Math 7 EXT Weekly Flashcardizz #18 2024-25

Front

What is the formula for calculating the surface area of a rectangular prism?

Back

The surface area (SA) of a rectangular prism is calculated using the formula: SA = 2lw + 2lh + 2wh, where l is the length, w is the width, and h is the height.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

How do you solve for x in the equation 140 = 6x + 20?

Back

To solve for x, first subtract 20 from both sides: 140 - 20 = 6x, which simplifies to 120 = 6x. Then, divide both sides by 6: x = 20.

Front

What is the first step to solve the equation 2x + 3(5x - 7) = 47?

Back

The first step is to distribute the 3: 2x + 15x - 21 = 47.

Front

What is the value of x in the equation 2x + 3(5x - 7) = 47?

Back

x = 4.

Front

What is the formula for the surface area of a cylinder?

Back

The surface area (SA) of a cylinder is calculated using the formula: SA = 2πr(h + r), where r is the radius and h is the height.

Front

What does it mean to isolate a variable in an equation?

Back

Isolating a variable means rearranging the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the relationship between supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

How do you find the surface area of a triangle?

Back

The surface area (A) of a triangle is calculated using the formula: A = 1/2 * base * height.