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An object’s speed is the distance it travels _____ the amount of time it takes.

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An object’s speed is the distance it travels _____ the amount of time it takes.

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A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic process a phase change

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A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic process a phase change

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An object pronoun takes the place of a/an _______ in the object part of a sentence. A. different pronoun B. noun C. verb D. adjective

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An object pronoun takes the place of a/an _______ in the object part of a sentence. A. different pronoun B. noun C. verb D. adjective

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Sam wants to buy 8 pencils and 6 pens, which cost a total of $8.50. He realizes he doesn’t have enough cash and instead takes only 4 of each, which costs only $5. What is the price of each pen and pencil? pen, $0.75; pencil, $0.50

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X = pencils, y = pens

8x + 6y = 8.50
4x + 4y = 5…..multiply by -2
—————-
8x + 6y = 8.50
-8x – 8y = -10 (result of multiplying by -2)
—————–add
-2y = – 1.50
y = -1.50 / -2
y = 0.75 <=== pens cost 0.75

4x + 4y = 5
4x + 4(0.75) = 5
4x + 3 = 5
4x = 5 – 3
4x = 2
x = 2/4
x = 0.50 <== pencils cost 0.50

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Kate takes the elevator from the ground floor (which is labeled 0) to a floor three levels below the ground floor. Which number represents the floor where she gets off the elevator?

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Answered by answersmine AT 22/10/2019 – 02:55 AM

The number should be -3. That is because she goes from 0 to three floors bellow, meaning it’s 0-3= -3. The first floor bellow would be -1, the second would be -2, and the third one is -3. It would be different if you counted it as number 1 as they do in some countries, but here it’s -3.

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70 POINTS!!! PLEASE HELP!!!WILL GIVE BRAINLIEST!!!!!!!!!!While it is no doubt true that literary analysis is an effective way of understanding a literary work in depth, it can be argued that analyzing a text takes away the enjoyment of reading it. Which mode of reading do you prefer, reading for pleasure without any effort at analysis or analyzing as you read? Or do you prefer some other combination of reading strategies? Explain your preference.

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I prefer reading for pleasure without any effort at analysis. Reading a passage once and looking up words in a dictionary will be a way to know new words and understand the text of the passage more.

Having a literacy device sheet in hand is important to comprehend if the text passage is a metaphor, simile, hyperbole etc and that help understand complex literacy language in poetry, Shakespearean language, and in eulogy themes.

Hope this helps.

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How does Walton describe the stranger he takes onboard

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How does Walton describe the stranger he takes onboard

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An airplane traveling 245 m/s east experiences turbulence, so the pilot slows down to 230 m/s. It takes the pilot 7 seconds to slow down to this speed. What is the acceleration of the plane? Round your answer to the nearest hundredth.

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Answer:

– 2.14 m/s^2

Explanation:

initial velocity , u = 245 m/s

final velocity, v = 230 m/s

time taken , t = 7 second

By use of first equation of motion,

v = u + a t

where, a be the acceleration.

Substitute the values of v, u and t

230 = 245 + a x 7

a = – 2.14 m/s^2

the acceleration is negative, it means the airplane is slowing.

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T takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equation can be used to find x, the number of hours it would take Franklin and Scott to make the patio together?

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T takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equation can be used to find x, the number of hours it would take Franklin and Scott to make the patio together?

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Texting is an increasingly popular means of communication with students at Mystic Falls High School. Students text their friends to make plans, ask questions, and share information. However, texting can also be distracting. It takes students' attention away from the primary purpose of school: learning. What is the tone of the article? a) meloncholy b) humerous c) respectful d) critical

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Texting is an increasingly popular means of communication with students at Mystic Falls High School. Students text their friends to make plans, ask questions, and share information. However, texting can also be distracting. It takes students’ attention away from the primary purpose of school: learning. What is the tone of the article? a) meloncholy b) humerous c) respectful d) critical

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It takes 31 employees and $7500 to build a car, and it takes 19 employees and $4300 to build a motorcycle. Genghis Motors wants to spend more than $84000 to build cars and motorbikes using at most 706 employees. Let C denote the number of cars they build and M the number of motorbikes they build. Write an inequality that represents the condition based on the number of employees.Write an inequality that represents the condition based on the number of dollars.

