Which statement about equations and expressions is true?
1 answer:
Answer:
Option D. An example of an expression is z/365 because it is a mathematical phrase represented by numbers, a variable, and an operation.
Step-by-step explanation:
Expression:
- An expression is a mathematical phrase that consist of numbers, decimals, fractions, variables, sets, matrices.
- An expression does not have any relation symbol.
Equation:
- An equation is formed when there is any relation between any two expressions.
- The relation may be of equality, inequality r not equal.
This is an example of expression as it consist of a variable z and a number 365 in the form of fraction.
Option D) is the true statement about equation and expression.
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28 is 35% of 80
Convert the percentage (35) into a decimal by dividing it over 100:
Divide 28 over 0.35:
Convert the percentage (35) into a decimal by dividing it over 100:
Divide 28 over 0.35:
See the picture attached to better understand the problem
we know that
<span>the bridge is 10 ft tall and 27 ft long, horizontally
so
BC=10 ft
DE=27 ft---------> DC=27/2----> 13.5 ft
DA=r (radius of the circle)
AC=r-10
Applying the Pythagoras Theorem
DA</span>²=DC²+AC²<span> ------> r</span>²=13.5²+(r-10)²----> r²=182.25+r²-20r+100
20r=282.25--------> r=14.11 ft
the answer is
r=14.11 ft
we know that
<span>the bridge is 10 ft tall and 27 ft long, horizontally
so
BC=10 ft
DE=27 ft---------> DC=27/2----> 13.5 ft
DA=r (radius of the circle)
AC=r-10
Applying the Pythagoras Theorem
DA</span>²=DC²+AC²<span> ------> r</span>²=13.5²+(r-10)²----> r²=182.25+r²-20r+100
20r=282.25--------> r=14.11 ft
the answer is
r=14.11 ft