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3 years ago

Someone pleaseee answer #2 #3 and #4 on lesson 7.9!

Mathematics

1 answer:

elixir [45]3 years ago

3 0

#2 will be 101

#3 6 1/6

#4 4 3/8

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A coin is tossed 40 times and shows heads 23 times. Calculate the experimental probability of the coin showing heads.

Over [174]

Answer:

0.575

Step-by-step explanation:

There are two types of probabilities:

1. Theoretical Probability

2. Experimental Probability

The probability based on mathematical theories is called theoretical probability. It is not always true. i.e. the probability of getting a head in a toss of coin is 1/2 or 0.5 or 50%

Experimental probability is based on experiments. Experimental probability is always going to change whenever the experiment is performed.

The theoretical probability of getting a head while tossing a coin will always be 50% while experimental probability might be different the next time, experiment is performed.

In this case, the experimental probability will be 23/40 or 0.575 ..

8 0

3 years ago

What is 3 2/5 minus 1 9/10

cestrela7 [59]

$3\frac{2}{5}=3\frac{2\cdot2}{5\cdot2}=3\frac{4}{10}=3.4\\\\1\frac{9}{10}=1.9\\\\3\frac{2}{5}-1\frac{9}{10}=3.4-1.9=\boxed{1.5}$

5 0

3 years ago

Read 2 more answers

In 2017, there were about 21 million teenagers (aged 13-17) in the United States. They each

vivado [14]

The Number of text messages sent in a month is 1.68 × $10^{(-8)}$

Step-by-step explanation:

Step 1 :

Total number of teenagers in United States = 21 million

Average text messages sent per month = 800

We need to find the number of text messages sent each month

Step 2 :

The number of text messages in a month can be computed by taking the product of the total number of teenagers and average messages sent per month

Therefore

Number of text messages that is sent in a month = 21 million × 800

= 21 × $10^{6}$ × 800

= 168 × $10^{6}$ = 1.68 × $10^{(-8)}$

Step 3 :

Answer :

The Number of text messages that is sent in a month is 1.68 × $10^{(-8)}$

5 0

3 years ago

Answer pls need for math tomorrow

IrinaVladis [17]

The correct answer is D

7 0

3 years ago

Which of the following is a

bazaltina [42]

B) Triangle

C) Rectangle

Step-by-step explanation:

A cross -section the intersection of a 3-dimensional figure and a plane.

A rectangular prism can form a cross-section of a rectangle or a cross-section of a triangle.

Learn More

Rectangular prism cross-sections : brainly.com/question/12619361

Keywords: possible, cross section, rectangular ,prism

#LearnwithBrainly

7 0

3 years ago