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we know it takes 31 workers to do a car, and 19 to do a motorcycle… so hmmm to make “c” cars, it will then take 31*c workers, or 31c

to make “m” motorcycles, it will then take 19*c or 19c employees

whatever those amounts of workers needed to make both, must be an amount  that is 706 or less, thus    

31c + 19m ⩽ 706

now…. it takes $7500 to make a car and thus to make “c” cars it will then take 7500* c or 7500c

it takes $4300 for a motorbike, thus to make “m” motorbikes, it will then take 4300*m, or 4300m

whatever those dollar amounts are, must be 84000 or more, since Genghis Motors wants to spend that OR more

7500c + 4300m > 84000

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The amount of time it takes to fill a whirlpool tub is inversely proportional to the square of the radius of the pipe used to fill it. If a pipe of radius 2.5 inches can fill the tub in 8 minutes, how long will it take the tub to fill if a pipe of radius 3.5 inches is used? How many inches would the tub fill approximately in minutes?

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The amount of time it takes to fill a whirlpool tub is inversely proportional to the square of the radius of the pipe used to fill it. If a pipe of radius 2.5 inches can fill the tub in 8 minutes, how long will it take the tub to fill if a pipe of radius 3.5 inches is used? How many inches would the tub fill approximately in minutes?

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Crystal is trying to get in shape for softball season so she takes a hip pop dance class at the gym for 45 minutes three days a week she wears a heart rate monitor and finds that her heart rate reaches one 25 bpm but her target heart rate zone is 142 through one 80 bpm which of the following because she do to get her heart rate into the target zone

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Crystal is trying to get in shape for softball season so she takes a hip pop dance class at the gym for 45 minutes three days a week she wears a heart rate monitor and finds that her heart rate reaches one 25 bpm but her target heart rate zone is 142 through one 80 bpm which of the following because she do to get her heart rate into the target zone

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Of the following events, which happens last in Romeo and Juliet? A: Tybalt fights with Mercutio. B: Paris meets Juliet at Friar Laurence’s cell. C: Romeo leaves Verona. D: Juliet takes the potion. Please help

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Answer: D. Juliet takes the potion.

Explanation: The event that happens last in “Romeo and Juliet” by William Shakespeare is D. Juliet takes the potion. The events happen as follows: A. Tybalt fights with Mercutio. Mercutio dies. Romeo fights Tybalt and kills him. C. Romeo leaves Verona. The Prince has ordered him to leave the city after he killed Tybalt. B. Paris meets Juliet at Friar Laurence’s cell. D. Juliet takes the potion to avoid having to marry Paris.

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Read this excerpt from a student's essay and answer the question below. "Having a brother with autism can be really stressful. You never know how he's going to react. It takes a lot of patience sometimes. You love him but sometimes he drives you crazy." What is the BEST description of the tone in this student sample? A. passive B. protective C. empathetic D. determined

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Read this excerpt from a student’s essay and answer the question below. “Having a brother with autism can be really stressful. You never know how he’s going to react. It takes a lot of patience sometimes. You love him but sometimes he drives you crazy.” What is the BEST description of the tone in this student sample? A. passive B. protective C. empathetic D. determined

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If it takes 10 men 4 hours to repair a barn, how long will it take 8 men to complete the task?

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If it takes 10 men 4 hours to repair a barn, how long will it take 8 men to complete the task?

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A 0.023 kg beetle is sitting on a record player 0.15 m from the center of the record. If it takes 0.070 N of force to keep the beetle moving in a circle on the record, what is the tangential speed of the beetle?

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Answer:

0.68 m/s

Explanation:

The centripetal force that keeps the beetle moving in circle is given by:

F=mfrac{v^2}{r}

where

m is the mass of the beetle

v is the tangential speed of the beetle

r is the distance of the beetle from the center of the record

In this problem, we know the force (F=0.070 N), the mass of the beetle (m=0.023 kg) and the distance from the center (r=0.15 m), therefore we can re-arrange the equation to find the tangential speed:

v=sqrt{frac{Fr}{m}}=sqrt{frac{(0.070 N)(0.15 m)}{0.023 kg}}=0.68 m/s

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What is the term for the amount of time it takes 50% of an element to decay

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What is the term for the amount of time it takes 50% of an element to decay

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What is the term for the amount of time it takes 50 % of an element to decay?

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What is the term for the amount of time it takes 50 % of an element to decay?

