Question 1

Which of the following is the domain of the function f(x)= x-8? (easy)

Accepted Answer

set of real number

Answer

( -∞, 8 )

Answer

( -∞,-8 )

Answer

[ -8, +∞ )

Question 2

​What is the subset of { h, o, s, p, i, t, a, l }? (Easy)

Accepted Answer

​{ o, s, p, i }

Answer

​{ 3, 5 }

Answer

​{ 8 }

Answer

​{ e, r }

Question 3

​Which system of units uses feet as a measure for length? (easy)

Accepted Answer

​english system

Answer

​metric system

Answer

​american system of measurement

Answer

​international system of units

Question 4

​This is the first system that uses kilogram as the standard unit for mass.(easy)

Accepted Answer

​metric system

Answer

​american system of measurement

Answer

​international system of units

Answer

​english system

Question 5

This is the base of a radical or any integer enclosed in a radical sign. (easy)

Accepted Answer

radicand

Answer

square root

Answer

index

Answer

polynomial

Question 6

​Which of the following algebraic expressions represents the phrase "twice the sum of two numbers"? (easy)

Accepted Answer

​2 ( x+y )

Answer

​2xy

Answer

​2x + y

Answer

​2 + x + y

Question 7

This is a collection of objects having a similar characteristic and is given a specific name.(easy)

Accepted Answer

sets

Answer

universal sets

Answer

null set

Answer

subsets

Question 8

It is created from vibrating source. (easy)

Accepted Answer

Longitudinal wave

Answer

Sound

Answer

Waves

Answer

Frequency

Question 9

It is the process of transferring energy through electromagnetic waves. (easy)

Accepted Answer

radiation

Answer

convection

Answer

conductor

Answer

electromagnetic wave

Question 10

It is used to measure loudness. (easy)

Accepted Answer

decibel

Answer

amphere

Answer

Photometry

Answer

kelvin

Question 11

Fahrenheit,  Celsius, and Kelvin are used to measure ___________. (average)

Accepted Answer

temperature

Answer

electromagnetic

Answer

kinetic energy

Answer

wave

Question 12

​Which of the following sets is represented by the A = { x|x is an even number and 20<x<30 }? (average)

Accepted Answer

A={22,24,26,28}

Answer

​A={6,12,18}

Answer

​A={3,6,9,12}

Answer

​A={10,11,12,13}

Question 13

What is the product of (5x+y) and (2x+y-1)​? (average)

Accepted Answer

​10x^2+7y-5x+y^2-y

Answer

​10x^2+3xy-5x+y^2-y

Answer

​10x^2-3xy+5x+y^2+y

Answer

10x^2-3xy+5x-y^2-y

Question 14

​Which property of multiplication is illustrated in 45 × (32+51)=(45 × 32)+(45 × 51)​? (average)

Accepted Answer

​Distributive

Answer

​Commutative

Answer

​Identity

Answer

​Inverse

Question 15

​Which property of addition illustrated in 32a+65+(-65)=14b+(-65)​? (average)

Accepted Answer

​Inverse

Answer

​Associative

Answer

​Identity

Answer

​Commutative

Question 16

​Which of the following is greater than 70 kg?(average)

Accepted Answer

​180 lbs

Answer

​140 lbs

Answer

​150 lbs

Answer

​160 lbs

Question 17

​The expression 3x^2+2y is equal to what real number when x=1 and y=3? (average)

Accepted Answer

​9

Answer

​5

Answer

​29

Answer

​12

Question 18

What is not the characteristics of an inconsistent system of linear equations? (average)

Accepted Answer

They intersect at a common point.

Answer

Their y-intercepts are unequal.

Answer

Their graphs are parallel lines.

Answer

Their slopes are equal.

Question 19

The first part of the law of acceleration tells you the greater the unbalanced force, the greater the acceleration of the body being acted upon it. If force F1, is applied to a body at one time and a force F2 at another time, then if you push on a car with a certain force F1 and at another time push it twice as hard, it will have acceleration twice that as the first. (average)

Accepted Answer

true

Answer

false

Question 20

The greater the mass of the body , the greater is its inertia. The greater the inertia, the harder it is to change the state of motion of that body. (average)

Accepted Answer

true

Answer

false

Question 21

Bone density measurements are normally done to evaluate an individual’s risk for fracture or osteoporosis. One way to do this is to measure the speed of sound in the bone. Find the speed of sound in a bone whose density is 2000 kg/m³ and whose young modulus is 1.6 x 1010 N/m² . (difficult)

Accepted Answer

2.8 x 10³ m/s

Answer

1.8x10³ m/s

Answer

5.8x10⁵ m/s

Answer

3.8x10³ m/s

Question 22

Mye has a mass of 100kg on Earth. What is her weight on the moon where the acceleration due to gravity is 1/6 that of Earth? (difficult)

Accepted Answer

W= 163 N

Answer

W=156 N

Answer

W=161 N

Answer

W=143 N

Question 23

What is the complete factor form of 10x² - 26x + 12? ((difficult)

Accepted Answer

(5x-3) (2x-4)

Answer

(5x+6) (2x-4)

Answer

(5x-2) (2x-4)

Answer

(5x-3) (2x+8)

Question 24

Which of the following rational expression is the product of 3x-6/x and x³/9x-18? (difficult)

Accepted Answer

x2/3

Answer

x/2

Answer

x³(x-6)/3x-6

Answer

(x-2)/x-3

Question 25

When doing chin-ups, a physicsstudent lifts her 42.0 kg body, a distance of 0.25 meter in 2.0 seconds. Whatis the power delivered by the student’s biceps? (difficult)

Accepted Answer

102.9 J

Answer

130.9 J

Answer

19.9 J

Answer

111.9 J

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