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3 years ago

11

If there are 4 outcomes, what is the probability that I get tails then tails?

1 answer:

Murljashka [212]3 years ago

5 0

Answer:

50%

Step-by-step explanation:

because it is a two side coin

You might be interested in

Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers

lidiya [134]

Answer:

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

Step-by-step explanation:

We are given $x=\sqrt{3}-1$ and we are asked to find the value of $x^2-x+1$ .

So we will need to find $x^2$ .

$x=\sqrt{3}-1$

Square both sides:

$x^2=(\sqrt{3}-1)^2$

Expand using identity: $(x-a)^2=x^2-2ax+a^2$ .

$x^2=(\sqrt{3})^2-2(\sqrt{3})(1)+1^2$

$x^2=3-2\sqrt{3}+1$

$x^2=4-2\sqrt{3}$

Let's go back to the full $x^2-x+1$ .

$x^2-x+1$

$(4-2\sqrt{3})-(\sqrt{3}-1)+1$

$4-2\sqrt{3}-\sqrt{3}+1+1$

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

5 0

4 years ago

PLEASE ANSWER ASP

Korolek [52]

Answer:

9.55 in

Step-by-step explanation:

First of all we have to find the base area

base area = radius^2 x 3.14 = 10^2 x 3,14 = 100 x 3,14 =314 in^2

the volume of a cylinder is

V = base area x height

so the height is

V/base area

3000 : 314 = 9.55 in

3 0

3 years ago

Which expression is equivalent to 7^3⋅ 7^-5 as a fraction

Tatiana [17]

When you multiply a base with an exponent by a base with an exponent, you add the exponents together. (But you can only combine the exponents when the bases are the same)

For example:

$x^3(x^1)=x^{(3+1)}=x^4$ (they have the same base of x)

$y^3(x^2)=y^3x^2$ (you can't combine the exponents because they have different bases of y and x)

$2^2(2^1)=2^{(2+1)}=2^3=8$

When you have a negative exponent, you move the base with the negative exponent to the other side of the fraction to make the exponent positive.

For example:

$x^{-3}$ or $\frac{x^{-3}}{1} =\frac{1}{x^3}$

$\frac{1}{y^{-2}} =\frac{y^2}{1}$ or $y^{2}$

$7^3*7^{-5}$ Add the exponents together

$7^{(3+(-5))}$

$7^{-2}$ Make the exponent positive

$\frac{1}{7^2}$ Simplify

$\frac{1}{49}$

5 0

4 years ago

Please need help on this

emmainna [20.7K]

The answer is:
x = 1/11
y = 35/11

7 0

4 years ago

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. Type your answer i

leonid [27]

Answer:

10 - 3 =7

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers