You work as a lab assistant. Each morning you are responsible for grouping the correct number of test tubes for each experiment that will be conducted that day. Today 40 test tubes will be used for 12 experiments. The first two experiments will require 4 test tubes each. Six of the experiments will require 3 test tubes each, and 2 of the experiments will require 2 test tubes each. Each of the two remaining experiments will use exactly the same number of test tubes.


Which calculation is appropriate to perform first when determining the number of test tubes that will be used for each of the two remaining experiments?

A) 10/2

B) 40 − 30

C) 40 − 12

D) 2(4) + 6(3) + 2(2)

Answers

Answer 1

Answer:  D

Step-by-step explanation:

In total 40 test tubes are required for 12 experiments.

The first two experiments will require 4 test tubes for each.

Hence, there will be a requirement of  = 8 test tubes.

Six experiments require 3 test tubes each.

Hence, these 6 experiments will take  18 test tubes.

Other 2 experiments will take 2 test tubes.

Here,  = 4 test tubes will be required.

Till now a total of (8 + 18 + 4) = 30 test tubes have been used.

The remaining number of test tubes is (40 - 30) = 10.

The remaining experiments require  test tubes.

The first calculation to perform is 2(4) + 6(3) - 2(2).


Related Questions

Luisa ate 3 ounces of pretzels.

The pretzels she ate contained
grams of protein.

Answers

Luisa ate 8.79 grams of protein

do mind if you put the answers to that box where you can pick a word?

and then i well help you as much as i can

Which is enough information to prove that u parallel to v? Lines u and v are cut by transversal t. Clockwise from top left, the angles formed by t and u are 1, 2, 3, 4; formed by v and t are 5, 6, 7, 8. Angle 2 is congruent to angle 4 Angle 4 is congruent to angle 8 Angle 6 + angle 7 = 180 degrees Angle 3 + angle 4 = 180 degrees

Answers

Answer:

b

Step-by-step explanation:

edg

Angle 4 is congruent to angle 8. This is enough information to prove that 'u' parallel to 'v'.

What are parallel lines?

For a pair of lines, the perpendicular distance is equal at every point, then the pair of lines are called parallel lines.

The given information are:

1. Angle 2 is congruent to angle 4.

Angle 2 and Angle 4 are opposite angles. They are always equal.

This information does not prove that 'u' parallel to 'v'.

2. Angle 4 is congruent to angle 8.

Angle 4 and Angle 8 are corresponding angles.

This information proves that 'u' parallel to 'v'.

Angle 6 + angle 7 = 180 degrees.

The sum of the angle 6 and angle 7 are always 180 degrees.

This information does not prove that 'u' parallel to 'v'.

Angle 3 + angle 4 = 180 degrees

The sum of the angle 6 and angle 7 are always 180 degrees.

This information does not prove that 'u' parallel to 'v'.

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PLZZ HELP THIS DUE TODAY AND I STRESSING OUT PLEASE SOMEONE HELP PLZ DON'T SPAM PLZ THS DUE RIGHT NOW PLZZ!!!
1. What two directions could point B be located related to point A? Write two equations to represent the possible locations of point B or in other words, how did you travel to point B. Make a conclusion about the sums in relation to the integers in the equations on the next slide.

2. Explain How you could use absolute value to show that -4+3 and 3+(-4) have the same value. Which property of addition states that these sums are equivalent?


3. You know that the sum of -5 and another integer is a positive integer. What an you conclude about the sign of the other integer? What can you conclude about the value of the other integer?Explain.

4. Jim is standing beside a pool. He drips a weight from 4 feet above the surface of the water in the pool. The weight travels a total distance of 12 feet down before landing on the bottom of the pool. Explain how you can write a sum of integers to find the depth of water.

Answers

Answer:

1 im not 100% on this one but b could be a horizontal reflection or a vs vertical reflection

2 The absolute value of a number is its distance from zero on the number line. Therefore, -4+3 is 4+3, and the absolute value of 3+(-4) is also 4+3.

Step-by-step explanation:

2 The absolute value of a number is its distance from zero on the number line.  Therefore, the absolute value of 3 is 3, and the absolute value of -3 is also 3.  A positive number and its negative have the same absolute value.  It is symbolized as |x|, and |-x| has the same value.

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Horizontal reflection

Find the value of x in the triangle below.

Answers

Answer:

x = 50°

Step-by-step explanation:

Sum of Angles in a Triangle: 180°

All angles in a triangle must add up to 180°.

