John will need to sleep for 10.3 hours before his second exam so that the
average of his two exam scores is an 80.
We were given
8 hours of sleep = 70
To get average of 80
70+ x = 80
2
Cross multiply:
70+x = 160
x= 160-70
= 90.
If 8 hours of sleep = 70
x hours of sleep = 90
Cross multiply
8× 90 = 70 × x
720 = 70x
x = 720/70
x = 10.2857
≈ 10.3 hours of sleep
Read more about Equation here https://brainly.com/question/17202391
Caleb draws two triangles and claims that the triangles are congruent.
Answer:
your question needs more description or an image. I'll help if you comment the rest of the question.
Explanation:
Boyle’s law states that if the temperature of an ideal gas is held constant, then the pressure p of the gas and its volume v satisfy the relationship p=kv, where k is a constant. Which of the following best describes the relationship between the rate of change, with respect to time t, of the pressure and the rate of change, with respect to time t, of the volume?.
The best answer that describes the relationship between the rate of change with respect to time of the pressure and the rate of change with respect to time t of the volume is; dP/dt = (-k/V²)(dV/dt)
We are given;
p = k/v
Thus if we cross multiply, we will get;
PV = k
Where;
P is pressure
V is volume
k is a constant
Using the product rule of differentiation on both sides with respect to time t gives;V(dP/dt) + P(dV/dt) = 0
This is because k is a constant.
Putting k/v for P gives;
V(dP/dt) + (k/V)(dV/dt) = 0
>> V(dP/dt) = - (k/V)(dV/dt)
Divide both sides by V by division property of equality to get;
dP/dt = (-k/V²)(dV/dt)
Read more about Boyles' law at; https://brainly.com/question/1696010
What is essential to delivering a successful presentation.
Answer:
The principles of good communication.
Explanation:
Got it right on the quiz.
This cell is undergoing a step of meiosis i. What step is the cell in? the begining of prophase i the middle of metaphase i the end of anaphase i the middle of telophase i.
Answer:
Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms used to produce the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome.
Explanation:
Answer:
answer is B
the middle of metaphase I
Explanation:
hope this helps!
What is an equation of a parabola with the given vertex and focus (-2 5) (-2 6).
Which of the following processes suggest that matter is made up of minute particles.
Answer:
the answer is evaporation
Explanation: Evaporation is the process by which a liquid transforms into vapor (a gas). When some material is in its liquid phase, its particles are really close together (but not as much as we would see in a metal). As the temperature of the liquid increases, also does the kinetic energy of the particles. This cause the particles in the water to move a lot faster, thus its oscillations are larger. This causes an increase in the volume of the material.
Incisors (front teeth) act as wedges in the human body. Which change would increase the mechanical advantage of incisors? a decrease in the distance of the teeth from the fulcrum an increase in the distance of the teeth from the fulcrum an increase in the thickness at the widest part of the teeth and no change in the length of the teeth an increase in the length of the teeth and no change in the thickness at the widest part of the teeth.
Based on the information given about the wedge, the option that will increase the mechanical advantage of incisors is D. an increase in the length of the teeth and no change in the thickness at the widest part of the teeth.
A wedge simply means a triangular shaped tool that's used as a simple machine. It is used for the separation of objects.
It should be noted that Incisors (front teeth) act as wedges in the human body and there can be an increase the mechanical advantage of incisors when there's an increase in the length of the teeth and no change in the thickness at the widest part of the teeth.
Learn more about wedge on:
https://brainly.com/question/1242243
Answer:
D
Explanation:
EDGE 22
Which of the following lists includes only organisms composed of cells?.
Answer:
last one
Explanation:
protists, bacteria, plants
Two congruent squares are shown in figures 1 and 2 below.
Which of these might affect how an age-of-consent law.
thiers no choices to chose from.
What happens to the temperature of an object when the particles are moving faster.
Answer:
heat is increased
Explanation:
this increases the kinetic energy of particles inside an object , and they collide on the walls of an object
At midday, what is happening in the leaf of a plant?.
which expression is equivalent to a+4a+8a+4a+8
Answer:
17a+8
Explanation:
combine like terms (all of the A's) and then the rest of the equation (8)
Answer:
17a+8
Explanation:
A compound is broken down by chemical means during.
