1. Which of the following is a linear inequality in two variables?
A. 7x - 4y = 3
C. 2t < 6
B. 4m + 3 < 23
D. 3 + 5t 2 3r

2. Which of the following is NOT a linear inequality in two variables?
A. 4a - 2b > 7
C. 6p 2
B. 4 + 8x < 14y
D. 5m + 6 > 3n

3. In linear inequalities in two variables, it has
solution/s.
A.O
B. 1
C. 2
D. Infinite

4. In the Inequality x + y = 5, which of the following in NOT a solution?
A. (4, 5)
B. (2, 2)
C. (1, 3)
D. (4,0)


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Answer:

natural selection

Explanation:

Answer:

The answer is honey.

Explanation:

Answer: alcohol

Explanation:

Answer:

1. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

2. Given below are some of the examples of the chemical reactions in our daily life:

Photosynthesis.

Combustion.

Aerobic cellular respiration.

Anaerobic respiration including the process fermentation.

Metathesis reactions, for example, vinegar and baking soda.

Oxidation which includes rusting.

Digestion.

3. A chemical formula is the combination of atomic symbols that designate a particular chemical compound, or a substance with two or more different elements. ... A chemical equation shows one or more chemical compounds (reactants) being converted into different chemical species called products.

Answer:

Number of Fe atoms = 2.709 × 10^23 atoms.

Explanation:

Given the following data;

Number of Fe moles = 0.450 mole

We know that Avogadro constant is equal to 6.02 * 10^23 mol¯¹

Number of Fe atoms = number of Fe moles * Avogadro constant

Substituting into the equation, we have;

Number of Fe atoms = 0.450 × 6.02 * 10^23

Number of Fe atoms = 2.71 × 10^23 atoms.

Note: Fe is the symbol for the chemical element Iron.

Answer:

[tex]Mg^{2+}+2OH^{-}=>Mg(OH)2[/tex]

Explanation:

1.Oort Cloud

2.Uranus Earth and Mars

3.Kuiper Belt

4.Asteroid Belt

Answer:

Air in the atmosphere acts as a fluid. The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air. This bubble of air rises into the atmosphere.

Explanation:

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Answer:

Dominos prank call hahahaha

Answer:

why

Explanation:

Answer:

binary and 11

Explanation:

CaCl2 or Calcium Chloride is an ionic bond and not a covalent bond. Since there should be sharing of electrons between two atoms to be a covalent bonding. In case of calcium chloride, the calcium gives up an electron to each chlorine atom, becoming Ca2+ ions and chlorine become Cl– ions.

:)

Answer:

24.5°C

Explanation:

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Answer:

Because the particles are in motion, they will have kinetic energy. The particles will not all have the same energy, and the energy of the particles is constantly changing as they undergo changes in speed. Thus, for a given sample of matter, we can only talk about the average kinetic energy of the particles.

Explanation:

I hope this helps and pls mark me brainliest :)

We do know that if we "give" energy to a given object, the temperature of the object increases.

So there is a direct relationship between temperature and energy.

From this idea, we can conclude that:

"As we increase the energy, we also will see an increase in molecular motion."

We also do know that, as the temperature of an object increases, also does the kinetic energy of the particles that conform to the object (as the kinetic energy increases, the particles move more, this is why as we increase the temperature we usually see an increase in the volume of the object).

This increase in kinetic energy is related to the molecular motion (the movement of the electrons and nucleus o a molecule) as the kinetic energy of these parts increase, these move more.

So the relationship between molecular motion and energy is:

As we increase the energy, we also will see an increase in molecular motion.

If you want to learn more, you can read:

https://brainly.com/question/12280673

Answer:

Explanation:

may u explain what u mean then i will be able to help u because i like knows this but what u mean will be better so i can tell u the right answer thanks have a good day

Answer:

dude

Explanation:

dude use a calculator, \ USE A CALCULATOR

Answer:

Melting points are often used to characterize organic and inorganic crystalline compounds and to ascertain their purity. Pure substances melt at a sharp, highly-defined temperature (very small temperature range of 0.5 – 1 °C) whereas impure, contaminated substances generally exhibit a large melting interval.

Explanation:

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Answer:

it produce atp

Explanation:

.............

Cellular respiration is a metabolic process that occurs in the cells of an organism. Carbon dioxide from cellular respiration aids the process of photosynthesis.

Cellular respiration is a process that takes place in the organism's cell where the cellular oxygen or chemical energy gets utilized and converted to ATP and waste like carbon dioxide.

The carbon dioxide released by the organism in the atmosphere is used by plants in the process of photosynthesis. Photosynthesis is a process that utilizes carbon and water to form glucose and oxygen.

Therefore, cellular respiration supports the process of photosynthesis by option D. producing carbon dioxide.

Learn more about cellular respiration and photosynthesis here:

https://brainly.com/question/18812151

Answer:

[tex]0.75\ \text{M}[/tex]

Explanation:

[tex]C_1[/tex] = Concentration of [tex]Na_2CO_3[/tex]

[tex]C_2[/tex] = Concentration of [tex]HCl[/tex] = 1 M

[tex]V_1[/tex] = Volume of [tex]Na_2CO_3[/tex] = 20 mL

[tex]V_2[/tex] = Volume of [tex]HCl[/tex] = 15 mL

We have the relation

[tex]V_1C_1=V_2C_2\\\Rightarrow C_1=\dfrac{V_2C_2}{V_1}\\\Rightarrow C_1=\dfrac{15\times 1}{20}\\\Rightarrow C_1=0.75\ \text{M}[/tex]

The concentration of [tex]Na_2CO_3[/tex] is [tex]0.75\ \text{M}[/tex].

answer:

-4

hope this helps

Answer:

Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. ... Upwelling brings nutrients to the surface.

Answer: [tex]8.38\times 10^{23}atoms[/tex] of carbon

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

mass of sugar= [tex]density\times volume=1.59g/ml\times 25ml=39.75g[/tex]

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{39.75g}{342.3g/mol}=0.116moles[/tex]

1 mole of sugar [tex]C_{12}H_{22}O_{11})[/tex] contains = [tex]12\times 6.023\times 10^{23}=72.28\times 10^{23}atoms[/tex] of carbon

0.116 mole of sugar [tex]C_{12}H_{22}O_{11})[/tex] contains = [tex]\frac{72.28\times 10^{23}}{1}\times 0.116=8.38\times 10^{23}atoms[/tex] of carbon

Answer:

Calcium iron oxide (CaFe2O4)

PubChem CID 6336546

Molecular Formula CaFe2H8O4

Synonyms Calcium iron oxide (CaFe2O4) 12013-33-1 Calcium ferrite EINECS 234-584-5

Molecular Weight 223.83 g/mol

Component Compounds CID 23925 (Fe) CID 5460341 (Calcium) CID 962 (Water)

Answer:

last one

Explanation:

Answer:

full moon

hope this helps

Answer:

150g-125g

=25 of hot chocolate mix

Answer:

A. The rate of the reverse reaction increases with an increase in the concentration of CaCO3(s)

Explanation:

If the concentration of a reactant has increased, The substance will shift in the direction of the reaction that uses the reactants, So that the Reactants substance Increases.

Answer:

primary consumers and sometimes plants

Answer:Two

Explanation: