9. YOU BE THE TEACHER Your friend
says 9 divided by 2.5 is about 3. Is your friend's
estimate reasonable? Explain.

Answers

Answer 1

Answer:

Step-by-step explanation:

Yes, it's reasonable.

What you are doing is solving the question by rounding. You come up with an answer. Suppose you loose the decimal somewhere and you get 0.36? Is that reasonable? Do you just write the answer in the provided blank and move on. What now?

You get it wrong?!!

But your estimate should be about 9/3 = 3. Now you look at your calculator with great misgivings, because it made a mistake. Did it or did you? Well ultimately you did, but you have to blame something. So the calculator takes the heat.

Who  knows? Maybe the decimal doesn't work. It's stuck or something. In any event you should be aware that there's no way the answer could be 0.36 when you estimate it to be 3.


Related Questions

What is the slope of the line graphed on the coordinate plane?

A graph with a line running through coordinates (-6, -1) and coordinates (6, 2)

Answers

Answer:

1/4

Step-by-step explanation:

use the slope formula, (y2-y1)/(x2-x1) , or rise over run.

this would give you 2-(-1) divided by 6-(-6)

giving you 3/12, reducing to 1/4

35 devide 28 with decimals pls help I need help

Answers

The answer has to be 1.25 I might be wrong tho

Answer:

1.25

Step-by-step explanation:

28 * 1 = 28.  35 - 28 = 7.

Add a decimal after the 1 in your answer and after the 35 in your problem.  Add a zero to make your 7 into 70.  

28 * 2 = 56.  70 - 56 = 14

Add a zero to make your 14 into 140.  

28 * 5 = 140

3. If dy = x^2y^2 , then what is d2y/dx2

Answers

[tex]\text{Given that,}\\\\\dfrac{dy}{dx} = x^2 y^2\\\\ \implies \dfrac{d^2 y}{dx^2} = x^2\cdot 2y \dfrac{dy}{dx}+ y^2 \cdot 2x\\\\\implies \dfrac{d^2 y}{dx^2} = x^2 \cdot 2y \cdot x^2 y^2 +2xy^2\\\\\implies \dfrac{d^2 y}{dx^2} =2x^4y^3 + 2xy^2 = 2xy^2(x^3y+1)[/tex]

A ball is thrown from an initial height of 3 feet with an initial upward velocity of 37 fts. The ball's height h (in feet) after 1 seconds is given by the following.
h= 3+37t-16t^2
Find all values of t for which the ball's height is 23 feet.

Answers

Answer:

t=(37+root89)/32,(37-root89)/32

Step-by-step explanation:

Solve the equation:

23=3+37t-16t^2

Arrange the following numbers in increasing order.

2.3, 45.1, 18.735, 0.9862, 7

Answers

Step-by-step explanation:

1. 0.9862

2. 2.3

3. 7

4. 45.1

5. 18.735

Please help me with this. thank you. :)

Answers

Answer:

11,550

Step-by-step explanation:

1200- 675( because its descending) + 250 ( its ascending) - 525 = 11,550

Six points are plotted on the number line.



Which points on the number line are opposites?

Answers

Answer: P and U

Step-by-step explanation:

Simplify completely

(192x^12/3x^3)^1/3

Show all work for full credit

Answers

Answer and Explanation: The answer and explanation is in the image.

Trinity earns 8 dollars working at a local supermarket and 6 dollars per hour babysitting

Answers

Answer: so 14 dollars in total

Step-by-step explanation:

Answer: Based on the current non-complete question, the answer Trinity earned $14.

Step-by-step explanation: 8 + 6 = 14.

Please answer this mathematical problem.

Answers

x = total amount of gumballs

let's start subtracting the balls she's giving away

[tex]\stackrel{total}{x}-\stackrel{\textit{to jaysen}}{\cfrac{x}{2}}\implies \stackrel{\textit{what's left}}{\cfrac{x}{2}}~\hfill \stackrel{\textit{half of what's left to Marinda}}{\cfrac{~~ \frac{x}{2}~~}{2}\implies \cfrac{x}{4}} \\\\\\ \stackrel{\textit{what was left minus Marinda's}}{\cfrac{x}{2}-\cfrac{x}{4}\implies \stackrel{\textit{what's left}}{\cfrac{x}{4}}}~\hfill ~\hfill \stackrel{\textit{a third of what's left to Zack}}{\cfrac{~~ \frac{x}{4}~~}{3}\implies \cfrac{x}{12}}[/tex]

[tex]\stackrel{\textit{what was left minus Zack's}}{\cfrac{x}{4}-\cfrac{x}{12}\implies \stackrel{\textit{what's left}}{\cfrac{x}{6}}}~\hfill \stackrel{\textit{her sister gets 5 balls of what's left}}{ \cfrac{x}{6}-5 }[/tex]

and we also know that after all that has been subtracted, she's only left with 5, so we can say that

[tex]\stackrel{\textit{what's finally left}}{\cfrac{x}{6}-5}~~ = ~~\stackrel{\textit{what's finally left}}{5}\implies \cfrac{x}{6}=10\implies \boxed{x = 60}[/tex]

12*10-50 i am in a hurry

Answers

Answer: 70

Step-by-step explanation:

12*10 = 120-50 = 70

In the triangle below, which equation can
be used to solve for x?