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A golfer takes two putts to get his ball into the hole once he is on the green. the first putt displaces the ball 8 m east, and the second 4.14 m south

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A golfer takes two putts to get his ball into the hole once he is on the green. the first putt displaces the ball 8 m east, and the second 4.14 m south

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A 0.023 kg beetle is sitting on a record player 0.15 m from the center of the record. if it takes 0.070 n of force to keep the beetle moving in a circle on the record, what is the tangential speed of the beetle? 0.68 m/s 0.46 m/s 0.33 m/s 0.11 m/s

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Answer:

Tangential speed is 0.68 m/s

Explanation:

It is given that,

Mass of the beetle, m = 0.023 kg

It is placed at a distance of 0.15 m from the center of record i.e. r = 0.15 m.

If it takes 0.070 n of force to keep the beetle moving in a circle on the record i.e. centripetal force acting on it is, F = 0.070 N

We have to find the tangential speed of the beetle. The formula for centripetal force is given by :

F=dfrac{mv^2}{r}

v is tangential speed

v=sqrt{dfrac{Fr}{m}}

v=sqrt{dfrac{0.070times 0.15}{0.023}}

v = 0.675 m/s

or

v = 0.68 m/s

Hence, the correct option for tangential speed is (A).

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A loaded moving truck is traveling 30 mph faster than a freight train. in the time it takes the train to travel 135 miles, the truck travels 225 miles. find the speed of the truck

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Speed of truck= x
speed of train=x-30
A loaded moving truck is traveling 30 mph faster than a freight train. in the time it takes the train to travel 135 miles, the truck travels 225 miles. find the speed of the truck.

A loaded moving truck is traveling 30 mph faster than a freight train…
(x-30)=speed of train
the time it takes the train to travel 135 miles, the truck travels 225 miles…
135/(x-30)=225/x
the you multiply on both sides the x values and get…
 135x=225x-6750
then you subtract 225x on both sides…
-90x=-6750
then you divide -90 on both sides…
x=75
the speed of the truck is 75mph
i hope this helped give me a thanks and a 5 star rating if it helped! c:

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A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

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The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies. 

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface. 

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h. 

So the time for the pencil and eraser to touch is T=1.3449 hours. 

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

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The right answer is Transgenic organisms can produce a desired product that may benefit other organisms.

A transgenic organism contains DNA combining  stably integrated in all its cells. In other words, the organism, be it a plant, an animal or a microorganism, has a new piece of DNA embedded in it. a chromosome in each of its cells. This “new piece” of DNA usually contains a gene from another organism (plant, animal or other) that has been modified to be expressed in the new  organization. A transgenic organism may even possess the DNA of another organism of the same species. The inserted gene can be called the transgene.

Currently, diabetics are treated by injecting insulin from either a healthy human donor or cultures of genetically modified (transgenic) bacteria that secrete the protein.

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The waitress and hostess at a restaurant share the tips at the end of every shift. Between the two of them, they earn an average of $75 in tips. The waitress take $55 and the hostess takes $20. If they continue to earn money at this rate, how much will the waitress receive if they earn $300 at the end of their next shift?

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Answer:

3 hours.          

Step-by-step explanation:

Let x be the time taken by shoe repairman to repair one pair.

We have been given that his assistant, who takes twice as long to repair a pair of shoes. So time taken by his assistant to repair one pair of shoes would be 2x.

The number of pair of shoes repaired by repairman in one hour would be frac{1}{x}.

The number of pair of shoes repaired by assistant in one hour would be frac{1}{2x}.

We have been given that together they can fix 16 pairs of shoes in an eight-hour day. We can represent this information in an equation as:

frac{1}{x}+frac{1}{2x}=frac{8}{16}

frac{1}{x}+frac{1}{2x}=frac{1}{2}

Let us have a common denominator.

frac{2*1}{2*x}+frac{1}{2x}=frac{1}{2}

frac{2}{2x}+frac{1}{2x}=frac{1}{2}

frac{2+1}{2x}=frac{1}{2}

frac{3}{2x}=frac{1}{2}  

Upon cross multiplying our equation we will get,

2x*1=3*2

2x=3*2

frac{2x}{2}=frac{3*2}{2}

x=3

Therefore, it take 3 hours for the repairman to fix one pair of shoes by himself.

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