3 years ago

What is the probability that you flip 4 coins and at least 2 land on tails?

Mathematics

1 answer:

Marianna [84]3 years ago

3 0

50%. Each coin has a 50% chance on landing on head and a 50% chance of landont on tails.

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The table shows the results of a survey on the number of text messages per month for people of different ages. Based on this sur

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Answer:C

Step-by-step explanation:I took the test got a

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3 years ago

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Janet and Kyle each purchase Blu Ray discs and Cd's from Amazon. Janet buys 3 Blu ray and 2 Cd's for $58. Kyle buys 1 Blu Ray an

polet [3.4K]

Answer:

y = 20 x = 6

Step-by-step explanation:

1 (3x+ 2y = 58 ------------> -3x + -2y = -58

1x + 2y = 46 --------------> 1x + 2y = 46

____________

-2x = -12

-----------------

-2x -2x

x = 6

3(6) + 2y = 58

18 + 2y = 58

-18 -18

------------------

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----- -----

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3 years ago

For which function is f(x) equal to f-1(x)?

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Let's solve for f.
y=f−1x
Step 1: Flip the equation.
f−x=y
Step 2: Add x to both sides.
f−x+x=y+x
f=x+y
Answer:
f=x+y

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3 years ago

Bob bought 24 hockey tickets for $83. Adult tickets cost $5.50 and child tickets cost $2.00. How many child tickets did he buy?

Digiron [165]

Answer:

14 kid tickets

10 adult tickets

Step-by-step explanation:

2.00*14=28

5.50*10=55

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3 years ago

Please help and solve; big points<br> 3/2 ∜(2(x-6)^3 )+4=16

daser333 [38]

Answer:

x ≈ 18.7

Step-by-step explanation:

This is a big equation, so let's break it down a bit.

$\frac{3}{2} \sqrt[4]{(2(x-6) ^3 )} +4=16$

Let's start by isolating the radical which is x.

So subtract 4 from both sides :

$\frac{3}{2} \sqrt[4]{(2(x-6) ^3)}$ $=12$

Now multiply both sides by 2 to get rid of the fraction :

$3\sqrt[4]{(2(x-6)^3)} = 24$

Now divide both sides by 3 to get rid of the number out of the poly root :

$\sqrt[4]{2(x-6) ^3}$ $=8$

Now take both sides of the equation to the power of 4 :

$2x^3 - 36x^2+216x-432=4096$

And lastly, solve :

$x = 18.69920$ which is rounded up to $x$ ≈ $18.7$

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3 years ago