17.3 subtracting polynomial expressions answer key

Answer:

A struggle between the Eastern Bloc and the West that lasted 40 years.

The final temperature of the water after addition to the heated water at 20° C in degree kelvins' is calculated as; 295.23 K

We are given;

mass of the initial water; m₁ = 2.5 kg

specific heat capacity of water; c = 4189 J/kg.K

initial temperature of water; T₁ = 13.5 ⁰C

final temperature of the water; T₂ = 22.5 ⁰C

mass of the final water; m₂ = 0.5 kg

initial temperature of the final water; T₁,i = 20 ⁰C

If the system is isolated, then we have;

m₁*c*(T_f - T₂) + m₂*c*(T_f - T₁,i) = 0

c will cancel out to give;

[2.5T_f - (2.5*22.5)] + [0.5T_f - (0.5*20)] = 0

2.5T_f - 56.25 + 0.5T_f - 10 = 0

3T_f = 66.25

T_f = 66.25/3

T_f = 22.08°C = 295.23 K

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The volume of the figure is the amount of space in it.

Using the assumed values, the volume of the cone is 37.68

The question is incomplete; so I will give a general explanation on how volumes can be calculated..

Assume the figure is a cone of the following dimension:

Radius (r) = 3 meters

Height (h) = 4 meters

The volume of a cone is calculated as:

[tex]V = \frac13 \pi r^2h[/tex]

So, we have:

[tex]V = \frac13 * 3.14 * 3^2 * 4[/tex]

[tex]V = 37.68[/tex]

Using the assumed values, the volume of the cone is 37.68

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The equation computed shows that the price of apple is $2 and the price of banana will be $2.75.

Christopher sold 35 pounds of apples and 34 pounds of bananas for a total revenue of $163.50. This will be:.

35a + 34b = 163.50

He also sold 15 pounds of apples and 17 pounds of bananas for a total revenue of $76.75. This will be:

15a + 17b = 76.75

Equate both equations

35a + 34b = 163.50 ..... i

15a + 17b = 76.75 ...... ii

Multiply equation i by 15.

Multiply equation ii by 35

525a + 510b = 2452.50 .... iii

525a + 595b = 2686.25 .... iv

Subtract equation iii from iv

85b = 233.75

b = 233.75/85

b = 2.75.

The price of banana is $2.75.

The price of apple will be:

35a + 34b = 163.50

35a + 34(2.75) = 163.50

35a + 93.50 = 163.60

35a = 163.50 - 93.50

35a = 70

a = 70/35

a = 2

The price of apple is $2.

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Answer:

15

Explanation: cause 1/2

The table is an illustration of arithmetic sequence

The equation of the arithmetic sequence is B(s) = 7.5s

From the table (see attachment), we have the following formula

B(s) = 7.5s

For s =0 to 4, we have:

B(0) = 7.5(0) = 0

B(1) = 7.5(1) = 7.5

B(2) = 7.5(2) = 15

B(3) = 7.5(3) = 22.5

B(4) = 7.5(4) = 30

So, the complete table is:

s       B(s)

0        0

1         7.5

2        15

3       22.5

4       30

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Answer:

1. 1906 2. San Francisco

Answer:

Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.

Answer:

0.5hz

Explanation:

A persistent pattern of disregard for and violation of the rights of others which is commonly known as sociopath is an: antisocial personality disorder (ASPD).

ASPD is an acronym for antisocial personality disorder can be defined as a type of personality disorder that is primarily characterized by disregard for people, destruction, violation of people's rights, infliction of injuries on others and a lack of close friendships or relationships.

In Psychology, an antisocial personality disorder (ASPD) includes the following characteristics and signs:

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Answer:

Selective permeability of the cell membrane refers to its ability to differentiate between different types of molecules, only allowing some molecules through while blocking others.

The expressions are illustrations of rational exponent expressions

The equivalent expressions are [tex](8x)^\frac 12 = 2\sqrt{2x[/tex], [tex]6z^\frac 12 = 6\sqrt z[/tex] and [tex]\sqrt{19} = 19^\frac 12[/tex]

From the complete question (see attachment), we are to simplify or rewrite the following expressions

[tex](8x)^\frac 12[/tex]

[tex]6z^\frac 12[/tex]

[tex]\sqrt{19[/tex]

For [tex](8x)^\frac 12[/tex], we simply apply the exponent rule of indices

[tex](8x)^\frac 12 = \sqrt{8x[/tex]

Express 8 as 4 * 2

[tex](8x)^\frac 12 = \sqrt{4 * 2x[/tex]

Take the square root of 4

[tex](8x)^\frac 12 = 2\sqrt{2x[/tex]

For [tex]6z^\frac 12[/tex], we apply the exponent rule of indices

[tex]6z^\frac 12 = 6\sqrt z[/tex]

For [tex]\sqrt{19[/tex], we apply the the same rule

[tex]\sqrt{19} = 19^\frac 12[/tex]

Hence, the equivalent expressions are [tex](8x)^\frac 12 = 2\sqrt{2x[/tex], [tex]6z^\frac 12 = 6\sqrt z[/tex] and [tex]\sqrt{19} = 19^\frac 12[/tex]

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The chemical equations that show  a reaction that occurs when someone takes an antacid are;

Hydrochloic acid would normally react with the basic substances in the stomach. Now, these substances that react with hydrochloric acid in the stomach are magnesium hydroxide, sodium bicarbonate and calcium carbonate.

