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Volgvan
3 years ago
5

How many 4 digit palindromes contain both the digits 1 and 2

Mathematics
1 answer:
Norma-Jean [14]3 years ago
8 0

What a clever sneaky little problem !

There can only be two of them:    1221  and  2112 .

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Pat’s Potato Farm grew 490 pounds of potatoes. Pat delivered 3/7 of the potatoes to a vegetable stand. The owner of the vegetabl
madam [21]

Answer:

14

Step-by-step explanation:

I first multiplied 490 by 3/7

giving me 1470/7

I divide 1470 by 7 giving me 210

As I got 210

I multiplied 210 with 2 and got 410/3

I divided 410 by 3, getting 140.

It then said half of what was delivered was put into 5 pound bags, so

140× 1/2 or 140÷2 is 70

70 divided by 5 is 14

They made 14 5-pound bags.

3 0
3 years ago
If x-1/x = 9 find the value of x +1/x
iren [92.7K]

Answer:

\sqrt{85}

Step-by-step explanation:

Given

x - \frac{1}{x} = 9 ← square both sides

(x - \frac{1}{x})² = 9²

x² - 2 + \frac{1}{x^2} = 81 ( add 2 to both sides )

x² + \frac{1}{x^2} = 83

Now

(x + \frac{1}{x})² = x² + \frac{1}{x^2} + 2, thus

x² + \frac{1}{x^2} = 83 + 2 = 85

(x + \frac{1}{x} )²= 85 ( take the square root of both sides)

x + \frac{1}{x} = \sqrt{85}

5 0
3 years ago
22 points )Todd went out for lunch and ordered the taco dinner for $7.95and a soda for $1.50 the total cost included a 6% tax ra
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You need to first add up the total cost which is 12.45, then find 6% of 12.45 which is .747 or rounded to.75.(tax) then you need to add it to get 13.20. so the tip was 13.20
7 0
3 years ago
6. A candle that is 8 inches tall burns at a rate of 3/4 inches per hour. Find the height of the
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The candle would be 5 inches after 4 hours

3/4 x 4 = 3
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2 years ago
A pipe is leaking at 1.5 cups per day. About how many gallons per week is the pipe leaking?
ANEK [815]
1.5 cups/day x 1 gallon/16 cups x 7 days a week = 0.66 gallons in 1 week
3 0
3 years ago
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