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LekaFEV [45]
3 years ago
11

Why do we use variables, and what is the significance of using them in expressions and equations?

Mathematics
1 answer:
n200080 [17]3 years ago
7 0
A variable is the unknown amount ojj
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Factorise 25x+15 mate
Ivanshal [37]

Answer:

5(5x+3)

Step-by-step explanation:

25x=5*5x

15=5*3

5*5x+5*3

Factor out the Common 5

5(5x+3)

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3 years ago
Josh has 40 minutes to complete a government exam. There are 15 multiple-choice questions worth 3 points each. There are also 5
Sauron [17]
Since there is no graph presented, I will give an example. For instance you are given, 2n is greater than 30 and 5n is less than 100 and you are asked to find the value of n. This is an example of an inequality problem. You are given 2n is greater than 30 and 5n is less than 100. You are asked to find for the value of n. You need to know that greater means this sign ‘>’ and lesser means ‘<’ sign. So if you have 2n is greater than 30, this is equal to 2n>30 and 5n is less than 100 is 5n<100. The ‘and’ means equal sign ‘=’. So,

2n>30+5n<100

2n-5n

<span> </span>

8 0
3 years ago
Please help me ill mark you as brainiset
Artyom0805 [142]

Answer: -$560

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Plz mark me brainliest it would mean so much! :)

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3 years ago
8. A snail is traveling at a rate of 0.64 centimeters each second. How many centimeters will
netineya [11]

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2.61

Step-by-step explanation:

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3 years ago
Answer this question please :)
Aleonysh [2.5K]

Answer:

Step-by-step explanation:

9*7=63

63

triangle area=21

63+21=84

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3 years ago
Read 2 more answers
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