Answers by visitors named: I Like Fighting Babies
How many solutions does the system of equations have? 8x−6y=48 8x+6y=48 (1 point) Responses one one two two none none infinite
1 year ago
Solve the system of two equations using elimination with multiplication. 4x−6y=−48 −2x+4y=30 (1 point) Responses (3, 9) left parenthesis 3 comma 9 right parenthesis (−21,−6) left parenthesis negative 21 comma negative 6 right parenthesis (−33,−9) left par...
1 year ago
Solve the system of equations. 3x−4y=40 5x−5y=55 (1 point) Responses (8,−3) left parenthesis 8 comma negative 3 right parenthesis (14, 3) left parenthesis 14 comma 3 right parenthesis (4,−7) left parenthesis 4 comma negative 7 right parenthesis (18, 7)
1 year ago
How many solutions does the system have? 12x−15y=18 4x−5y=6 (1 point) Responses infinitely many solutions infinitely many solutions one solution one solution two solutions two solutions no solution
1 year ago
The senior class at Hartford High School is planning their prom. They’ve narrowed the location down to two choices. The Regal Hotel charges, C , $500 for the ballroom rental fee and $75 per student, s , for the meal. The Greenhill Country Club charges, C...
1 year ago
Solve this real-world problem using a system of equations. The O’Donnells are having a birthday party for their son, and they plan to have a clown bring balloons to the party. Balloon Express charges $2 per balloon and $10 for delivery. Balloon Mania char...
1 year ago
The Spanish Club at Santa Fe Middle School wants to sell mini quiches to raise money for a field trip. The culinary department at their school will make the quiches for $30 plus $0.50 per quiche for the ingredients. The Spanish Club wants to sell each qui...
1 year ago
You are trying to guess the code to a puzzle while participating in an escape room. There are two buttons, blue and red, and you have to put the correct number in each one to unlock the door to the next room. There are only two clues to help you: Clue 1:...
1 year ago
Use the chemical reaction to answer the question. CaCO3→CO2+CaO A scientist heats 30 grams of calcium carbonate ( CaCO3 ) in the chemical reaction shown. What is the total mass of the products? (1 point) Responses 30 grams 30 grams 10 grams 10 grams 60...
1 year ago
Use the chemical reaction to answer the question. 4Fe+3O2→2Fe2O3 What happens to atoms of Fe and O2 during the reaction? (1 point) Responses They are lost. They are lost. They are rearranged. They are rearranged. They maintain their properties. They mai...
1 year ago
Use the chemical reaction to answer the question. 2H2+O2→2H2O There are four atoms of hydrogen ( H ) before the reaction. How many atoms of hydrogen are present after the reaction? (1 point) Responses 5 5 8 8 2 2 4
1 year ago
Hey bit I have a portfolio to do and I don't know what I'm doing so can you help me?? The subject is "Matter Interactions physical science" do u think you can help me?? I really need your help!!🤷
1 year ago
Ok but what matter should I make this about??
1 year ago
I think Chemical Reaction is a good one. Can you help me with it pls??
1 year ago
Signs of a chemical reaction:
1 year ago
Thank you bot for helping me!!🥰
1 year ago
Thank you bot for helping me!!🥰
1 year ago
Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point) Responses Find the mass of an acid and a base. Combine them to produce water and a salt. Find the mass of the water and salt. Find the mas...
11 months ago
What is always true according to the Law of Conservation of Matter?(1 point) Responses The total number of molecules before and after a chemical reaction stays the same. The total number of molecules before and after a chemical reaction stays the same. Ne...
11 months ago
A student combines two liquids in a beaker. She observes that the mass of the combined liquid is less than the mass of the two separate liquids. The student claims that this observation shows that matter is not conserved in chemical reactions. Which state...
11 months ago
In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products?(1 point) Responses CH4 + O2 → CO2 + 2H2O CH 4 + O 2 → CO 2 + 2H 2 O Zn + 2HCl → H2 + ZnCl2 Zn + 2HCl → H 2 + ZnCl 2 CO2 + H2O → CH2OH + O2...
11 months ago
true regarding a cheWhich statement ismical reaction?(1 point) Responses The total number of atoms does not change, so mass is conserved in the reaction. The total number of atoms does not change, so mass is conserved in the reaction. The total number of...
11 months ago
In a chemical reaction, two molecules with a total mass of 76 amu react to form a single molecule. What is the mass of the molecule that is formed?(1 point) Responses 76 amu 76 amu 38 amu 38 amu 228 amu 228 amu 152 amu
11 months ago
Which statement about an atom is correct?(1 point) Responses The electron has a negative charge and is found outside of the nucleus. The electron has a negative charge and is found outside of the nucleus. The neutron has no charge and is found outside of...
