Pre algebra

pre algebra test

what is the formula of the pythagorean theorem

The formula of the Pythagorean Theorem is a² + b² = c², where a and b are the lengths of the two legs of a right triangle and c is the length of the hypotenuse.

what is the formula of calculating the area of a circle?

The formula for calculating the area of a circle is A = πr², where A represents the area and r is the radius of the circle.

what is the formula of circumference of a circle?

of a circle? The formula for calculating the circumference of a circle is C = 2πr, where C represents the circumference and r is the radius of the circle.

what is the formula of calculating the area of a rectangle?

The formula for calculating the area of a rectangle is A = length × width, where A represents the area.

What is the formula of calculating the area of a square?

The formula for calculating the area of a square is A = S², where A represents the area and S is the length of one side of the square \n\n.

What is the formula of calculating the area of a triangle?

The formula of calculating the area of a triangle is BH/2 (base x Height divided by 2).

What is the rule for the Commutative property of addition?

The rule for the Commutative Property of addition is “Changing the order of addends doesn’t change the sum” That means that if you add 5 + 3, it’s the same as 3 + 5.

what is something that is important to remember while solving one- step equations?

Something to remember while solving one- step equations is "do the opposite (inverse) operation of whatever is being done to the variable in order to get variable by .”

what is the rule for solving the identity property of addition?

The rule for solving the identity property of addition is “ Any number plus (+) O will equal that number by itself”

what is the rule for solving equations with variables on both sides?

The rule for solving equations with variables on both sides is “Get the variable on one side of the equation and solve”.

what do you to when solving proportions?

what you do when your solving proportions is cross multiply and solve your equation .

what is the difference between expressions and equations?

The difference between expressions and equations is that expressions have math phrase, no equal sign, variable can change. Meanwhile, Equations have math sentence, has equal sign, variable has answer.

how to solve multiplacation and division one-step equations?

To solve multiplacation and division one-step equations, You have to Isolate the variable (get it by itself) by using the inverse operation. Remember, BALANCE.

what is a constant?

A constant is a fixed value that never changes.

what is a coefficient?

A coefficient is a number that is before a variable or term.

what are the signs used in basic inequalities?

The signs that are used in basic inequalities are

≠ is not equal to

> is greater than

< is less than

≥ is greater than or equal to

≤ is less than or equal to.

how to get the original price?

To get the original price, You need to get the original price x (100% - discount%) Think, the sale price is what % of the original.

how to convert fractions into percents?

To convert fractions into percents,

1) Divide the numerator by the denominator.

2) Multiply by 100 (aka, move the decimal twice to the right)

What is a ratio

A ratio is a comparison of two (2) quantities by division, Often expressed as “a to b” or a:b.

what is the formula for solving Slope - intercept form?

The formula for solving Slope - intercept form is Y=mx+b. M means the slope. B means the y intercept.

What does the commutative property of multiplication state?

It states that changing the order of factors doesn’t change the product.

axb=bxa

what does the Commutative property of addition state?

It states that changing the order of addends doesn’t change the sum.

a+b=b+a

what is the rule for solving The Identity property of addition?

The rule for solving the Identity property of addition is that any number plus (+) will equal that number by itself.

a+0=a

What is the rule for solving the Inverse property of addition?

The rule for solving the Inverse property of addition is any number plus it’s additive inverse will equal 0

a+(a)=0

What is the rule for solving the Associative property of addition.

The rule for solving the Associative Property of addition is changing the groupings of addends doesn’t change the sum.

(a+b)+c=a (b+c)

what is the rule for solving the Associative property of multiplication?

The rule for solving The associative property of multiplication is changing the groupings doesn’t change the product.

(axb)xc= a x(bxc)

what is the rule for solving the Identity of property of multiplication?

The rule for solving the identity of property of multiplication is any number times (x) 1 will equal that number itself.

What is the rule for the inverse property of multiplication?

The rule for the inverse property of multiplications is any umber multiplied by it’s multiplicative inverse will equal 1.