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postnew [5]
3 years ago
13

Analyze the table representing five experiments with an increasing number of trials. The table shows the frequency of a coin lan

ding heads up or tails up.
A 4-column table with 5 rows. Column 1 is labeled Experiment with entries 1, 2, 3, 4, 5. Column 2 is labeled Trials with entries 20, 40, 60, 80, 100. Column 3 is labeled Heads with entries 12, 25, 20, 35, 48. Column 4 is labeled Tails with entries 8, 15, 40, 45, 52.

What can you predict regarding the probability of the coin landing heads up?
A. The frequency does not change with more trials.
B. The experimental probability increases with more trials.
C. With more trials, the frequency of heads up will equal the frequency of tails up.
D. The frequency of heads up decreases with more trials.
Mathematics
2 answers:
sertanlavr [38]3 years ago
3 0

Answer:

C. With more trials, the frequency of heads up will equal the frequency of tails up.

Step-by-step explanation:

just took the test on edge

max2010maxim [7]3 years ago
3 0

Answer:

C

Step-by-step explanation:

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</span>

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8 0
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Eliza started the week with $274 in her bank account. This week she babysat for 16 hours and made $144.25. Eliza then went to th
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Hi. I hope this helps!

I believe the answer is 330.26 left.

1. First you add 274 and 144.25

You get 388.25

2. The. You subtract the amount of the video game from 388.25

You get 330.26

I hope this helps! Have a great day!
4 0
3 years ago
What’s 15x - 25 + 2 = 22 (with steps)
cupoosta [38]

Answer: x= 3

Step-by-step explanation:

15x-25+2=22

15x-25=25

15x=50

x=3.333333

x=3

6 0
2 years ago
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What number should be added to this expression to change it into a perfect square trinomial?
Licemer1 [7]
C. 4 because 4 is a perfect square, as well as x^2 and 4x


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3 0
3 years ago
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One of the legs of a right triangle measures 9 cm and the other leg measures 11 cm.
ikadub [295]

Answer:

\boxed {\boxed {\sf 14.2 \ cm}}

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean Theorem to solve for the sides.

a^2+b^2=c^2

where <em>a</em> and<em> b</em> are the legs and <em>c</em> is the hypotenuse. In this triangle, we know the legs are 9 centimeters and 11 centimeters, or:

  • a= 9 cm
  • b= 11 cm

Substitute these values into the formula.

(9 \ cm)^{2}  +(11 \ cm)^{2} =c^{2}

Solve the exponents.

  • (9 cm)²= 9 cm*9 cm=81 cm²

81 \ cm^{2}  +(11 \ cm)^{2} =c^{2}

  • (11 cm)²= 11 cm*11 cm= 121 cm²

81 \ cm^{2}  +121 cm^{2} =c^{2}

Add the values on the left side.

202 \ cm^{2} =c^{2}

Since we are solving for c, we must isolate the variable. It is being squared and the inverse of a square is the square root. Take the square root of both sides.

\sqrt {202 \ cm^{2} }=\sqrt{c^{2} }

\sqrt {202 \ cm^{2} }=c

14.2126704036 \ cm =c

We are told to round to the nearest tenth.

  • 14.2<u>1</u>26704036

The 1 in the hundredth place tells us to leave the 2 in the tenth place.

14.2 \ cm= c

The hypotenuse is equal to <u>14.2 centimeters.</u>

3 0
3 years ago
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