Step 1: Set up equation

x + 70° + 60° = 180°

Step 2: Solve for x

Combine like terms: x + 130° = 180°Subtract 130 on both sides: x = 50°

Answer:

50°

Step-by-step explanation:

Step 1:

x + 70° + 60° = 180°       Sum of a Δ

Step 2:

x + 130° = 180°         Combine Like Terms

Step 3:

x = 180° - 130°       Subtract 130° on both sides

Answer:

x = 50°

Hope This Helps :)

What is the total surface area of the right regular pyramid with a square base?

Answers

Answer:

106ft by 2

Step-by-step explanation:

Answer:

106 ft

Step-by-step explanation:

please help as soon as you know it the answer

Answers

Answer:

A

Step-by-step explanation:

When solving the inequality u have to sometimes change the sign it depends on the value of the number or answer.

HOPE THIS HELPS!

Which list shows all the factors of 28?

1, 4, 7, 28
1, 2, 4, 7, 14, 28
1, 2, 4, 6, 14, 28
1, 4, 6, 28

Answers

Answer:

Hope this helps

Also its the second one

Answer:1, 2, 4, 7, 14, 28

Step-by-step explanation:

You moved the decimals three places to the right when you "forgot" the decimals. How many places to the left should you move the decimal point in the answer?

Answers

Step-by-step explanation:

shouldnt it be 3

move the decimal 3 places

An amusement park’s goal is to sell 1 million tickets within the first four months of its being open.


How many more tickets does the park need to sell in Month 4 to reach this goal?

About how many tickets will the park need to sell in Month 4?

≈______ tickets.

Answers

Answer:

look at the explenation

Step-by-step explanation:

Hello! does it say how many have already been sold? if not then each month is 250,000 tickets

The amusement park needs to sell 250,000 more tickets in Month 4 to reach its goal of 1 million tickets in four months.

We can calculate the average number of tickets the amusement park needs to sell each month in order to determine how many more tickets they need to sell in Month 4 in order to meet their target of selling 1 million tickets within the first four months.

1,000,000 tickets ÷ 4 months = 250,000 tickets per month

250,000 tickets per month × 3 months = 750,000 tickets sold in the first three months

1,000,000 tickets goal - 750,000 tickets sold = 250,000 more tickets needed in Month 4

To reach its objective of selling 1 million tickets within the first four months, the theme park needs to sell 250,000 more tickets in Month 4.

average monthly target ≈ 250,000 tickets.

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Which diagram best shows how fraction bars can be used to evaluate One-half divided by one-fourth? is it the first second third or fourth pic first gets brainlyest

Answers

Answer:

the first one

Step-by-step explanation:

it is the first one it's the only one that makes sense

the first one because it is the only one that goes in order from top to bottom(greatest to least.

The value of y varies directly with x. When y=2 2/5, x=3/5.
What is the value of y when x is 4/5?

A. 1 2/5

B. 3 3/5

C. 3 1/5

D. 5 1/5

Answers

You answer most likely be C
It is probably C because x is x aksjnskajxnaksjjakss

Use the data in the table to find the rate of change in the length of baby girl Grace. (2 points)

Answers

Answer: Baby Girl Grace grows 3/4 inch every month.

Step-by-step explanation:

Y= (y_2 - y_1)/ (x_2 - x_1)

Y= (29-26)/(16-12)

Y= (3/4)

The rate of change of height of baby girl is 0.75 inches per month.

What is Rate of change?

A value that results from dividing the change in a function of a variable by the change in the variable velocity is the rate of change in distance with respect to time.

Here, from the given table;

At 4th month,               the length of baby girl = 20 inches

at  30th month,             the length of baby girl = 39.5 inches

x₁ = 4,        y₁ = 20

x₂ = 30      y₂ = 39.5

Now,

Rate of change of height = (y₂-y₁) / (x₂ - x₁)

                                           = (39.5 - 20) / (30 - 4)

                                           = 19.5 / 26

                                           = 0.75

Thus, the rate of change of height of baby girl is 0.75 inches per month.

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Please help me this is part of my grade and its really important! I’m very serious i dont want people answering nothing for points- i really need help. PLEASE give me right answers :(

Answers

Answer:

Step-by-step explanation:

74,000,000 = 7.4x10^7

.0000625 = 6.25x10^-5

18,000 = 1.8x10^4

.00009 = 9x10^-5

3,728,000 = 3.728x10^6

.0011 = 1.1x10^-3

Answer:

A. 7.4*10 to the 7th power

B. 6.25*10 to the -5th power

C. 1.8*10 to the 4th power

D. 9*10 to the -5th power

E. 3.728*10 to the 6th power

F. 1.1*10 to the -3th power

Step-by-step explanation:

The graph below represents the height of a golf ball in feet as a function of the elapsed time since it was hit. The golf ball was in the air for 4 seconds.
What are the domain and range of the representative function?
A)Domain: 0 ≤ x ≤ 4
Range: 0 ≤ y ≤ 80
B)Domain: 0 < x < 80
Range: 0 < y < 4
C)Domain: 0 < x < 4
Range: 0 < y < 80
D)Domain: 0 ≤ x ≤ 80
Range: 0 ≤ y ≤ 4

Answers

Answer:

It´s A

Step-by-step explanation:

You can eliminate B and D because the ¨x¨  would be 4 not 80 because it´s on the x-axis not on the y-axis. Secondly whenever you have a graph you need to have the less than or equal to sign with the line under.

Hope this helps :)

The domain and range of the representative function should be option A. Domain: 0 ≤ x ≤ 4

Range: 0 ≤ y ≤ 80

What are domain and range?

The domain of a function represent the set of values that should be permitted for putting into the function. In this set, the x values in the function like f(x). Here the range of the function represent the amount set where the function should be presumed.

Therefore, based on the given graph the correct option is A.

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Solve
13-4x -6
Thank you

Answers

Answer: 7-4x

Step-by-step explanation:

The answer is 7-4x. How to solve this is since there is no equal sign you do not have to do the opposite property to get the answer. All you you is subtract 13-6 because they do not have any variable and 4x has a variable. Then you get 7-4x. I hope this helped

Which of the following tables of values represent ordered pairs for the function f(x) = 2x – 1?


x 3 6 9 12
f(x) 6 12 18 24

x 2 4 6 8
f(x) 5 9 13 17

x 1 2 3 4
f(x) 1 3 13 17

x 0 4 8 12
f(x) -1 7 15 23

Answers

The answer is A because x = 1/2 meaning that X is always going to be half of Y

Write the reciprocal of the following numbers.



7 over 10

Answers

Answer: - 10 over 7

Step-by-step explanation:

Answer:

when you reciprocate 7/10 it becomes 10/7

There are some nickels, dimes, and quarters in a large piggy bank. For every 2 nickels there are 3 dimes. For every 2 dimes there are 5 quarters. There are 500 coins total.

1.) How many nickels, dimes, and quarters are in the piggy bank? Explain your reasoning.

2.)How much are the coins in the piggy bank worth?

Answers

Answer:

1) 100 dimes, 150 nickels, 250 quarters.

2) $80

Step-by-step explanation:

Here is the pic for the question, please respond.

Answers

1 gig= $4 each gigabyte costs 4 dollars
1 gig=$4 so 4 dollars

Julio bought 3/5 pound of potato salad for dinner. Wilma bought 5/4 the amount of potato salad that Julio did. How much potato salad did Wilma buy?

Answers

1/5 I think but I’m not sure

Answer:

1/5

Step-by-step explanation:

GOOD LUCK :3

Pls help I have a lot to do and it’s all due today

Answers

Answer:

C = 9

Step-by-step explanation:

:>

Answer: 45

Step-by-step explanation:

-43+51 rlly need help

Answers

Answer:

8

Step-by-step explanation:

can i have branliest?

Answer:8

Step-by-step explanation:If there is a -43 you just minus and ignore the +

Find the equation of the line USE EXACT NUMBERS
Y=____ X+____

Answers

Answer:

Slope: rise/run

          = 5/5

          = 1

Y-intercept:  -5

SLOPE INTERCEPT FORM:

y = 1x-5

The equation of line is y = 1 x + ( -5 )

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept.

And y - y₁ = m ( x - x₁ )

y = y coordinate of second point

y₁ = y coordinate of point one

m = slope

x = x coordinate of second point

x₁ = x coordinate of point one

Given data ,

y intercept b = - 5

Slope m = Rise / Run

              = 5 / 5

              = 1

The equation of line is y = mx + b

Therefore , y = x - 5

Hence , the equation of line is y = 1 x + ( -5 )

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Which best represents the square root of 361

Group of answer choices

-19 and 19

-18 and 18


1 and 361

4 and 64
PLZZ will give brainlist to the first

Answers

Answer:

Its a,c but they did it first

Step-by-step explanation:

The adult skeleton consists of 206 bones. There are 28 bones in the skull and 30 bones in the arms and legs. Out of the 28 skull bones, 14 are facial bones, 6 are ear bones and 8 are cranial bones. How many more bones are there in the arms and legs than in the face?

Answers

Answer:

16 more bones are in the arms and legs than in the face.