11 months ago
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point) Responses The model should show 27 protons and 32 neutrons. The model should show 27 proton...
11 months ago
Question In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide is correct?(1 point) Responses A molecular model of lithium sulfide would have two spheres. A molecular model of lithiu...
11 months ago
Use the periodic table to answer the question. Which element has the same number of valence electrons as bromine (Br)? (1 point) Responses krypton (Kr) krypton (Kr) chlorine (Cl) chlorine (Cl) selenium (Se) selenium (Se) potassium (K) potassium (K) Skip t...
11 months ago
A student cuts some fabric into two pieces. Is this change physical or chemical?(1 point) Responses It is a chemical change because there is no phase change. It is a chemical change because there is no phase change. It is a chemical change because the siz...
11 months ago
How are chemical changes different from physical changes?(1 point) Responses They involve heat. They involve heat. They are reversible. They are reversible. They include shifts in the phase of matter. They include shifts in the phase of matter. They form...
11 months ago
How does a balanced chemical equation demonstrate the Law of Conservation of Mass?(1 point) Responses it shows that only physical changes follow the Law of Conservation of Mass it shows that only physical changes follow the Law of Conservation of Mass it...
11 months ago
Sodium reacts with chlorine to form the compound sodium chloride, or salt. The chemical formula below shows how the two elements combine into a compound. 2Na + Cl2 → 2NaCl If the total mass of the reactants is 58.44 amu, what will be the total mass of the...
11 months ago
Which procedure could be used to demonstrate that matter is conserved during a physical change?(1 point) Responses Find the mass of an apple. Cut the apple and remove the core. Find the mass of the remaining apple. Find the mass of an apple. Cut the apple...
11 months ago
n the image above, is important in understanding substances. (2 points)
11 months ago
The image is a model of sulfuric acid that has a chemical formula of H2SO4. In 1-2 sentences, explain why creating models, like the one shown in the image above, is important in understanding substances.
11 months ago
Write it like an 8th grader did it please.
11 months ago
don't use big words and don't use , and make every thing lowercase
11 months ago
don't use big words and don't use , and make every thing lowercase
11 months ago
make it less smart please.
11 months ago
If the atomic number of an element is six and the atomic mass is 15, how many neutrons does it have?
11 months ago
I KNEW IT!!!!
11 months ago
What is the atomic mass of Boron? * 1 point Captionless Image 5 amu 12.32 amu 10.8 amu
11 months ago
All of these are right!
11 months ago
A person throws a ball up into the air, and the ball falls back toward Earth. At which point would the kinetic energy be the lowest?(1 point) Responses when the ball is at its highest point when the ball is at its highest point when the ball leaves the pe...
11 months ago
A book is at rest on a flat table. A person gives the book a shove and it slides across the table. The book eventually comes to rest again near the edge of the table. How does the potential and kinetic energy change during this process?(1 point) Responses...
11 months ago
Which is a good description of potential energy?(1 point) Responses stored energy stored energy conserved energy conserved energy energy of reaction energy of reaction energy of motion
11 months ago
A student drops a basketball into a pool from a height of 5 meters while a friend records the approximate splash height. They want to make a bigger splash in their next trial. How can they achieve this?(1 point) Responses They can drop the same ball with...
11 months ago
Which characteristic will be affected by increasing the speed of an object from 30 meters per second ( ms ) to 40 meters per second( ms )?(1 point) Responses kinetic energy kinetic energy weight weight gravitational attraction gravitational attraction mas...
11 months ago
A student drops a 350-gram rock and a 500-gram rock into a pool from a height of 8 meters. Which statement about the investigation is accurate?(1 point) Responses The 350-gram rock causes a larger splash because it has less mass. The 350-gram rock causes...
11 months ago
Use the table of information from a student's investigation to answer the question. Object Splash Size Ranking W 2 X 4 Y 1 Z 3 A student drops several objects of the same size into a bucket of water from a height of 2 meters. She ranks the splash size fro...
11 months ago
You are told 3 things...1. That there are two objects with equal masses. 2. Both objects are in motion. 3. One object has a greater kinetic energy than the other. How is this possible? (1 point) Responses One object is blue and one object is red. One obje...
11 months ago
A large truck and a small car are moving at the same speed, traveling up and down hills, and over bumpy roads. Which one has more kinetic energy?(1 point) Responses The truck has less kinetic energy because it has greater mass. The truck has less kinetic...
