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Juli2301 [7.4K]
3 years ago
12

Explain why it does not matter what letter or symbols is use to find an unknown number

Mathematics
2 answers:
Alchen [17]3 years ago
5 0
Because you are trying to find the unknown number right?Well it could stand for anything like how many  kittens you could have that as an o as long as you know what you are looking for
sineoko [7]3 years ago
4 0
The letter or symbol expresses an unknown value. There is no value to a letter or symbol.

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Give two examples of addition of two mixed numbers with different denominators <br> SHOW ALL STEPS
Lady bird [3.3K]

Answer:

First Example: 3 1/2 + 4 3/4, Second Example: 6 3/8 + 7 9/15

Extra Example: 8 4/20 + 3 5/10

Step-by-step explanation:

First Example:

1/2 + 3/4

1/2 is equal to 2/4 so it is now compatible to be added to 3/4.

2/4 + 3/4

= 5/4

Now for the mixed numbers since its 3 and 4, 3 + 4 = 7.

Final answer is 7 5/4.

Second Example:

3/8 + 9/15

9/15 can be reduced to 3/5

Now the equation is 3/8 + 3/5

= 15/40 + 24/40 is an equivalent equation

15/40 + 24/40  

= 39/40

Now for the mixed numbers since its 6 and 7, 6 + 7 = 13

Final answer is 13 39/40.

I am going to include one last example just in case you need one:

Third Example:

4/20 + 5/10

We can reduce these to

1/5 + 1/2

= 2/10 + 5/10 is the equivalent equation

2/10 + 5/10

= 7/10

Now for the mixed numbers since its 8 and 3, 8 + 3 = 11.

Final answer is 11 7/10.

I Hope this helps!

6 0
3 years ago
At noodle &amp; company restaurant, the probability that a customer will order a nonalcoholic beverage is .46. Find the probabil
skelet666 [1.2K]

Answer:

0.0021

Step-by-step explanation:

Given:

Probability of ordering a nonalcoholic beverage is, P(N)=0.46

Number of samples are n=10

Now, the complement of event 'N' is not ordering a nonalcoholic beverage.

Therefore, P(\overline N)=1-P(N)=1-0.46=0.54

Now, for a sample of '10' customers, the probability of not ordering a non alcoholic beverage is product of their individual probabilities as all these events are independent events.

Therefore, probability that none of the 10 will order a nonalcoholic beverage is given as:

=[P(\overline N)]^{10}\\\\=(0.54)^{10}\\\\=0.0021

5 0
3 years ago
Jack practices his trumpet every 3days. he goes for a run every 4 days. if he did both today, in how many more days will he prac
LekaFEV [45]
7 because it is within a week according to my guest
8 0
3 years ago
How many meters tall is a door
S_A_V [24]

Answer: a standard door is about 2-2.10 meters

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Sarah drank 75% of a one-pint carton of milk at lunchtime. How many ounces of milk were left in the carton?
Ludmilka [50]

Answer:

16

Step-by-step explanation:

5 0
3 years ago
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