Math 7 EXT Weekly Flashcardizz #18 2024-25

Front

What is the equation used to find the value of x in the equation 140 = 6x + 20?

Back

The equation is 140 = 6x + 20.

Front

How do you solve for x in the equation -25 = \frac{(-2x + 8)}{4}?

Back

To solve for x, multiply both sides by 4: -100 = -2x + 8, then isolate x to find x = 54.

Front

What is the formula to find the area of a rectangle?

Back

Area = length × width.

Front

If a container has dimensions 11 ft, 3 ft, and 4 ft, how do you calculate the surface area to be painted?

Back

Surface area = 2(length × width + width × height + height × length) = 2(11×3 + 3×4 + 4×11) = 178 ft².

Front

What are supplementary angles?

Back

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

Front

If two angles are (3x)° and (10x - 15)°, how do you find their measures?

Back

Set up the equation: 3x + (10x - 15) = 180. Solve for x to find the angles.

Front

What is the value of x if 140 = 6x + 20?

Back

x = 20.

Front

How do you find the missing side length if the area is given?

Back

Use the area formula: Area = length × width, and solve for the missing side.

Front

What is the relationship between the sides of a right triangle?

Back

In a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides (Pythagorean theorem).

Front

What is the formula for the area of a triangle?

Back

Area = \frac{1}{2} × base × height.