11 months ago
Which object has the greatest kinetic energy?(1 point) Responses a green car with a mass of 500kg moving at 21 m/s a green car with a mass of 500kg moving at 21 m/s a blue car with a mass of 500 kg moving at 30 m/s a blue car with a mass of 500 kg moving...
11 months ago
A skydiver jumps out of a plane and begins to accelerate. His speed increases to 20 m/s, then 30 m/s. His acceleration slows until he reaches a constant speed of 50 m/s. Which statement accurately describes his kinetic energy while falling?(1 point) Respo...
11 months ago
What does the atomic number tell us about an atom? * 1 point The atomic number tells us how many protons and neutrons are in a neutral atom or element The atomic number tells us how many protons and electrons are in a neutral atom or element The atomic nu...
11 months ago
How many electrons can be in the FIRST energy level of any atom or element? * 1 point 4 8 2
11 months ago
How do we find the number of neutrons in an atom? * 1 point Add the atomic number and mass number together Subtract the number of electrons from the number of protons Subtract the number of protons from the mass number
11 months ago
Which of the following does the atomic number of an atom or element represent? * 1 point The number of protons in the atom The number of neutrons in the atom The number of particles in the nucleus of the atom
11 months ago
Make it sound like an 8th grader did and don't use to many big words also don't add any , and . and make everything lowercase and add a lot of and's also make it a very short sentence.
11 months ago
Use the picture to answer the question. The girl in the picture is at the highest point in swinging and starts to come down. Which statement best describes the changes in energy as she begins to descend? (1 point) Responses Potential energy is increasing,...
11 months ago
A person is riding a skateboard on a U-shaped ramp. At which point does the person have the greatest potential energy?(1 point) Responses in the middle of the ramp at its lowest point in the U in the middle of the ramp at its lowest point in the U on the...
11 months ago
Use the picture to answer the question. As the bicyclist rides from right to left, at which of the three points, if any, is the bicyclist’s potential energy increasing? (1 point) Responses The potential energy is increasing at point B because the bicyclis...
11 months ago
If a monkey drops a banana off of a cliff, where are the potential and kinetic energies of the banana equal?(1 point) Responses at the top at the top halfway down halfway down a quarter of the way down a quarter of the way down at the bottom
11 months ago
Question Which example demonstrates kinetic energy?(1 point) Responses A wave crashing on the shore A wave crashing on the shore A stretched-out rubber band A stretched-out rubber band A car parked in the parking lot A car parked in the parking lot A rock...
11 months ago
When Kiara plays the piano, how does kinetic energy transfer from one object to the other?(1 point) Responses Energy transfers from Kiara’s fingers to the piano keys Energy transfers from Kiara’s fingers to the piano keys Energy transfers from the piano k...
11 months ago
Which statement correctly identifies the relative levels of kinetic and potential energy in a hydroelectric dam?(1 point) Responses Kinetic energy is highest at the top; potential energy is highest at the bottom. Kinetic energy is highest at the top; pote...
11 months ago
Two different rivers have drops that are the same height. In river A, this drop of the river is a waterfall. In river B, this drop has the generator for a hydroelectric dam. In what way does the energy of the water differ between the drops in the two rive...
11 months ago
Use the diagram to answer the question. The turbines can be seen inside this hydroelectric dam. Why are they located at that particular height? (1 point) Responses There is a large drop, so the water will have a lot of kinetic energy to transfer to the tu...
11 months ago
A person throws a ball up into the air. At which point in its path will the ball have the greatest potential energy?(1 point) Responses when the ball reaches its highest point when the ball reaches its highest point when the ball leaves the person’s hand...
11 months ago
Use the table of information from an investigation to answer the question. Student Depth of Object in Sand (cm) Maddie 1.8 Naveed 4.0 Two students drop an object into sand from a height of 1.5 meters. They record the depth of the hole made in the sand by...
11 months ago
A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?(1 point) Responses She should drop two balls of the same mass from differe...
11 months ago
Which falling object will result in the least kinetic energy when it collides with the ground?(1 point) Responses 10 grams of dirt falling at 2 m/s 10 grams of dirt falling at 2 m/s 100 grams of dirt falling at 15 m/s 100 grams of dirt falling at 15 m/s 1...
11 months ago
Use the image to answer the question. This image of a roller coaster is designed to show important information about potential and kinetic energy. One of these labeled pieces of information is incorrect. Which information is wrong, and why? (1 point) Resp...
11 months ago
Why are the turbines for hydroelectric dams located far below the top of the dam?(1 point) Responses to ensure that the water does not lose too much potential energy before reaching the turbines to ensure that the water does not lose too much potential en...
