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katen-ka-za [31]
3 years ago
15

The table shows the postal charges for sending letters to Country Y.

Mathematics
2 answers:
hodyreva [135]3 years ago
6 0

Answer:

$01.70

Step-by-step explanation:

victus00 [196]3 years ago
6 0

Answer:

it will cost 170 $ total ....

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The interest on $2,000 for 2 years is $320. What is the simple interest rate?
umka2103 [35]
R = 8%/year

Equation:
r = (1/t)(A/P - 1)
Calculation:
Solving our equation:
r = (1/2)((2320/2000) - 1) = 0.08
r = 0.08

Converting r decimal to R a percentage
R = 0.08 * 100 = 8%/year

The interest rate required to get a total amount, principal plus interest, of $2,320.00 from simple interest on a principal of $2,000.00 over 2 years is 8% per year.
7 0
3 years ago
80 miles in 2 hours ratio
Charra [1.4K]

80:2

80 divided by 2 ... which gets you 40. About 40 miles an hour.

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3 0
4 years ago
I'm a bit confused on what I'm supposed to be doing here, help would be much appreciated!
solmaris [256]

Answer:

  f(f(n)) = -n^4 -8n^2 -20

Step-by-step explanation:

As with any function evaluation, you substitute the argument for the variable and simplify.

  f(f(n))=f(-n^2-4)=-(-n^2-4)^2-4\\\\=-(n^4+8n^2+16)-4\\\\\boxed{f(f(n))=-n^4-8n^2-20}

3 0
3 years ago
On a map. 1 inch equals 15 miles. Two cities are 6 inches apart on the map. What is the actual distance between the cities? ​
WARRIOR [948]

Answer:

90 miles

Step-by-step explanation:

The person who answered first explained it well, so I dont have to.

have a nice day :)

5 0
3 years ago
What expression can be used to add 5/12 + 3/8 PLZ TELL ME
Julli [10]

Answer:

19/24

Step-by-step explanation:

5/12 + 3/8

LCM: 24

(5×2 + 3×3)/24

(10 + 9)/24

19/24

5 0
3 years ago
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