Q. If 10^(x) = 1000, what is the value of x? (2023)
Solution
Since 1000 can be expressed as 10^3, we have 10^x = 10^3, thus x = 3.
Correct Answer: B — 3
Learn More →
Q. If 10^(x+2) = 1000, what is the value of x? (2023)
Solution
Since 1000 can be expressed as 10^3, we have 10^(x+2) = 10^3, thus x + 2 = 3, leading to x = 1.
Correct Answer: A — 1
Learn More →
Q. If 4^(x-1) = 64, what is the value of x?
Solution
Since 64 can be expressed as 4^3, we have 4^(x-1) = 4^3, thus x - 1 = 3, leading to x = 4.
Correct Answer: B — 4
Learn More →
Q. If 7^(x) = 1/49, what is the value of x? (2023)
Solution
Since 1/49 can be expressed as 7^(-2), we have 7^x = 7^(-2), thus x = -2.
Correct Answer: A — -2
Learn More →
Q. If a^0 = 1 for any non-zero number a, which of the following statements is true?
-
A.
0 raised to any power is also 1.
-
B.
Any number raised to the power of zero is zero.
-
C.
Only positive numbers can be raised to the power of zero.
-
D.
The exponent zero indicates the multiplicative identity.
Solution
The exponent zero indicates the multiplicative identity, meaning any non-zero number raised to the power of zero equals one.
Correct Answer: D — The exponent zero indicates the multiplicative identity.
Learn More →
Q. If a^3 * a^(-2) = a^x, what is the value of x? (2023)
Solution
Using the property of exponents, a^3 * a^(-2) = a^(3 - 2) = a^1, hence x = 1.
Correct Answer: A — 1
Learn More →
Q. If a^3 * b^2 = 64 and a = 2, what is the value of b? (2023)
Solution
Substituting a = 2, we have 2^3 * b^2 = 64, which simplifies to 8b^2 = 64. Thus, b^2 = 8, leading to b = 4.
Correct Answer: B — 8
Learn More →
Q. If a^x = b^y and a = b, what can be inferred about x and y?
-
A.
x = y
-
B.
x > y
-
C.
x < y
-
D.
x and y are unrelated
Solution
If a = b, then a^x = b^y implies x must equal y for the equality to hold.
Correct Answer: A — x = y
Learn More →
Q. If x = 2^3 and y = 2^2, what is the value of x/y? (2023)
Solution
We have x = 8 and y = 4. Thus, x/y = 8/4 = 2.
Correct Answer: A — 2
Learn More →
Q. In a certain context, if the expression 5^(x+1) = 125 is true, what is the value of x?
Solution
Since 125 can be expressed as 5^3, we have 5^(x+1) = 5^3, thus x + 1 = 3, leading to x = 2.
Correct Answer: B — 2
Learn More →
Q. In the context of mathematical expressions, which of the following statements best describes the role of exponents?
-
A.
They indicate the number of times a base is multiplied by itself.
-
B.
They are used to denote the addition of two numbers.
-
C.
They represent the square root of a number.
-
D.
They are irrelevant in algebraic equations.
Solution
Exponents indicate how many times a base is multiplied by itself, which is fundamental in understanding powers in mathematics.
Correct Answer: A — They indicate the number of times a base is multiplied by itself.
Learn More →
Q. What is the simplified form of (2^3)^2? (2023)
-
A.
2^5
-
B.
2^6
-
C.
2^7
-
D.
2^8
Solution
Using the property of exponents (a^m)^n = a^(m*n), we have (2^3)^2 = 2^(3*2) = 2^6.
Correct Answer: B — 2^6
Learn More →
Q. What is the simplified form of (x^2 * y^3)^(2)? (2023)
-
A.
x^4 * y^6
-
B.
x^2 * y^3
-
C.
x^6 * y^4
-
D.
x^5 * y^3
Solution
Using the power of a product property, we have (x^2 * y^3)^(2) = x^(2*2) * y^(3*2) = x^4 * y^6.
Correct Answer: A — x^4 * y^6
Learn More →
Q. What is the value of (5^0 + 5^1 + 5^2)? (2023)
Solution
Calculating each term, we have 5^0 = 1, 5^1 = 5, and 5^2 = 25. Therefore, 1 + 5 + 25 = 31.
Correct Answer: C — 15
Learn More →
Q. What is the value of 5^(2) * 5^(3) / 5^(4)? (2023)
Solution
Using the property of exponents, we have 5^(2 + 3 - 4) = 5^1 = 5.
Correct Answer: A — 5
Learn More →
Q. Which of the following expressions is equivalent to 3^(2x) * 3^(x+1)?
-
A.
3^(3x + 1)
-
B.
3^(2x + x + 1)
-
C.
3^(x + 2)
-
D.
3^(2x + 1)
Solution
Using the property of exponents that states a^m * a^n = a^(m+n), we combine the exponents: 2x + (x + 1) = 3x + 1.
Correct Answer: A — 3^(3x + 1)
Learn More →
Q. Which of the following is the correct simplification of (x^3 * y^2)^(2)?
-
A.
x^6 * y^4
-
B.
x^5 * y^2
-
C.
x^3 * y^2
-
D.
x^2 * y^3
Solution
Using the power of a product property, (a*b)^n = a^n * b^n, we get (x^3)^2 * (y^2)^2 = x^6 * y^4.
Correct Answer: A — x^6 * y^4
Learn More →
Q. Which of the following is the result of simplifying (2^3)^2?
-
A.
2^5
-
B.
2^6
-
C.
2^7
-
D.
2^8
Solution
Using the power of a power property, (a^m)^n = a^(m*n), we get (2^3)^2 = 2^(3*2) = 2^6.
Correct Answer: B — 2^6
Learn More →
Q. Which of the following is true for the expression 2^(x+1) / 2^(x-1)? (2023)
-
A.
2^2
-
B.
2^0
-
C.
2^1
-
D.
2^3
Solution
Using the property of exponents, we have 2^(x+1 - (x-1)) = 2^(x+1-x+1) = 2^2.
Correct Answer: C — 2^1
Learn More →
Q. Which of the following is true for the expression 4^(x+1) = 16? (2023)
-
A.
x = 1
-
B.
x = 2
-
C.
x = 3
-
D.
x = 0
Solution
Since 16 can be expressed as 4^2, we have 4^(x+1) = 4^2, leading to x + 1 = 2, thus x = 1.
Correct Answer: A — x = 1
Learn More →
Q. Which of the following statements about exponents is incorrect?
-
A.
a^(m+n) = a^m * a^n
-
B.
a^(m-n) = a^m / a^n
-
C.
a^m * b^m = (ab)^m
-
D.
a^m + a^n = a^(m+n)
Solution
The statement a^m + a^n = a^(m+n) is incorrect; addition of exponents does not apply in this manner.
Correct Answer: D — a^m + a^n = a^(m+n)
Learn More →
Showing 1 to 21 of 21 (1 Pages)