question What is the result of 15 23

In a rhombus, what is the measure of each angle?

A. 60∘60∘
B. 90∘90∘
C. 120∘120∘
D. 180∘180∘

Solve the equation: 3�−7=83y−7=8.

A. �=5y=5
B. �=6y=6
C. �=7y=7
D. �=8y=8

What is the area of a circle with a radius of 9 units?

A. 18�18π square units
B. 27�27π square units
C. 36�36π square units
D. 81�81π square units

What is the next number in the sequence: 3, 6, 12, 24, ...?

A. 36
B. 42
C. 48
D. 54

If a circle has an area of 25�25π square units, what is its radius?

A. 5 units
B. 7 units
C. 10 units
D. 25 units

What is the name of a polygon with nine sides?

A. Nonagon
B. Decagon
C. Octagon
D. Enneagon

What is the sum of the angles in an equilateral triangle?

A. 60∘60∘
B. 90∘90∘
C. 180∘180∘
D. 360∘360∘

What is the measure of each interior angle in a regular pentagon?

A. 60∘60∘
B. 90∘90∘
C. 108∘108∘
D. 120∘120∘

If �÷4=5b÷4=5, what is the value of �b?

A. 15
B. 16
C. 18
D. 20

What is the sum of the first 15 positive integers?

A. 90
B. 105
C. 120
D. 135