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elena-s [515]
3 years ago
5

Please help with math

Mathematics
1 answer:
padilas [110]3 years ago
4 0
Algebra<span><span>Introduction to Algebra
</span>Variables<span> 
</span>Expressions<span> 
</span>Equations<span> 
</span>Solution of an equation<span> 
</span>Simplifying equations<span> 
</span>Combining like terms<span> 
</span>Simplifying with addition and subtraction<span> 
</span>Simplifying by multiplication<span> 
</span>Simplifying by division<span> 
</span>Word problems as equations<span> 
</span>Sequences VariablesA variable is a symbol that represents a number. Usually we use letters such as n, t, or x for variables. For example, we might say that s stands for the side-length of a square. We now treat s as if it were a number we could use. The perimeter of the square is given by 4 × s. The area of the square is given by s× s. When working with variables, it can be helpful to use a letter that will remind you of what the variable stands for: let n be the number of people in a movie theater; let t be the time it takes to travel somewhere; let d be the distance from my house to the park. ExpressionsAn expression is a mathematical statement that may use numbers, variables, or both.Example:The following are examples of expressions:2x3 + 72 × y + 52 + 6 × (4 - 2)z + 3 × (8 - z<span>)</span></span>
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1 in 4 families now owes money on a
Alecsey [184]

"a rise of a quarter from  last year" means the percentage went up by 25%

x = old value

x + 25% of x = x + 0.25x = 1.25x = new value = 0.25 since "1 in 4" means 1/4 = 0.25

So,

1.25x = 0.25

x = 0.25/1.25

x = 0.2

x = 2/10

x = 1/5

Answer:  The fraction of families that owed money is 1/5, or 1 in 5.

4 0
2 years ago
Find B U C.<br><br><br> I need help
ICE Princess25 [194]

Answer:

∪ means the whole numbers which is found in them

B and C have the numbers, 3,7, 6, 9, 2, 5

so, B∪C={2, 3, 5, 6, 7, 9)

Step-by-step explanation:

can i have brainliest if it helped : )

5 0
2 years ago
DUE SOON HELP ASAP!! NO NEED TO EXPLAIN JUTS NEED THE ANSWER
34kurt

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3 years ago
The measures of three line segments are given in each set.
kolezko [41]

Answer:

second option: 32.8 m, 48.2 m, 81.1 m  

Step-by-step explanation:

20.2 m + 20.4 m = 40.6 m.  which is bigger than 20.6 m. so yes  

32.8 m + 48.2 m = 81 m.  which is smaller than 81.1 m. so no  

12.8 m + 25.7 m = 38.5 m. which is bigger than 35.9 m. so yes  

35.6 m + 49.9 m = 85.5 m. which is bigger than 83.2 m. so yes

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If Bob paid $41.44 for 14 gallons what is the price of gas per gallon
Dmitry [639]
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