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2 years ago

13

In the coin flipping lab, suppose that you simulated the flipping of a weighted coin 30 times and got 5 heads and 25 tails. What

is your estimated probability for P(H)?

1 answer:

irinina [24]2 years ago

3 0

Answer:

1/6

Step-by-step explanation:

Out of 30 tosses, 5 come up heads. So the estimated probability of heads is 5/30, or 1/6.

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Ally sold 18 boxes of girl scout cookies. This was 40% of the number of boxes that Kayla sold. How many boxes did Kayla sell?

S_A_V [24]

Answer:

Kayla sold 90 boxes of cookies.

Step-by-step explanation:

let's have X be the number of boxes Kayla sold.

x⇒100%

18⇒20%

Find x,

x=100/20 × 18

x=90

6 0

3 years ago

In a bag of 12 marbles, there is 6 blue and 6 red. Paul randomly selects 4 blue marbles and marbles and does not put them back o

Blababa [14]

4/12 times 2/8=8/96(simplify 8/96)

7 0

3 years ago

Describe how to evaluate the expression 3^2 + (21 - 9) X 6÷2. Can someone help me out, please? I'm having trouble, and my teache

mylen [45]

Answer:

$3^2+\left(21-9\right)\times \:6\div \:2=45$

Step-by-step explanation:

Given the expression

$3^2\:+\:\left(21\:-\:9\right)\:\times \:6\div 2$

Follow the PEMDAS order of operations

$3^2\:+\:\left(21\:-\:9\right)\:\times \:6\div 2$

calculate within parentheses $\:(21-9)=12$

$=3^2+12\times \:6\div \:2$

calculate exponents $3^2=9$

$=9+12\times \:6\div \:2$

Multiply and divide (left to right)

$=9+36$

Add and subtract (left to right) $12\times \:\:6\div \:\:2=36$

$=45$

Thus,

$3^2+\left(21-9\right)\times \:6\div \:2=45$

8 0

3 years ago

What is the standard form of this expression?<br> (4y - 9/2y - 3)

shepuryov [24]

Answer:

-1/2y-3

Step-by-step explanation:

4y-9/2y-3

8/2y-9/2y-3

-1/2y-3

4 0

3 years ago

(32 +1) + (5 + 7z) = <br><br> Help please

levacccp [35]

Answer: -5.428

Step-by-step explanation:

33 + 5 + 7z = 0

38 + 7z = 0

7z = -38

z = -38/7

5 0

3 years ago