Answers

The answer is B x=13sin75/sin50

Are the ratios 2:1 and 17:7 equivalent?

Answers

Answer:

no

Step-by-step explanation:

1 x 7 = 7 but 2 x 7 does not equal 17

If G&M Foods issues a $1,000 bond with an interest rate of 3.5 percent and a maturity date of January 1, 2025, G&M is agreeing to pay the bondholder __________ interest each year until January 1, 2025, when it must repay the full $1,000.

Answers

G&M is agreeing to pay the bondholder the interest amount of $35 each year until January 1, 2025.

Using this formula

Interest=Bond amount× Interest rate

Where:

Bond amount=$1,000

Interest rate=3.5% or 0.035

Let plug in the formula

Interest=$1,000×0.035

Interest=$35 each year

Inconclusion G&M is agreeing to pay the bondholder the interest amount of $35 each year until January 1, 2025.

Learn more about interest rate here:https://brainly.com/question/25545513

Need it now ‼️‼️‼️‼️will give brain list to who ever answers first

Answers

Answer:17/18

Step-by-step no explation

I need help
With this one question

Answers

Answer:

$88

Step-by-step explanation:

442.70 rounded to the nearest 10 dollars is 440.

20%= .2.

440 times .2 =

88

Kevin and Randy Muise have a jar containing 34 coins, all of which are either quarters or
nickels. The total value of the coins in the jar is $5.30. How many of each type of coin do
they have?

Answers

Answer:

20 quarters quarters 14 nickles

write the equation of the line with the given slope and y-intercept

1. slope is -3 and y intercept of 7

2. slope is 1/4 and y- intercept is -5

Answers

Answer:

See below

Step-by-step explanation:

Remember that y=mx+b:

1) y = -3x+7

2) y = 1/4x-5

How many factor pairs does 15 have

Answers

Answer:

It has a total of 4 the factors are 1,3,5, and 15

20.4 is what percent of 17?

Answers

Answer:

120%

Step-by-step explanation:

20.4 ÷ 17 = 1.2

1.2 · 100 = 120%

Please answer: The Maxwell children have hired a caterer to provide food for an anniversary party for their parents. The caterer has quoted a price of $96 per person and is asking for an advance payment of one-fourth of the total bill. If the advance payment is $1200, how many guests are invited to the party?

Answers

In the exercise Maxwell children want to calculate the estimated amount or budget placed on one person coming to the  anniversary party for their parents.

The number if guest will be 50 guests

Given data

quoted price = $96 per person

Let the total bill be x

one-fourth of the total bill = 1/4*x

advance payment is $1200 = 1/4x------------1

Let us find the total bill which is x

$1200 = 1/4x

cross multiply

1200*4 = x

x = 4800

if the budget per person is $96

Hence the total expected guest will be = 4800/96

50 guests

Learn more about algebra here :

https://brainly.com/question/6143254

Which explanation could be used to verify weather the functions are inverse

Answers

Answer:it is the second option

Step-by-step explanation:

neither of the lines are paralell to the y=x

Joel can do 20 math problems in 90 seconds How many seconds would it take him to do 32 problems?



HELP ME ITS SUPER HARD

Answers

Answer:

Joel can do 20 math problems in 90 seconds

He can do 1 math problem in 90/20 = 4.5 seconds

Now, Joel can do 32 math problems in

4.5×32

= 144 seconds

= 2 minutes 24 seconds

Step-by-step explanation:

Here I used the unitary method to sovle the question

given the function below, which of the following values will result in f(x)=10

f(x)=1/2x+8​

Answers

Answer: x=4

Step-by-step explanation:

1/2x+8=10

Subtract 8 from 10

Multiply 2 to 2

x=4

Step-by-step explanation:

1/2(10)+8=

1/20+8=

161/20=

8.05

PLEASE HELPPPP. I really need it

Answers

Answer:

Option 4: (0, 5]

Step-by-step explanation:

Given the inequality notation, 0 < x ≤ 5 :

Definitions:open- and closed-parenthesis "(  )"

We know that using the open- and closed-parenthesis, "(  )" are used to express interval notation for which the endpoints are not included as part of the solution.  Hence, the open- and closed-parenthesis are associated with the inequality symbols, less than (>) or greater than (<), as you do not include the endpoints when these inequality symbols are used.

open- and closed-brackets "[     ]"

In contrast, the open- and closed-brackets, "[     ]" are used to express interval notation for which the endpoints are included as part of the solution.  Hence, the open- and closed-parenthesis are associated with the inequality symbols, less than or equal to (), and greater than or equal to ().

