Calculate the average density of the unknown liquid.

Answers

Answer 1

Answer:

Step-by-step explanation:

students did 30 years ago? 1) True 2) False

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Answer this pls.In a class there are 25 females and 70 males . If females avarage is 50 and boys avarage 70, find the mean of the entire class?

Answers

Answer:

the mean of the entire class is approximately 64.74.

Step-by-step explanation:
To find the mean of the entire class, we'll calculate the overall average by considering the total number of students and their average scores.

Total number of students = 25 (females) + 70 (males) = 95 students

Total score of females = 25 (females) * 50 (average score) = 1250

Total score of males = 70 (males) * 70 (average score) = 4900

Total score of the entire class = 1250 (females' total score) + 4900 (males' total score) = 6150

Mean of the entire class = Total score of the entire class / Total number of students = 6150 / 95 ≈ 64.74

So, the mean of the entire class is approximately 64.74.

Li needs 15 pieces of string each one half of an inch long. she cut a 6 inch piece of string into pieces that are one half of an inch long. how many more piece of string does she need?

Answers

6 times 2 is 12 and 15 minus 12 is 3 so three more pieces are needed.

If a borrower's monthly interest payment on an interest-only loan at an annual interest rate of 7.3% is $877, how much was the loan amount (rounded to the nearest hundred)?A. $120,100B. $100,300C. $144,200D. $134,200

Answers

Answer:

C. $144,200

Step-by-step explanation:

We have been given that a borrower's monthly interest payment on an interest-only loan at an annual interest rate of 7.3% is $877.

To find the loan amount, we will use simple interest formula.

$I=Prt$ , where,

I = Amount of interest,

P = Principal amount,

r = Annual interest rate in decimal form,

t = Time in years.

One month will be equal to 1/12 year.

$7.3\%=(7.3)/(100)=0.073$

Upon substituting our given values in simple interest formula, we will get:

$877=P*0.073*(1)/(12)$

$877*12=P*0.073*(1)/(12)*12$

$10524=P*0.073$

$P*0.073=10524$

$(P*0.073)/(0.073)=(10524)/(0.073)$

$P=144164.3835616438356$

Upon rounding to nearest hundred, we will get:

$P\approx 144,200$

Therefore, the loan amount was $144,200 and option C is the correct choice.

What value of x will make 4x-1=4x+7 true ?

Answers

$4x-1=4x+7$

$-1=7$ $\ Cancel \ 4x \ on \ both\ sides.$

$\ No \ Solution$

1.2x-4y=28 solve for y

Answers

2x -4y= 28
⇒ -4y= 28 -2x
⇒ y= (28 -2x)/ (-4)
⇒ y= 28/(-4) -(2x)/ (-4)
⇒ y= -7 + 1/2x

The final answer is y= -7 + 1/2x~

Final answer:

To solve for y in the equation 1.2x - 4y = 28, subtract 1.2x from both sides, divide both sides by -4, and simplify to get the solution y = -7 + 0.3x.