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krok68 [10]
3 years ago
6

Answer to question 9

Mathematics
1 answer:
olganol [36]3 years ago
7 0
The answers i. 14 ii. 28 ii. 42
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Sam and Liam raced each other up and then down the hill. Sam's average speed up the hill was 1 mph, and his average speed down t
Radda [10]

So, we know that it takes Sam 1 mph up and 9 mph down and it takes Liam both 2 mph down and up the hill. So if we divide the 2 mph for Liam by 2 miles (the whole length of the hill)  we will get 1 or 1 hour. Then we do 1/1 (i don't know how to explain this part of why we do that, sorry) and than we do 1 / 9 and we get 1/9 so we add them and get 1 1/9 so that's Sam's time.

      So, Liam took one hour and Sam took 1 and 1/9 hours, in conclusion liam was faster

<h2> (I'm really sorry for my bad explaining, i tried my best)</h2>
8 0
3 years ago
Money in a bank triples every 10 years. If $100 is deposited today, what will its value be after 40 years? PLEASE SHOW ME STEP B
LenKa [72]

Answer:

d) $8,100

Step-by-step explanation:

Given information:

  • Money triples every 10 years
  • Initial deposit = $100
  • Number of years invested = 40 years

If the money triples (multiplies by 3) every 10 years,
then in 40 years time it will triple <u>4 times</u>, as 40 ÷ 10 = 4

⇒ Account balance after 40 years = $100 × 3 × 3 × 3 × 3

                                                         = $100 × 3⁴

                                                         = $8,100

<u>Proof</u>

In 10 years time the balance of the account will be:

$100 x 3 = $300

In another 10 years time, the balance of the account will be:

$300 x 3 = $900

In another 10 years time, the balance of the account will be:

$900 x 3 = $2700

In another 10 years time, the balance of the account will be:

$2700 x 3 = $8100

7 0
1 year ago
Review later
____ [38]
It would be 50 times because 15 divided by 3 is 5 and you just add your 0 back and get 50! hope this helps!
3 0
2 years ago
What is 8114 divided by 46
Shkiper50 [21]

Answer:The answer can be calculated by doing the following

Steps;

Step-by-step explanation:

3 0
2 years ago
Can somebody plz help answer these questions correctly thanks!! :))
atroni [7]
1 is A
2 is C
3 is B

hopefully this helps
8 0
2 years ago
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