11 months ago
A child is swinging back and forth on a swing. Changes in her kinetic and potential energy are happening each moment. At which point, or multiple points, in her swinging would each of these two types of energy be at a maximum? In one to two sentences, des...
11 months ago
Make it sound like an 8th grader did and also don't use . and , and make sure everything is lowercase and don't use any big words also make it a short sentence.
11 months ago
An athlete is practicing shotput using a 16-pound shot, and he throws it 40 feet. He then uses a 12-pound shot and throws it 50 feet. In three to four sentences, explain why there is a difference in these throws using the ideas of mass and speed and how e...
11 months ago
Make it sound like an 8th grader did and also don't use . and , and make sure everything is lowercase and don't use any big words also make it a short sentence and also use and alot
11 months ago
What is kinetic energy?(1 point) Responses the energy of radiation the energy of radiation thermal energy thermal energy the energy of motion the energy of motion stored energy
11 months ago
crap sorry I asked the question again
11 months ago
A fisherman in a boat is drinking a cup of hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison of the lake water and the coffee?(1 point) Responses The lake will have more total thermal energy, and th...
11 months ago
Use the image to answer the question. The gallium in the image is melting in the person’s hand. Which changes will occur on a microscopic level? (1 point) Responses The gallium atoms will gain kinetic energy. The gallium atoms will gain kinetic energy. Th...
11 months ago
Look at the map. What could best be inferred from the map? (1 point) Responses Phoenicia was frequently at war with other empires. Phoenicia was frequently at war with other empires. Phoenicians traded with peoples in Africa and Europe. Phoenicians traded...
11 months ago
Which of the following texts contains commentaries on the teachings of Moses? (1 point) Responses the Writings the Writings the Torah the Torah the Hebrew Bible the Hebrew Bible the Talmud
11 months ago
Look at the photograph. What Sumerian art form does the photograph show? (1 point) Responses cylinder seals cylinder seals stone stelae stone stelae ivory netsuke ivory netsuke cuneiform printing
11 months ago
Use the drop-down menu to complete the sentence.(1 point) Sumer is important in world history because it was Choose
11 months ago
When Judaism began, how was it different from other religions in the ancient world? (1 point) Responses Judaism had sacred texts. Judaism had sacred texts. Judaism did not instruct its followers about how to lead their daily lives. Judaism did not instruc...
11 months ago
Use the drop-down menus to complete the sentence. (1 point) The official religion of the Persian Empire was Choose , whose main belief is Choose
11 months ago
Use the drop-down menu to complete the sentence.(1 point) The term Mesopotamia refers to land between Choose
11 months ago
Why did priests play an important role in Sumerian city-states? (1 point) Responses Priests were at the top of the Sumerian social order. Priests were at the top of the Sumerian social order. Sumerians believed only priests could communicate with gods to...
11 months ago
What characteristics allowed southern Mesopotamia to become the cradle of civilization? Select the two correct answers. (1 point) Responses Nomads developed aggressive herding techniques. Nomads developed aggressive herding techniques. Flooding of the Tig...
11 months ago
What relationship does the commandment "Remember the Sabbath day" relate to? (1 point) Responses parent-child parent-child king-subject king-subject God-believer God-believer sister-brother
11 months ago
The Assyrian rulers divided their empire into 70 smaller units of government called provinces. Then they assigned a governor to each province who reported directly to the Assyrian ruler. What was the goal of this technique? (1 point) Responses to keep pow...
11 months ago
How was Darius able to maintain control of such a large empire? Select the two correct answers. (1 point) Responses He forced provinces to pay tributes they were unable to afford. He forced provinces to pay tributes they were unable to afford. He gave loc...
11 months ago
How did the Phoenicians’ willingness to travel far for trade eventually lead to the spread of their civilization? (4 points)
11 months ago
Make it sound like an 8th grader did and also don't use . and , and make sure everything is lowercase and don't use any big words also make it a short sentence and also use and alot
11 months ago
when you say colony what does the mean??
11 months ago
How does the Talmud show that studying Jewish sacred writings is an important part of Judaism? (4 points)
11 months ago
Make it sound like an 8th grader did and also don't use . and , and make sure everything is lowercase and don't use any big words also make it a short sentence and also use and alot.
11 months ago
Make it sound like an 8th grader did and also don't use . and , and make sure everything is lowercase and don't use any big words also make it a short sentence and also use and alot
11 months ago
Multiple Choice What did the STRICT study generally find about the effect of Internet use on sleep? (1 point) Responses Teens who use the Internet and phone after bedtime have a variety of sleep problems. Teens who use the Internet and phone after bedtime...
11 months ago