\frac{8-4 }{2-0 }$

$\frac{4}{2}$

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3 years ago

for each of the following shapes, state whether or not it has reflection symmetry. if it does, draw the lines of symmetry it.

Genrish500 [490]

Answer:

Yes

Step-by-step explanation:

The lines of symmetry are the three altitudes.

6 0

2 years ago

How to do logarithmic equations

kaheart [24]

Answer:To solve a logarithmic equation, rewrite the equation in exponential form and solve for the variable. (it’s kind of the similar to regular equation)

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

The cost of a train ticket increases by

erastova [34]

It costs $122.4 dollars before the increase.

<h3>How to calculate percentage of a number. Use the percentage formula: P% * X = Y</h3>

Convert the problem to an equation using the percentage formula: P% * X = Y.

P is 17%, X is 7.20, so the equation is 17% * 7.20 = Y.

Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.

Therefore, It costs $122.4 dollars before the increase.

Learn more about Finding the Percentage here:

brainly.com/question/24862040

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2 years ago