The result after adding a set of numbers or algebraic expressions is called a

sum

Step-by-step explanation:

An algebraic expression is basically a combination of variables, constants and arithmetic operations :

Constant is a quantity whose value remains fixed and whose value does not change . Constants are denoted by letters a , b , c ...

Variable is a quantity whose value may vary and does not remains constant.Variables are denoted by letters x , y, z, u ,v ...

Arithmetic operations are used to combine variables and constants .

For example :

Here, the result we obtained i.e 7x+y+z is called a sum .

The result after adding a set of numbers or algebraic expressions is called a sum

f(x)=2/3x+4/3 is the answer because is whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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