Step-by-step explanation:

30 - 14 = 16

16 more bones are in arms then legs

At Thanksgiving, Mrs. Jones overcooked the turkey so all but StartFraction 4 Over 5 EndFraction of it had to be thrown away. The 8 people at dinner that night each received an equal share of the remaining turkey. To determine the amount of the turkey that each person would receive, Mrs. Jones wrote the expression below.

StartFraction 4 Over 5 EndFraction divided by 8

Which expression is equivalent to Mrs Jones’s expression?
StartFraction 8 Over 10 EndFraction divided by 8
StartFraction 8 Over 5 EndFraction divided by 4
StartFraction 5 Over 4 EndFraction times 8
StartFraction 4 Over 5 EndFraction times 8

Answers

Answer:8/10

Step-by-step explanation: 4/5 times 2 is 8/10 so they equal the same thing

Answer:

8/10

Step-by-step explanation:

A corn vendor at a farmer's market was selling a bag of 8 ears of corn for $2.56. Another vendor was selling a bag of 12 for $4.32. Which bag is the better deal? Explain or show your reasoning.

Answers

The first one because if you are attempting to get the same amount of corn from both bags you can get 16 ears of corn for only a few more cents than the bag of 12. Let me know if this helps!
First one because if you cut it down you can get 12 corn for a dollar less.

HELP!!! WILL MARK BRAINLIEST!

John increased the amount of water he drinks every day from 20 fluid ounces to 48 fluid ounces. By what percentages did John increases the water he drinks?

Answers

Answer:

240%

Step-by-step explanation:

48/20 = 2.4 = 240%

Answer: Its 140%

pls mark brainlist if you do it :3

The questions are on the pictures ( I’m sorry there are so much pictures I couldn’t make the page smaller) :(

Answers

Answer:

9. A

10. D

11. True

Step-by-step explanation:

I might be incorrect sorry :(

Answer:

i think the person that answered first is correct

Step-by-step explanation:

how do you write this in standard notation?
4.9·10∧6

Answers

Answer:

49,00000

Step-by-step explanation:

Move the decimal to the right 6 places.

