Help: All triangle have angles that add up to 180, for isosceles triangles 2 of the angles are the same 1 is different. You need to know at least 1 angle. A = Angle.
A times 2 - 180 = x
Two angles are the same 1 is gotten from the equation
18.
8 divided by 4/9 is 18.
Work: ( / = divided symbol )
8 / 4/9
8/1 • 9/4 = 18
Answer:
63.75
Step-by-step explanation:
i needed points
Answer:
A mathematical equation or phrase that includes numbers, variables, and operators.
Step-by-step explanation:
Examples of numbers: 1, 5, 60, 100
Examples of variables: a, x, y
Examples of operators, +, -, x, /
Any mathematical equation with all 3 of the given examples is called an algebraic expression.
For example:
1 + 21 is not an algebraic expression, because although it has both numbers and operators, it does not have a variable.
x + 2 is an algebraic expression, because it has all 3 of the components listed above.
Hope I helped :)
Answer:
C = 35x pence
Step-by-step explanation:
1 pen costs 15 , thus x will cost 15x
1 ruler costs 20, thus x will cost 20x
Total cost (C) will then be
C = 15x + 20x = 35x pence