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umka21 [38]
3 years ago
7

. You have a bag which contains 100 coins. 99 of these coins are normal and fair having the two sides head and tail. But, one co

in is fake and has two heads! You pick a coin randomly out of the bag without checking whether it is a normal coin or the fake one. Suppose that each coin is equally likely to be picked. You throw the picked coin n N times in a row (still without checking whether you have a regular coin or not) and observe the coin lands heads n times. What is the probability that you have picked the fake coin?
Mathematics
1 answer:
NikAS [45]3 years ago
3 0

Answer:I am not very sure but I think \frac{1}{51.5}

Step-by-step explanation:

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You are buying the new iphone 7 that originally costs $299. Verizon is running a sale that all phones are now 30% off. The sales
Dmitriy789 [7]

Answer:

$233.95

Step-by-step explanation:

299 x 0.7 = 209.30

209.30 x 1.07 = 233.95

5 0
3 years ago
Jacob earns $19.00 for walking 4 dogs. How much money would he earn for walking 7 dogs? Walking 8 dogs? 1 dog?
VMariaS [17]

Answer:

$19.00 = 4x

Divide 4 on both sides

4.75 = x He ears $4.75 for one dog

$4.75(x)

$4.75(7 dogs)

= $33.25

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

$4.75(x)

$4.75(8 dogs)

= $38

7 0
3 years ago
Please will give brainliest and thanks
il63 [147K]
X = 5 for the first one
7 0
3 years ago
5x+5y=-30 find the x and y intercept
Masja [62]

<em>The x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2 /><h2>Explanation:</h2>

The Standard Form of the equation of a line is given by:

Ax+By=C \\ \\ A,B,C \ Real \ Constants \ and \ A>0

So:

5x+5y=-30

is written in Standard Form. The x and y intercepts are:

x-intercept: \ (x,0) \\ \\ y-intercept: \ (0,y)

So:

FOR X-INTERCEPT:

Let's \ set: \\ y=0 \\ \\ 5x+5(0)=-30 \\ \\ Isolating \ x: \\ \\ 5x=-30 \\ \\ x=-\frac{30}{5} \\ \\ \boxed{x=-6}

FOR Y-INTERCEPT:

Let's \ set: \\ x=0 \\ \\ 5(0)+5y=-30 \\ \\ Isolating \ x: \\ \\ 5y=-30 \\ \\ y=-\frac{30}{5} \\ \\ \boxed{y=-6}

Finally,<em> the x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2>Learn more:</h2>

Parallel lines: brainly.com/question/12169569

#LearnWithBrainly

6 0
3 years ago
Find the permeter of a quadrilateral with vertices at C (2,4), D(1,1), E(5,0), and F(3,4). Round your answer to the nearest hund
denpristay [2]

Answer:

12.76

Step-by-step explanation:

This is much easier to solve if you draw it out on a graph. The perimeter is the sum of all the sides. I used the Pythagorean theorem to find the hypotenuse.

{a}^{2}  +  {b}^{2}  =  {c}^{2}  \\ c =  \sqrt{ {a}^{2} +  {b}^{2}  }

dc =  \sqrt{ {3}^{2}  +  {1}^{2} }  =  \sqrt{10}  \\  cf = 1 \\ fe =  \sqrt{ {4}^{2}  +  {2}^{2} }  =  \sqrt{20}  \\ de =  \sqrt{ {1}^{2} +  {4}^{2}  }  =  \sqrt{17}  \\  \sqrt{10}  + 1 +  \sqrt{20}  +  \sqrt{17}  = 12.76

7 0
3 years ago
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