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Questions (10)
What was the original mass of the Bismuth-212 sample if, after 121 seconds, it now weighs 2.64 grams, given that Bismuth-212 has
3 answers
166 views
The point (5, -3) is a solution to which system of equations?(1 point)
Responses
3 answers
53 views
Solve for z. z5+3=2 (1 point) Responses 5 5 −15 negative 1 fifth -5 -5 15
11 answers
67 views
Stacia wanted concert tickets that were selling for $36 each, and then she got a $19 discount. She paid a total of $53 for the
5 answers
91 views
Which statement is always true when nuclear fusion occurs?(1 point)
Responses The total number of protons and neutrons in each
9 answers
196 views
Does the line through (3, 7) and (-2, -5) intersect with the line through (4, 8) and (10, -2)?(1 point)
Responses You cannot tell
5 answers
80 views
Both of these tables represent linear graphs: Does the line through the first set of points intersect with the line through the
1 answer
152 views
The solution to a system of two linear equations is x = 3 weeks; y = 9 feet
Match the description with the correct statement. (3
17 answers
113 views
Judy has $100 and Elenore has $75. Judy is saving $5 per day and Elenore is saving $7 per day.
What equation represents how much
3 answers
103 views
Remember: You can use your graphing calculator!
The point (0,-2) is a solution to which system? (1 point) Responses -5x = y - 3
5 answers
66 views
Answers (28)
The chart displays the rate of radioactive decay for iodine-131. According to the graph, what is the period of half-life for iodine-131? (1 point) Responses 16 days 16 days 24 days 24 days 8 days 8 days 4 days
facts
then why did u say -1
- 1/5 ???
are u slow
out of 5 5 −15 negative 1 fifth -5 -5 15 which option is correct
are u sure
A window cleaner has enough supplies to clean 21 windows per office building on a certain number of buildings. They can also clean the windows of a school with 42 windows. Altogether, there are enough supplies to clean 126 windows. How many office
Niel has a bucket of beads. He uses them to make 8 identical necklaces and then buys 25 beads at the store. He ends up with a total of 500 beads. How many did he start with? Identify the operations needed to solve this problem using the equation b8 + 25 =
You weere wrong on 2 of them
A neutron strikes an atom of uranium-235 to start a fission reaction. A student expresses this situation as 01n+235 92U . Which statement describes why the expression is incorrect?(1 point) Responses A neutron should be expressed as 11H , not 01n . A
Which fact is true during a fission chain reaction?(1 point) Responses The total number of protons will decrease over time. The total number of protons will decrease over time. The number of freely-moving neutrons increases over time. The number of
Use the equation to answer the question. 21H+ 21H→ 42H+energy Which statement best describes the mass numbers of the atoms in the reaction? (1 point) Responses There are two atoms with mass numbers of 1. There are two atoms with mass numbers of 1. There
Which method of solving a system of linear equation do you prefer to use? Why do you find this particular method easier than the other two? (2 points) Answer both questions in ur own words
n amusement park that you are excited to try is $28 per visit. You have the option to purchase a monthly membership for $90 and then pay $15 for each visit. (4 points) Put responses in the correct input to answer the question. Select a response, navigate
so what is x
To solve this system, you could do the following steps: 3x+4y=48 6x+2y=60 (6 points) Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted
Solve the system of equations graphically. You can use your graphing calculator! y=−2x−1 3x − y =−7 (1 point) Responses Solution is (-1, -1) Solution is (-1, -1) Solution is (0, 2) Solution is (0, 2) Solution is (-1.5, 0) Solution is (-1.5, 0)
Jim bought some potted plants: Petunias cost $11 per pot and Begonias cost $15 per pot. Jim bought 19 potted plants in all and spent a total of $225 on the plants. Which would be a correct statement? (1 point) Responses Jim bought 15 petunias. Jim bought
is that all that apply?
Check all that apply. Select the statement(s) that correctly describes the solution to this system of equations: 8x−2y=−4 4x−y=−2 (2 points) Responses Solve this system by elimination since it is already in standard form and lined up nicely. Solve
You are running a concession stand at a baseball game. You are selling pizza slices and sodas. Each pizza slice sells for $3.50 and each soda sells for $1.50. At the end of the night, you made a total of $800. You sold a total of 344 pizza slices and sodas
How could you check to see if the point (5, 6) is the solution to the Linear System of equations?(1 point) Responses Substitute 6 in for x and 5 in for y in one of the equations to see if the equation is true. Substitute 6 in for x and 5 in for y in one of
what about"The solution to this system could possibly have this meaning."
Judy has $100 and Elenore has $75. Judy is saving $5 per day and Elenore is saving $7 per day. After the number of days it took both to have the same amount of money saved, how much money do they have each?
Judy has $100 and Elenore has $75. Judy is saving $5 per day and Elenore is saving $7 per day. (4 points) What equation represent how much money Judy will have in total after saving for d days? What equation represents how much money Elenore will have in
Match the system of equations to the number of solutions it has. You can use your Graphing Calculator! (4 points) Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses
Which term describes a brief reference in a text to a fictional or historical story, person, or event that readers will be familiar with?(1 point) Responses connection connection narrative narrative background background allusion
