Multiple Choice
Simplify. 5–1(3–2)
(1 point)
Responses
45
45
Image with alt text: 1 over 45
15–3
15 –3
152
15 2
Skip to navigation
The correct answer is 15 - 3.
2 of 102 of 10 Items
Question
Simplify mn-4/p⁰q-2 .
(1 point)
Responses
Image with alt text: Start Fraction lower m lower q squared over lower n superscript 4 baseline End Fraction
Image with alt text: Start Fraction lower m lower p over lower n superscript 4 baseline End Fraction
Image with alt text: lower m lower n superscript negative 4 baseline lower q squared lower p superscript 0 baseline
Image with alt text: Start Fraction lower q squared over lower m lower n superscript 4 baseline End Fraction
Skip to navigation
The correct answer is: Start Fraction lower m lower n superscript negative 4 baseline lower q squared lower p superscript 0 baseline
Write in scientific notation. 0.0042
(1 point)
Responses
42 × 10–2
42 × 10 –2
4.2 × 10–4
4.2 × 10 –4
4.2 × 10–3
4.2 × 10 –3
.42 × 10–4
.42 × 10 –4
Skip to navigation
The correct answer is: 4.2 × 10–3
Write in standard notation. 6.12 × 103
(1 point)
Responses
6,120
6,120
612
612
61,200
61,200
61.2
61.2
Skip to navigation
The correct answer is: 6,120
Simplify. Write in scientific notation. 0.5(8 × 105)
(1 point)
Responses
8 × 55
8 × 5 5
4 × 55
4 × 5 5
8 × 105
8 × 10 5
4 × 105
4 × 10 5
Skip to navigation
The correct answer is: 4 × 105
Simplify. Write in scientific notation. (9 × 10–3)2
(1 point)
Responses
8.1 × 10–5
8.1 × 10 –5
81 × 10–4
81 × 10 –4
81 × 10–3
81 × 10 –3
8.1 × 10–6
8.1 × 10 –6
Skip to navigation
The correct answer is: 8.1 × 10–6
7 of 107 of 10 Items
Question
Evaluate a–4b2 for a = –2 and b = 4.
(1 point)
Responses
2
2
Image with alt text: one half
3
3
4
4
Skip to navigation
To evaluate a–4b2 for a = –2 and b = 4, substitute the given values into the expression:
(–2)–4(4)2
=(-2)^-4 * 4^2
Now, simplify the expression step by step:
=(-1/2)^4 * 16
= (1/(2^4)) * 16
= (1/16) * 16
= 1
The correct answer is: 1