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Vladimir79 [104]
3 years ago
7

What is 3x + 4 = x + 8

Mathematics
2 answers:
lapo4ka [179]3 years ago
5 0

Answer:

x = 2

Step-by-step explanation:

First you must subtract x to both sides leaving you with 2x + 4=8 and you subtract 4 to both sides giving you 2x=4 and lastly to get the x by itself you divide both sides by 2 leaving you with x=2

xxMikexx [17]3 years ago
4 0

Answer:

x is equal to 2

Step-by-step explanation:

2x+4=8

2x=4

x=2

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Flip a coin 10 times and record the observed number of heads and tails. For example, with 10 flips one might get 6 heads and 4 t
zepelin [54]

Answer:

The greater the sample size the better is the estimation. A large sample leads to a more accurate result.

Step-by-step explanation:

Consider the table representing the number of heads and tails for all the number of tosses:

Number of tosses    n (HEADS)        n (TAILS)            Ratio

            10                         3                      7                    3 : 7

           30                         14                    16                   7 : 8

          100                        60                   40                  3 : 2

Compute probability of heads for the tosses as follows:

  • n = 10 tosses

        P(\text{HEADS})=\frac{3}{10}=0.30

The probability of heads in case of 10 tosses of a coin is -0.20 away from 50/50.

  • n = 30 tosses

        P(\text{HEADS})=\frac{14}{30}=0.467

The probability of heads in case of 30 tosses of a coin is -0.033 away from 50/50.

  • n = 100 tosses

        P(\text{HEADS})=\frac{60}{100}=0.60

The probability of heads in case of 100 tosses of a coin is 0.10 away from 50/50.

As it can be seen from the above explanation, that as the sample size is increasing the distance between the expected and observed proportion is decreasing.

This happens because, the greater the sample size the better is the estimation. A large sample leads to a more accurate result.

5 0
3 years ago
HELP PLS! It’s question 15
vredina [299]

Answer:

A: C = 15N

Step-by-step explanation:

30/2 = 15 (the cost of 1 class)

7 0
2 years ago
Answer please i need help
Sauron [17]

Answer:

oh my god

Step-by-step explanation:

why is your image blockedddd

6 0
3 years ago
A plumber had a pipe that was 2 yards long he cut 18 inches off the end of the pipe
balandron [24]
To convert yards to feet, you would multiply it by 3. So, since there the pipe is 2 yards long, you could multiply 2*3 to get 6 feet. Then you can convert feet to inches by multiplying it by 12. 6*12 is equal to 72, so 2 yards is equal to 72 inches. Lastly, you can subtract 18 from 72, to get 54, and 54 inches would be your final answer.
7 0
3 years ago
(r/s)(3) = ?<br><br> please help.
MissTica

Answer:

\frac{3r}{s}

4 0
3 years ago
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