Samantha has an unlimited supply of a solution with a concentration of 21 g/ml.

Using the Formula C1×V1 = C2×V2 to answer the following questions

Round answers to the nearest 10th.

How many liters of 21 g/ml does Samantha need to equals the amount of soluble in the given solution?

(Concentration times Volume = grams of soluble, like salt)

Answer:

**Answer:**

76.7 liters

**Step-by-step explanation:**

You have ...

C1×V1 = C2×V2

so ...

V2 = V1×(C1/C2) = (115 L)×(14/21) = 76 2/3 L

V2 ≈ **76.7 L**

Idk how to solve this find value of x and y

Q1: A group of 50 biomedical students recorded their pulses rates by counting the number of beats for 60 seconds. (15)804888708482668482644472907086104588472609010862527286661047882965468767288102746874786672906210092847672(a) Construct frequency distribution.(b) Compute mode, median and mean of the frequency distribution.(c) The lower and upper quartile of the frequency distribution.

Which is an example of a situation that is in equilibrium?A. The amount of air in a room increases quickly when the door isopened.B. The amount of money in a bank account never changesC. The amount of water in a cup decreases as it evaporatesD. A flower slowly grows taller

Kjsdfjyrbasdhviurhasiudhvr = ?

8x + 4y= 12 2x+ y= 3

Q1: A group of 50 biomedical students recorded their pulses rates by counting the number of beats for 60 seconds. (15)804888708482668482644472907086104588472609010862527286661047882965468767288102746874786672906210092847672(a) Construct frequency distribution.(b) Compute mode, median and mean of the frequency distribution.(c) The lower and upper quartile of the frequency distribution.

Which is an example of a situation that is in equilibrium?A. The amount of air in a room increases quickly when the door isopened.B. The amount of money in a bank account never changesC. The amount of water in a cup decreases as it evaporatesD. A flower slowly grows taller

Kjsdfjyrbasdhviurhasiudhvr = ?

8x + 4y= 12 2x+ y= 3

120+(XN)= 300

this should be the correct answer

BRAINLIEST PLEASE

x= pages read per day

n= number of days

this should be the correct answer

BRAINLIEST PLEASE

x= pages read per day

n= number of days

**Answer:**

please dont blame me if i get this wrong this is what i put.

**Step-by-step explanation:**

Using the following 3 equations, answer the questions:

11x + y =4, x+y = -2, x - 2y = 18

How can you determine which equations can be graphed more easily using x- and y-intercepts, rewriting in slope-intercept form, or using a table of values?

you can determin which is eiser to graph by wether or not they have numbers infront of the x and y intercepts. i find it mutch eiser if they allready have the numbers there. its also eiser to graph 11x + y =4 and x - 2y =18 on a slope intercept rather than table of values because you allready can find the points for those two eiser than the last one which would be used on the table of values. for the problem x+y=-2 you would use x and y intercepts. for 11x+y=4, rewriting in slope form is the corect method to use. and finaly use the table of values method for x-2y=18.

Which method works best for you personally? When does it not work as well?

the one that i find works best for me personally is probably gonna be the slope intercept method as apposed to many other methods. it doesnt work all the time because nothing can but normaly when i have a problem with this method i can just go to the table of values method and get the answer. (sorry if this is wrong this is what im putting for my answer. dont copy and paste this though if u do desiede to use it, read it and turn it into your own words so its not obvious you found the answer on the internet. and tbh i didnt read the lesson i just am ok at comming up with answers useing the question and getting away with it. )

**Answer:**

5r^2+2

**Step-by-step explanation:**

(4r^2 – 3r + 2) – (-r^2 – 3r) =

Distribute the minus sign

(4r^2 – 3r + 2) +r^2 + 3r =

Combine like terms

(4r^2 + r^2 – 3r+ 3r + 2) =

5r^2+2

HURRY

Divide 15 by 20

15 divided by 20 is 75%

15 divided by 20 is 75%

To calculate the percentage of incorrect answers, subtract the correct answers from the **total amount, **resulting in 5 incorrect answers. Then divide the incorrect answers by the total problems, multiplied by 100, giving us 25% incorrect.

The subject is the calculation of **percentages**, specifically determining what percent of the test problems a student got incorrect. To find the answer, first subtract the number of problems the student got correct (15) from the total number of problems on the test (20). This gives you 5 incorrect answers. Then, to convert this number into a percentage, divide the number of incorrect problems (5) by the total number of problems (20) and multiply by 100. This gives an answer of 25%. So, the student got 25% incorrect on the test.

#SPJ11

**Answer:**

If an amount is included as a "Gratuity" or "Service Charge," tipping is not required. ... If the tip is included, the breakdown of the bill will read "gratuity" or "service charge," which means that a tip is already included.

**Step-by-step explanation:**

hope this helps!

**Step-by-step explanation:**

−2x+5y=−15 and 5x+2y=−6

Rewrite equations:

−2x+5y=−15;5x+2y=−6

Step: Solve−2x+5y=−15for x:

−2x+5y=−15

−2x+5y+−5y=−15+−5y(Add -5y to both sides)

−2x=−5y−15

−2x−2=−5y−15−2(Divide both sides by -2)

x=52y+152

Step: Substitute52y+152forxin5x+2y=−6:

5x+2y=−6

5(52y+152)+2y=−6

292y+752=−6(Simplify both sides of the equation)

292y+752+−752=−6+−752(Add (-75)/2 to both sides)

292y=−872

292y292=−872292(Divide both sides by 29/2)

y=−3

Step: Substitute−3foryinx=52y+152:

x=52y+152

x=52(−3)+152

x=0(Simplify both sides of the equation)

Answer:

x=0 and y=−3