Answer:
"broken apart in chemical reactions called decomposition reactions"
Explanation:
So, Compounds can be broken apart in chemical reactions called decomposition reactions. For example, water can be broken down into the diatomic elements hydrogen gas and oxygen gas in a chemical reaction called electrolysis. ... Some compounds undergo thermal decomposition when they are heated
What does this excerpt tell us most about the cat? she sleeps a lot. She is content. She feels cold. She is unconcerned.
Answer:
The answer is d and to check your self here is the passage
Last of all came the cat, who looked round, as usual, for the warmest place, and finally squeezed herself in between Boxer and Clover; there she purred contentedly throughout Major's speech without listening to a word of what he was saying.
Explanation:
In "Lather and Nothing Else," the line "feigning casual unconcern" reveals the following about the narrator's feelings.
What "Feigning casual unconcern" shows?"Feigning casual unconcern" shows that the narrator is really nervous about the man whose beard he has to shave, but he has to pretend that everything is fine.
"Lather and Nothing Else" is a short story by Hernando Tellez. It is set in Colombia during a civil war. The narrator of the story is not only a barber, but also a revolutionary. One day, a captain comes in to be shaved by the narrator. That man was responsible for the horrific killing and mutilation of four rebels.
The narrator is extremely nervous about the man's presence in his shop. After all, even if he is a client, he is also the enemy.
That is what the line below shows:
"I lifted the brush, and feigning casual unconcern, asked, 'Firing Squad?'"
The narrator is pretending to be unconcerned, but he is, in reality, disoriented and even shaking.
Therefore, In "Lather and Nothing Else," the line "feigning casual unconcern" reveals the following about the narrator's feelings.
Learn more about the topic here:
brainly.com/question/23341826
#SPJ7
A reaction was found to be zero order in a. Increasing the concentration of a by a factor of 3 will cause the reaction rate to.
Answer:
Where is the choicesExplanation:
please send it in comment sectionAll of the following duties are responsibilities of county government officials except __________.
Answer: regulating public service corporations
Explanation: due to it being public
AAHHHH so guilty........................... comment/ answer
I love y’all so literally here’s 100 points
glad to help :))))
0
00
000
0000
00000
000000
0000000
00000000
000000000
0000000000
000000000
00000000
0000000
000000
00000
0000
000
00
0
When you add hot water to cold water the cold water warms up because of
Okay this is like Science or Chemistery, probably Sience
Answer:
So say you have some cold water running, if you turn on the hot water than the hot water will start coming too. The energy of the hot water will start warming up the cold water.
Explanation:
I don't really know, just tossing reasonable stuff out here.
The new clients are not responding to our product the way we had hoped. - frankly, i’m hardly with last month’s sales.
Based on the information given, it can be noted that the word that will accurately fit into the sentence will be "beside myself".
Based on the complete information, it should be noted that one cannot use cloud nine, over the moon, or down in the dumps as they do not fit accurately into the sentence.
Therefore, the correct sentence will be that the new clients are not responding to our product the way we had hoped. Frankly, i’m hardly beside myself with last month’s sales.
Learn more about phrase on:
https://brainly.com/question/13603772
Read the passage from when birds get flu and cows go mad! by john diconsiglio. Perhaps the best news about mad cow is that people do not catch it easily. Chances are, millions of people have eaten infected beef. But, for reasons scientists still do not understand, only about 150 people have gotten vcjd and died from it. The tone of the passage is anxious. Excited. Reassuring. Unhappy.
Answer:
anxious
Explanation:
that's that I think at least
The tone of the passage is Reassuring. Check more about tone below.
What does reassuring means?The term reassuring is one that means to restore hope or confidence in a particular thing or outcome.
Conclusively, Note that in the text, The tone of the passage is Reassuring. because the author stated that "the best news about mad cow is that people do not catch it easily", therefore assuring the people.
Learn more about tone from
https://brainly.com/question/15447799
#SPJ2
Food that has been prepared or handled should never be placed on the salesfloor before it has been.
