DZ 8th Grade Math Things

Going The Distance

100

What is the length of a line segment with endpoints at (1, 3) and (4, 3)?

3 Units.

200

What number must be subtracted from 7 to get -7?

14.

300

How many sides does a trapezoid have?

Four.

400

If there is a point on a graph at (-6,3) and another at (-2,-2), what is the length of that line?

_remember a²_+b² _=c²

The line is ≈6.4.

500

288 inches = ___ yards.

8 yards.

Formula Ones

100

Two in One.
What is the Pythagorean theorem formula? and what does PEMDAS stand for?

a²+b² =c²

P- Parentheses
E- Exponents
M- Multiplication
D- Division
A- Addition
S- Subtraction

200

What is the Simple Interest Rate formula?

I=Prt

300

What does Tr² stand for?

Trustworthiness, Responsibility, Respect

400

How do you find the Area of a Triangle?

A=¹/₂bh

500

What is the formula for Compound Interest? 

A = P(1+ r)^t

Simply Simple

100

What is the absolute value of

-|-45|?

-45

200

Arrange from Least to Greatest.

¹²/₃, 4.25, ⁶⁴/₃₂, -25

-25, ⁶⁴/₃₂, ¹²/_3, 4.25

300

Simplify the square root. 

-√ ¹²¹/₂₂₅

^-11/₁₅

400

Simplify the square root.

√9a⁴b²

3a²b

500

Simplify the square root. 

-√49a¹⁰b²⁰

-7a⁵b¹⁰

The X-Factor

100

What value of x makes "8 + x = 0.8" a true statement?

-7.2

200

What does x equal if x= (3a + b)/2c if
a = 3
b = 2
c = 5?

1.1

300

Solve for x.
7*(9-3)= x

x= 42

400

Solve for x.

x²-10x+25 =0

x= 5

500

Substitute and Find x.

2x+10 = 6x-10

A. x= 3
B. x= 10
C. x= 5
D. None of the Above. 

C. x= 5

⚠️Hard Questions⚠️

100

Two in One.

What side of the hallway should you ALWAYS walk on in the Halls? 

For safety reasons, what should you always have displayed on your person? 

Right Side.

Your Badge. 

200

The perimeter of a rectangle is 52 cm. If its width is 2 cm more than one-third of its length, find the dimensions of the rectangle.

(A) 12 cm and 4 cm

(B) 18 cm and 8 cm

(C) 15 cm and 9 cm

B. 18 cm and 8cm. 

300

What is DZ school's Colors? 

Blue and Gold

400

The volume of a right circular cylinder is 1100 cm³ and the radius of its base is 5 cm. Calculate its curved surface area.

(A) 410 cm²        (B) 125 cm²         
(C) 440 cm²

C. 440 cm²

500

In a group of 120 people, 90 have an age of more 30 years, and the others have an age of less than 20 years. If a person is selected at random from this group, what is the probability the person's age is less than 20?

Will take any of these answers...

Randomly choosing one
the probability is 1 in 4
0.25
25%.