Thus, from the above dewscription, the chemical equations that show  a reaction that occurs when someone takes an antacid are;

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There are a lot of  math for  grade 7. An example of practice and skills fluency work is Adding and Subtracting Integers.

An example of Adding and Subtracting Integers is: Solve for  -5+(-3)

−5+(−3).

Note that to  add integers having the same sign, one has to keep the same sign and then they can add the absolute value of each number.

We are given the expression −5+(−3)

The next step is to use counters to stand in place of the numbers -5 and -3:

Note that there  are 5+3 - -8 counters and all the counters stands as negative integer.

To evaluate the expression, on can see that there are:

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Answer:

occasions

Explanation:

During occasions such as Easter, Christmas etc when preparing a food take risk and measures make it delicious

[tex]\green{ \underline { \boxed{ \sf{Force,F= Mass \times Acceleration }}}}[/tex]

So,

[tex] \sf Acceleration,a = \frac{Force}{Mass}[/tex]

[tex] \sf \implies \frac{20}{32} [/tex]

[tex]\implies \frac{5}{8} m/s^2[/tex]

Now,

By first equation of motion -

[tex]\green{ \underline { \boxed{ \sf{v-u=at}}}}[/tex]

So,

[tex]\sf t = \dfrac{v-u}{a} [/tex]

where

Putting Values -

[tex]\sf t = \dfrac{9-4}{ \dfrac{5}{8}} [/tex]

[tex]\sf t = \dfrac{5}{ \dfrac{5}{8}} [/tex]

[tex]\sf t = \cancel5 \times \dfrac{8}{\cancel{5}} [/tex]

[tex]\sf t = 8 \:seconds[/tex]

>>>Therefore, Force is applied for 8 seconds.

The answer to whether the writer should keep or delete the underlined text is; Keep it, because it provides an example that explains how confirmation bias affects memory

In language, a clause is a constituent that connects a semantic predicand and a semantic predicate. A common clause is made up of a subject and a syntactic predicate, the last ordinarily an action word with any items and different modifiers.

A modifier clause depicts or gives more data about the action word lets us know when, where, how, how much, or under what condition something is going on. Model she cried in light of the fact that her shell was broken. A thing clause replaces a thing in the sentence.

Punctuation fills our composition with quiet inflection. We stop, stop, underline, or question utilizing a comma, a period, an interjection point or a question mark.

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This exercise refers to the explanation of what distributive property is especially in relationship to addends.

The process of obtaining the product of the addition of two or more addends by a figure that gives the same result as multiplying each addend individually by that figure and then adding their products together is referred to as distributive property.

A great example of distributive property is given below:

When asked for the answer of 5 (6 +1), applying distributive property, we have:

5(6+1) = 5 x 6 + 5 X 1 = 35.

Note that the 5 outside the bracket is used to multiply everything inside the bracket, hence the effect of Distributive Properties.

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Ans The NRF guiding principles

Explanation:

The NRF is built on scalable, flexible, and adaptable concepts.

Scalable, flexible, and adaptable operational capabilities are indeed included in the (NRF)National Response Framework's five key principles.

The National Response Framework (NRF) is a comprehensive guide developed by the United States Department of Homeland Security to facilitate effective response and recovery efforts during emergencies, disasters, and incidents. The NRF's five key principles, known as the "Five Mission Areas," outline the fundamental aspects of emergency management. These mission areas include:

1. Prevention: Activities aimed at preventing emergencies or disasters from occurring. This involves measures such as risk assessment, hazard mitigation, and public education to minimize the likelihood of incidents.

2. Protection: Actions focused on safeguarding individuals, critical infrastructure, and key assets from potential threats and hazards.

3. Mitigation: Efforts to reduce the impact and severity of disasters by implementing measures to minimize the potential damage and disruption caused by hazards.

4. Response: Immediate actions are taken to address and manage the consequences of an incident. This includes coordinating emergency response activities, mobilizing resources, conducting search and rescue operations, providing medical assistance, and ensuring public safety.

5. Recovery: Activities aimed at restoring affected communities and rebuilding the impacted areas after an incident. This includes facilitating the recovery process, providing assistance to individuals and businesses, restoring critical services, and rebuilding infrastructure.

In summary, scalable, flexible, and adaptable operational capabilities are integral to the National Response Framework's five key principles, as they enable effective emergency management and response during various incidents and disasters.