Food that has been prepared or handled should never be placed on the sales floor before it has been properly chilled to ensure the internal temperature is 10° (51°F) or less. It is important to avoid contamination.
It is important to have into account that the higher the temperatures; the faster food will decompose.
Pathogenic microorganisms (such as fungi and bacteria) can reproduce and grow at temperatures as low as 40°F.
The foods may deteriorate even in absence of noticeable modifications in odor, appearance and/or taste.
Learn more about food contamination here:
https://brainly.com/question/22173814
A cart with an unknown mass is at rest on one side of a track. A student must find the mass of the cart by using newton’s second law. The student attaches a force probe to the cart and pulls it while keeping the force constant. A motion detector rests on the opposite end of the track to record the acceleration of the cart as it is pulled. The student uses the measured force and acceleration values and determines that the cart’s mass is 0. 4kg. When placed on a balance, the cart’s mass is found to be 0. 5kg. Which of the following could explain the difference in mass?.
Answer:
The track was not level and was tilted slightly downward.
Explanation:
The track was not level and was tilted slightly downward.
Which of the following costs are relevant to a make-or-buy decision?.
Answer:
im not sure thanks
Explanation:
Which change will decrease the electric force between two positively charged objects?.
Alissa works for a wireless company, and she prides herself on the fact that her job duties help keep the emergency service phone line operating, which ultimately saves lives. Alissa’s sentiment reflects.
Considering the situation described above, Alissa’s sentiment reflects task significance.
What is Task Significance?Task Significance is the mental perception in which individuals consider their work view as significantly influencing other people's lives both within and outside the company.
How Task Significance is Applicable hereGiven that Alissa believes that her job duties help keep the emergency service phone line operating, this is an example of the Task Significance phenomenon.
Hence, in this case, it is concluded that the correct answer is "Task Significance."
Learn more about the Task Significance here: https://brainly.com/question/4636198
how can you help someone believe in themselves again and please explain you answer
What is the speaker’s mood in this excerpt? unhappy playful childish determined.
Answer: playful
Explanation:
The speaker’s mood in the given excerpt is playful. Thus, the correct option for this question is B.
What is Speaker's mood?The speaker's mood may be defined as the mood of a character in a story is the attitude of the character towards a situation of another character. The speaker's mood is the general feeling or atmosphere that a piece of writing creates within the reader.
In the given excerpt from "Mending Wall," the speaker has a playful mood towards his neighbor and the situation where he was asked to build a wall, and he doesn't understand what is the point. To express his point of view he asks questions and has a playful attitude.
Therefore, the speaker’s mood in the given excerpt is playful. Thus, the correct option for this question is B.
To learn more about the Mood of the speaker, refer to the link:
https://brainly.com/question/24519464
#SPJ2
Your question seems incomplete. The most probable complete question is as follows:
Read the excerpt from "Mending Wall." Spring is the mischief in me, and I wonder If I could put a notion in his head: “Why do they make good neighbors? Isn’t it Where there are cows? But here there are no cows. Before I built a wall I’d ask to know What I was walling in or walling out, And to whom I was like to give offense. Something there is that doesn’t love a wall, That wants it down.” I could say “Elves” to him, But it’s not elves exactly, and I’d rather He said it for himself. What is the speaker’s mood in this excerpt?
unhappyplayful childish determined.Two customers took out loans from a bank. • henry took out a 4-year loan for $5,000 and paid 4. 2% annual simple interest. • ingrid took out a 6-year loan for $5,000 and paid 3. 9% annual simple interest. What is the difference between the amounts of interest henry and ingrid paid for their loans?.
Explanation:
Step-by-step explanation:
The formula for determining simple interest is expressed as
I = PRT/100
Where
I represents interest paid on the loan.
P represents the principal or amount taken as loan
R represents interest rate
T represents the duration of the loan in years.
Considering Henry's loan,
P = 5000
R = 4.2
T = 4 years
I = (5000 × 4.2 × 4)/100 = $840
Considering Ingrid's loan,
P = 5000
R = 3.9
T = 6 years
I = (5000 × 3.9 × 6)/100 = $1170
The difference between the amounts of interest Henry and Ingrid paid for their loans is
1170 - 840 = $330