A 2-pound box of spaghetti costs $2.50. Philip says that the unit cost is 2 over 250 = $0.80 per pound. Explain his error

Answers

Answer 1

Answer: Phillip forgot to put a period between 2 and 50

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A culture is grown with a population of 45 million cells. The cell population is found to double every hour. What will the population be after four hours?

Answers

45 million * $2^(4)$ = 45million * 16 = 720million

Or you can use
$y=Ae^(kt)$
A is equal to 45 million
To find the rate, k, we can plug in:
$90million=45million*e^(k*1)$
$2=e^(k)$
$k=ln(2)$
$y=4.5*10^(7)*e^(t *ln2)$
Knowing that t = 4
$y = 4.5*10^(7)*e^(ln(2)*4)$
$y = 720 million$

The population will be 360 million people after four hours

A family spends 1/10 of its annual income for housing, 1/4 for food and clothes, 1/5 for general expenses, and 2/15 for entertainment. What fractional part of their income is spent on these items altogether? A. 1/7
B. 6/41
C. 41/60
D. 11/12

Answers

Add all the fractions together:
to do this find the lcd:
which is 60
1/10 = 6/60
1/4= 15/60
1/5= 12/60
2/15= 8/60
add them together
(6+15+12+8)/60
41/60 or C is the answer

C is the right answer
Thank you

Emma found a 4% interest rate for a $2750 loan for a 3-year term. Blake found the same 4% interest rate on a $2750 loan for a 5-year term. How much more interest will Blake pay on the $2750 loan with the longer term?

Answers

blake will pay 220 more than emma

the radius and height of a cylinder are in the ratio 5:7.if it's volume is 4400cm cube, find the radius of the cylinder

Answers

V of cylinder= πr2h ...4400= 22/7×5X2×7x. . , x=8 . . . R = 5×8. . R=40

The calculation of property tax is based on the

Answers

The property tax is typically based on how much the property was worth when it was bought. so if your sales price was 130,000 it would go up by whatever the percentage is that is in that state or even county.

The formula for the perimeter of a rectangle is p=2l 2w. solve for w. w=p−2l/2 w=2p/l w=p 2l w=2p−l

Answers

$p=2l+2w\ \ \ \ \ |subtract\ 2l\ from\ both\ sides\n\n2w=p-2l\ \ \ \ |divide\ both\ sides\ by\ 2\n\n\boxed{w=(p-2l)/(2)}$

Answer:

w=p/2-l

Step-by-step explanation:

I am in k-12 and got 100% on this quiz

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