So, we know he submitted 3 already, and his teacher said that is 20%, let's say "x" is the 100%.
Answer:
The value of x is 75
Step-by-step explanation:
First we need to find the other angle that doesn't have a number in it.
To find the degrees of the other angle we subtract 155 from 180.
180 - 155 = 25
Now we have to find the value of x. Add 80 and 25 together to get 105. A triangle is going to be 180 degrees. Subtract 105 from 180.
180 - 105 = 75
Now we will add 80, 25, and 75 to check our work.
80+25+75 = 180
Step-by-step explanation:
the product = 4× c
= 4c
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Line up the decimal point to each number in order from left to right and subtract to get the difference which should be -0.248