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Answer:

sellers all suppliers are likely to reduce the supply of goods when there is a a decrease in the prices of the complementary goods. similarly the prices can be lowered when there is an exhaust supplies in the market. this means that when the supply is higher the prices tends to be lower and the demand decreases.

Answer: the goods selling price has gone down

Explanation: just took test

Answer:

6.58 X 10⁻¹³ N

Explanation:

12.2g answer

Try the stoichiometry method. You should get 12.2g as the answer

Based on the calculations, the temperature of this ideal gas is equal to 300.5 K.

Mathematically, the temperature of an ideal gas is given by this formula:

[tex]PV=nRT\\\\T=\frac{PV}{nR}[/tex]

Where:

Given the following data:

Number of moles = 12.20 moles.

Volume = 18.35 L.

Pressure = 16.40 atm.

Substituting the given parameters into the formula, we have;

[tex]T=\frac{16.40 \times 18.35}{12.20 \times 0.0821}\\\\T=\frac{300.94}{1.00162}[/tex]

T = 300.5 K.

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Answer:

Explanation:

The correct answer is the option B: alignment.

Explanation:

On one hand, design elements comprehends the term that describes fundamental ideas about the practice of visual design, such as the color, the points the lines, etc.

On the other hand, alignment is the name given, in the field of design, to the term that describes how a text is placed in order on the screen. Moreover, it enables the composition of a text document using different text positioning on the whole or selected part of a page.

Answer:B.

Explanation:

The kinetic energy of the two-block system with the given masses before the collision is determined as ³/₂Mvs².

The kinetic energy of the blocks before the collision is calculated as follows;

For a negligible friction effect, the kinetic energy of the two - block system after the collision is equal to the kinetic energy before the collision.

K.E(initial) = K.E(after)

K(after) = ¹/₂(m₁ + m₂)vs²

K(after) = ¹/₂(m + 2m)vs²

K(after) = ¹/₂(3m)vs²

[tex]K.E(after) = \frac{3}{2} Mv_s^2[/tex]

Thus, the kinetic energy of the two-block system with the given masses before the collision is determined as ³/₂Mvs².

The complete question is below:

block x of mass m slides across a horizontal surface where friction is negligible. block x collides with block y of mass 2m that is initially at rest, as shown in figure 1. after the collision, both blocks slide together with a speed vs , as shown in figure 2.

What is the kinetic energy of the two-block system before the collision?

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Answer:

y

=

ln

x

ln

4

Explanation:

Switch the places of

x

,

y

and subsequently solve for

y

:

y

=

4

x

x

=

4

y

ln

(

4

y

)

=

ln

x

We need to get an explicit solution, IE, isolate

y

.

Recalling that

ln

(

a

b

)

=

b

ln

a

:

y

ln

(

4

)

=

ln

x

y

=

ln

x

ln

4

Explanation:

Answer:

Late answer, but the answer is: A the countries occupied by Germany.

Explanation:

For future people I guess

The United States, Great Britain, the Soviet Union, and France participated in a joint occupation of the German state following Germany's defeat in the Second World War. Thus, option A is correct.

In Germany's defeat in World War II, the country was jointly occupied by the continent's four major allies: the United States, Great Britain, the Soviet Union, and France.

The military overthrow of the Soviet Union; the abolition of the alleged Communist menace to Germany; and the seizing of valuable Soviet-controlled land as Lebensraum (German for “Living space”) for long-term German settlement.

During World War II, Germany's air raids posed the toughest challenges to halting its incursions into Europe. For the neighboring European nations, Adolf Hitler's military prowess and fast-moving ground forces made life extremely tough.

Therefore, the countries occupied by Germany.

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The force between the two identical electrical charges with the given distance of seperation is 0.2247N.

Given the data in the question;

Coulomb's law states that the force between two electrical charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between the two charges.

This is expressed as;

[tex]F = k\frac{q_1q_2}{r^2}[/tex]

Where [tex]q_1\ and \ q_2[/tex] are the two electrical charges, r is the distance between the charges and k is the Coulomb constant ( [tex]k = 8.98755*10^9 kgm^3/s^2C^2[/tex] )

To determine the force between the two charges, we substitute our values into the expression above.

[tex]F = k\frac{q_1q_2}{r^2}\\\\F = (8.98755*10^9 kgm^3/s^2C^2)\frac{(1.0*10^{-5}C)(1.0*10^{-5}C)}{(2.0m)^2}\\\\F = (8.98755*10^9 kgm^3/s^2C^2)\frac{1.0*10^{-10}C^2}{4.0m^2}\\\\F = \frac{0.898755kgm^3/s^2}{4.0m^2}\\ \\F = 0.2247kgm/s^2\\\\F = 0.2247N[/tex]

Therefore, the force between the two identical electrical charges with the given distance of seperation is 0.2247N.

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Answer:

-4/7

Explanation:

5x+2x=-4

x=-4/7

i think its the answer