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How could you use the Commutative Property of Addition to rewrite the expression −21 + 7? A) −21(7) B) 3(−21) + 7 C) 7 + (−21) D) 3(−7) + 21
answered
Oct 18, 2021
Mathematics
middle-school
7
votes
128k
views
A flagpole, 12 m high, is supported by three wires attached from the top of the pole to the ground. Each wire is pegged into the ground 5 m from the pole. How much wires needed to supported the pole?
answered
Sep 15, 2021
Mathematics
middle-school
2
votes
55.7k
views
What is the slope of the line below? Be sure to scroll down first to see all answer options
answered
Jul 15, 2021
Mathematics
high-school
2
votes
121k
views
What is the square root of 153 divided by 13 plz help me fast
answered
Jul 8, 2021
Mathematics
college
2
votes
224k
views
Which of the following is an effect of acid rain? A. Plants absorb water more easily. B. Air quality decreases. C. Surfaces of buildings, statues, rocks, and leaves are damaged. D. Heat from the Sun is
answered
May 29, 2021
Geography
college
5
votes
233k
views
In order for a desired physiological change to occur, energy must be
answered
Mar 14, 2021
Health
high-school
2
votes
113k
views
has 12,200 shares of stock outstanding with a par value of $1 per share. The market value is $27.50 a share. The balance sheet shows $12,200 in the common stock account, $146,598 in the capital in excess
answered
Feb 28, 2021
Business
college
7
votes
18.8k
views
Read the excerpt from “Tools of the Spymaster." The numbers that Major Tallmadge assigned to members of the Culper Ring were from a secret writing system he invented. He substituted digits for words that
answered
Feb 17, 2021
English
middle-school
0
votes
71.9k
views
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. When he increases
answered
Dec 18, 2020
Physics
college
4
votes
193k
views
Which of the following solutions to the equation below x^2+4x-9=5x+3
answered
Oct 9, 2020
Mathematics
middle-school
6
votes
121k
views
7/8m + 9/10 - 2m - 3/5
answered
May 27, 2020
Mathematics
middle-school
3
votes
44.8k
views
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