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icang [17]
3 years ago
11

Write an expression for the calculation double 7, multiply 3 and 1, and then subtract the second number from the first number

Mathematics
1 answer:
damaskus [11]3 years ago
6 0
7+7=14 3×1=3 3-7=4 Your answer is 4
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Help me please I need an an answer asap
storchak [24]
5A + 7 = 3A + 7 + 2A
We need to solve for A.

3A + 7 + 2A = 3A + 2A + 7 = 5A + 7 (We can add 3A and 2A because it's the same variable, so we add the coefficients)

5A + 7 = 3A + 7 + 2A
5A + 7 = 5A + 7

5A + 7 is always equal to 5A + 7 because it's the same equation. So the equation got infinitely many solutions.
4 0
2 years ago
You roll an eight-sided die. What is the chance that it will land on either a 2 or a 5? Write your answer as a fraction.​
AleksAgata [21]

Answer:

2/8 and the simplified version is 1/4

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
PLEASE HELP PLEASE (dont do links)
miss Akunina [59]

Answer:

B

-2(0)²+24(0)-54

= -54

5 0
3 years ago
Read 2 more answers
Data will be collected on the following variables. Which variable can be considered discrete? A. The height of a person B . The
kvv77 [185]

Answer: E: The number of books a person finished reading last month

Step-by-step explanation:

First, a discrete variable is a variable that only can take some given values in a set, the discrete variables are usually not dense, and a continuous variable is a variable that can take any value in a range (where the accepted values are dense).

So, for example, the set of the natural numbers is discrete, and the set of the real numbers can represent a continuous variable.

Here the only option that is really discrete will be the number of books that a person finished reading last month because here only positive whole numbers are accepted (you can not finish a 0.454 of a book)

The other options are continuous because all are classical measures.

For example, the weight of a person can jump between:

75.6kg and 75.7kg.

So you could think that this is discrete because the values between 75.6kg and 75.7g are not shown with our measuring device, but those will be added in the error of the measure because the weights between 75.6kg and 75.7kg are actually possible, so they must be accepted.

4 0
3 years ago
What is the least common denominator of the four fractions listed below 20 7/10, 20 3/4, 18 9/10, 20 18/25
Feliz [49]
So what you do is see all the denomenators and factor them (denomenaotrs are the bottom numbres)

10,4,10,25
10=2 times 5
4=2 times 2
10=2 times 5
25=5 times 5
we need to include all of them so we need at leas two 2's, and two 5's
2 times 2 times 5 times 5=100
leact common denomator is 100
7 0
3 years ago
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