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Semmy [17]
3 years ago
10

Level B

Mathematics
1 answer:
Darya [45]3 years ago
5 0
The number has 2 digits - let's call them x and y. The positive difference between the two combinations (lowest-highest and highest-lowest) is always equal to the positive difference of x and y, multiplied by 9.

For example:

76 and 67: 76 - 67 = 9 and ((7-6)*9) = 1*9 = 9
73 and 37: 73 - 37 = 36 and ((7-3)*9) = 4*9 = 36
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What is 14.5 divided by 34.5? Please show how you did it because I got a bit confused and would like to see what I did wrong.
Akimi4 [234]

Answer:

29/69 (= 0.42)

Step-by-step explanation:

there are several ways to do this, one way is to use fractions:

Expressing each decimal in improper fractions:

14.5 = 14 1/2 = 29/2

34.5 = 34 1/2 = 69/2

Hence,

14.5 ÷ 34.5

= 29/2 ÷ 69/2

= 29/2  x 2/69

= 29/69   (answer)

If you need the answer in decimal, you can use long division to do 29÷69 and you will get 0.42 (nearest hundredth)

8 0
3 years ago
6. Kayla is planning to buy a new phone. Rongers charges $0 for down payment plus $127 monthly fee. Fidoll charges $363 for down
lakkis [162]

The two plans charge the same amount in 11 months.

The plan I would recommend if the plans are contracted for two months is the Fidoll plan.

<h3> When will the two plans charge the same amount?</h3>

The equation that represents the amount that would be paid by Kayla if she buys the phone from Rongers is : $127x

Where x represents the number of months

The equation that represents the amount that would be paid by Kayla if she buys the phone from Fidoll  is : $363 + $94x

Where x represents the number of months

The two above equations would be equal when the plan charge the same amount: $363 + $94x = $127x

Combine similar terms

$363 = $127x - $94x

Add similar terms

$363 = $33x

Divide both sides by 33

x = 11 months

<h3>Which plan would be recommended if the plan is for 2 years?</h3>

Rongers: $127(24) = $3,048

Fidoll = $363 + $94(24) = $2619

I would recommend the Fidoll plan

To learn more about cost, please check: brainly.com/question/25879561

4 0
3 years ago
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