Other Questions
NO BEVERAGESARE ALLOWEDPASSEDTHIS POINT Read the passage below and answer the question.Hola! Me llamo Natalia. Soy de EE.UU. y vivo en Arizona con mi madre, mi padre y mis dos perros. Me gusta cantar, nadar y tocar el piano. Soy chicana porque soy americana y mexicana tambin. Hablo ingls y espaol y a veces hablo un poco de Spanglish. En la escuela estudio arte y msica. Me gusta la msica, especialmente la msica del Caribe: cubana, puertorriquea y dominicana. Deseo aprender a tocar las congas.Fsicamente soy una muchacha morena, baja y un poco gorda. Soy inteligente y muy simptica. En la escuela estudio mucho y saco buenas notas pero me gusta ms hablar con mis amigos. En casa, corro con mis perros, nado en la piscina y toco mi piano todos los das. Tambin ayudo a mis padres con los quehaceres, aunque no me gusta hacerlo. Mi vida es muy interesante!Natalia no es una buena estudiante.TrueFalse Ano ang ibig sabihin ng "para kang natuka ng ahas" One purpose of the executive branch is to A relocation of a short stretch of rural highway feeding into Route 390 northwest of Dallas is to be made to accommodate new growth. The existing road is now unsafe, and improving it is not an alternative. Alternate new route locations are designated as East and West. The initial investment by government highway agencies will be $3, 950,000 for East and $5, 500,000 for West. Annual highway maintenance costs will be $120,000 for East and 590,000 for the shorter location West. Relevant annual road user costs, considering vehicle operation, time end route, fuel, safety, mileage, and so on, are estimated as $880,000 for East and only $690,000 for West. Assume a 20 year service life and i = 7 %. C 1. What is the present worth of the benefits and costs of route West over route East? PW benefits of route West over route East: $ PW costs of route West over route East: $ Carry all interim calculations to 5 decimal places and then round your Final answer to the nearest dollar. The tolerance is plusminus 50. Using incremental D/C ratio analysis, which alternative should be selected? 2. Compute the appropriate B/C ratio(s) and decide whether East or West should be constructed. WhiWhich event contributes most to Jonathans conflict in the selection?ch event contributes most to Jonathans conflict in the selection? Which one is the correct equation for calculating density? *Density - Mass / VolumeDensity - Mass / WeightDensity - Volume / MassDensity = Volume / Weight There are 5 boys for every 6 girls.How many boys would there be if there were 36 girls? Helen Keller wrote this most likely to PLEASE HELP WILL MARK BRAINLIEST What is the FDA's definition of its natural food label?produced by small farmers who emphasize conservation of soil and water to enhance environmental quality for future generationsproduced by farmers who emphasize the use of renewable resourcesminimally processed and free of artificial ingredients, preservatives, and other unnaturally occurring chemicalsmust be raw, unprocessed, contain no preservatives, or never have been frozen or heated Evaluate the function, f(x) = 3x + 1, for f -2/337-1-5/9 use a number line to solve the sum 2+5 a. Fethe's Funny Hats is considering selling trademarked, orange-haired curly wigs for University of Tennessee football games. The purchase cost for a 2-year franchise to sell the wigs is $20,000. If demand is good (40% probability), then the net cash flows will be $27,000 per year for 2 years. If demand is bad (60% probability), then the net cash flows will be $6,000 per year for 2 years. Fethe's cost of capital is 13%. What is the expected NPV of the project?b. If Fethe makes the investment today, then it will have the option to renew the franchise fee for 2 more years at the end of Year 2 for an additional payment of $20,000. In this case, the cash flows that occurred in Years 1 and 2 will be repeated (so if demand was good in Years 1 and 2, it will continue to be good in Years 3 and 4). Write out the decision tree. Note: The franchise fee payment at the end of Year 2 is known, so it should be discounted at the risk-free rate, which is 4%. Use decision-tree analysis to calculate the expected NPV. liniar systems3x-2y=-72x+5y+=8 What is the value of the expression below?(9 divided by 3) + 4 (6 minus 7)71720 2.(03.01)The range of the following relation R {(3,-2), (1, 2), (-1,-4), (-1, 2)} is (1 point)O {-1, 1, 3}O {-1,-1, 1, 3}O {-4, -2, 2, 2)O {-4, -2, 2}I will mark as brainliest Which type of tort happens when you unfairly damage another company's reputation?A.FraudB.ConflictC.InterferenceD.DefamationPlease select the best answer from the choices providedABCD WILL GIVE BRAINLESTWild Plum JellyTracy Wilson1 In the winter of 1976, when I was only four years old, my family moved into a modest home in a growing Greenville neighborhood. Upon a slope on one side of the house, stood a dozen tree sprigs looking rather bald and barren. By springtime, however, the little trees began growing taller and bushier by the day. Upon exploring the hillside in mid-July, I noticed hundreds of quarter-sized, pinkish orbs dangling, daring me to pick just one. Of course, I did.2Plums? I questioned. Yes, plums. she reiterated. She explained that these were not the same as the deeply colored, voluptuous kind I had seen in the market. These were a smaller and much sourer variety.3 Knowing that they were safe, I ate enough that one afternoon to give me a stomach ache that lasted two days. As the plums became riper and sweeter, my grandma and I picked enough to fill two enormous buckets. She taught me to make jelly from the tiny fruits which we could enjoy all winter long.4 Years later, I was driving down a long, winding highway when I noticed several wild plum trees lining the hedgerow. I had to pull over. I picked a heaping handful. As I sat there on the side of the highway, I basked in the tartness of my childhood fruit and in the sweetness of the memory of making jelly with the greatest woman I have ever known.Read the passage on the left to answer the following questions:7) Wild Plum Jelly (Another Point of View)When Tracy was just a little girl, maybe four years old, she came to visit my home just around the time my wild plum tree was bearing fruit. The plums were pinkish little spheres just begging for Tracy's little hands to pick them. When she grabbed one, I explained to her that the plums were edible and safe, but that they didn't taste like the rich, delicious plums at the grocery store. They were a little sour!But their sour taste didn't stop little Tracy at all. She ate so many plums that she got a stomach-ache! Mercy! After she got better, I taught Tracy to make wild plum jellies. I hope that one day she can remember the good times we had together when she was young.What do these two accounts of an early event in Tracy's life have in common?A) Tracy's story is tinted with a tone of sadness, but the grandmother's story is mostly happy in tone. B) The grandmother's story mentions that they picked apples instead of plum, but Tracy's story mentions only plums. C) Tracy's story is a memory of picking plums with her grandmother, and the grandmother's story is a similarly happy memory. D) The grandmother's story shows that she didn't enjoy picking plums, but Tracy's account shows that she had a really good time. 8) Which text structure BEST describes how the author has organized the passage?A) sequential B) cause and effect C) compare and contrast D) problem and solution What was the first governing document of the United States following the American Revolution called?A. Articles of ConfederationB. Confederate ConstitutionC. Confederation ArticlesD. Articles of Impeachment Ais a reference book that contains information about the pronunciation of words.encyclopediaatlasdictionary