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otez555 [7]
2 years ago
12

Find the sum of the digits 10^15−1.

Mathematics
2 answers:
Shtirlitz [24]2 years ago
8 0

Answer:

135

Step-by-step explanation:

10^15 = 1 000 000 000 000 000

10^15 - 1 = 999 999 999 999 999

There are 15 nines

15*9 = 135

Alchen [17]2 years ago
4 0

Answer:

149

Step-by-step explanation:

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70 is the answer I am pretty sure
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What is the value of n?<br><br><br><br> n–2=10n+42
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Answer:

N= -44/9 Hope this helped, <3

Step-by-step explanation:

Let's solve your equation step-by-step.

n−2=10n+42

Step 1: Subtract 10n from both sides.

n−2−10n=10n+42−10n

−9n−2=42

Step 2: Add 2 to both sides.

−9n−2+2=42+2

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Step 3: Divide both sides by -9.

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Vertical compression

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2 years ago
Translate the sentence into an equation.
Ksju [112]

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Answer:

A. 8 gallons

B. Drive by car is $59.4 cheaper than travel by train

Step-by-step explanation:

According to the scenario, given data are as follows,

Total drive = 400 miles

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Fuel cost per gallon = $4.45

A. So, Total fuel required to drive 400 miles can be calculated as follows,

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So, drive by car is $59.4 cheaper than travel by train.

5 0
3 years ago
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