Explanation:

In the inequality notation, 0 < x ≤ 5, the endpoints are 0 and 5.  

The inequality symbol between 0 and x is "<," which means that we must use an open parenthesis, " ( " for the endpoint, 0.

While the inequality symbol between x and 5 is "," which means that we must use an closed bracket, " ] " for the endpoint, 5.

Therefore, the correct answer is Option 4: (0, 5].

2. When 3 is added to the difference between seven times a number and 8, the result is greater than 13
added to 6 times the number. Write an inequality to match the given situation.
A. 7x + 8-3 < 6x + 13
B. 6x + 13 > (7x - 8) + 3
C. (7x-8) + 3 > 6x + 13
D. 6x + 13 < 7x + 8-3

Answers

Answer:

C

Step-by-step explanation:

The Greens bought a condo for $110,000 in 2005. If its value appreciates at 6%
per year, what will the value be in 2012?

Answers

Answer:

Use the A = p(1 + r/100)^t.  A is the amount after appreciation, p is the principal or starting value, r is the interest rate, and t is the time in years.

Step-by-step explanation:

Solve the following system of equations by substitution. *
8x + 5y = 24
y = -4x

Answers

Answer:

x= 19/4

Step-by-step explanation:

How many days are in 52 weeks?

Answers

Answer:

A year but -1.

Step-by-step explanation:

52x7=364.

Hope this helps!

Answer:

there are 364 days in 52 weeks.

Step-by-step explanation:

To find out how many days are in 52 weeks you have to multiply the amount of days there are in a week by 52, there are 7 days in a week and 7 times 52 is 364 so the answer is 364

Find the equation of the line passing
through the points (4, 2) and (6,10).
y = [ ? ]x + [ ]

Answers

Answer:

  y = 4x -14

Step-by-step explanation:

The required answer form is slope-intercept form, so we need the slope and the y-intercept of the line.

The slope equation is ...

  m = (y2 -y1)/(x2 -x1)

  m = (10 -2)/(6 -4) = 8/2 = 4

The y-intercept equation is ...

  b = y - mx

  b = 2 -4(4) = -14

The equation of the line is y = 4x -14.

Other Questions
SImplify: (2m)^5Please help if possible :) Logan walked 2 1/2 miles on Monday and she walked6 miles. How far did she walk on Tuesday? Which neutral atom is isoelectronic with N-3? The clouds of Venus consist mainly of ______. Group of answer choices carbon monoxide droplets of water vapor hydrogen and helium droplets of sulfuric acid gaseous nitrogen What was the grographic relationship between Soviet satellite and the iron curtain The movement of water across cellular membranes from a hypotonic to hypertonic environments through aquaporins, which are channel proteins, can be defined as bothA: simple diffusion and active transport.B: active transport and facilitated diffusion.C: osmosis and facilitated diffusion.D: endocytosis and active transport. 38. -() () () () Answer this please ONLY IF YOU KNOWWW Line k passes through the point (6, -7) and has a slope m= -1/2.Which is the equation of a line that is perpendicular to line k and passes through thepoint (-4, 9)? Which parts of a plant or animal contain the genetic information for characteristics like this? Hey yall pls help me. 7. What is the velocity of an object with a distance of 90m south and a time of5s? at a community college a survey was taken to determine where students study on campus. Of the 270 students surveyed, it was determined that 177 studied in the library , 142 studied in the cafeteria, 82 studied in both the library and the cafeteria. Of those students surveyed, how many studied only in the library? (text multiple choice) The Senate has senators. The House has representatives. The reader can tell from the article that __________.Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selectedA. Harger is probably not happy that Charles Buffum found the Revenge shipwreck.B. The Navy has never before decided to salvage the remains of a shipwreck.C. The role of the Great Lakes during the War of 1812 is not known by many historians.D. Buffum is probably happy that he read the book Shipwrecks on the Shores of Westerly. Is racism still an issue today? Why or why not? How can we solve this issue? according to the ryb color model, which pair of colors is complementary? what are the factors of Production? Easy questionA father is 35 years more than his sons age. After 5 years the fathers age will be twice of his sons age.Find the present age of both. Read these sentences from the first section of the article. Because of this novel characteristic which singles out Washington from other cities, coupled with the fact that the trees are now in full splendor, a short history of their appearance in the capital city is of interest. The first cherry trees were planted in Washington by Mrs. Taft's request on April 4, 1909, just a month after she first made her home in the White House: What is the most likely reason why Cobb includes these sentences in the first section? to establish himself as a credible authority on the topic of cherry trees ne CU o to state the central idea and begin the narrative of how the trees arrived in Washington, D.C. Is O to create a sensory image for readers who are not familiar with cherry trees to build suspense as to how so many cherry trees arrived in Washington, D.C. ay n Where is point E located?(2,0)(2,2)(0,2)(0,0)