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Hoochie [10]
3 years ago
8

Solve four ninths plus nine eighteenths

Mathematics
2 answers:
MissTica3 years ago
5 0

Answer: 17/18

Step-by-step explanation: For this problem we will solve 4/9 + 9/18. It is best if you make the fractions equivalent.

4/9 can also be written as 8/18. Now we can add without a problem.

8/18 + 9/18 = 17/18

ruslelena [56]3 years ago
4 0
77 is your answer ..
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A normal population has a mean of 12.2 and a standard deviation of 2.5. compute the z value associated with 14.3. what proportio
Citrus2011 [14]
The z-score associated with 14.3 is 0.84.  0.2995 of the population is between 12.2 and 14.3.  0.1894 of the population is less than 10.0.

The formula for a z-score is

z=(X-μ)/σ

With our data, we have:
z=(14.3-12.2)/2.5=0.84

The z-score associated with the mean is 0.5.  To find the proportion of the population between the mean and 14.3, subtract 0.7995 (the proportion of population below the z-score of 0.84, using http://www.z-table.com) and 0.5:

0.7995 - 0.5 = 0.2995.

The z-score for 10.0 is

(10.0-12.2)/2.5 = -0.88.  The proportion of the population less than this is 0.1894.
5 0
3 years ago
3x-y+2=0 in rectangle form
kotegsom [21]

Complete Question:

Convert 3x-y+2=0 in rectangle form to polar form

Answer:

r ( 3cosθ - sinθ) = -2

Step-by-step explanation:

The equation so given is already in rectangular form, the task is to convert it to polar form.

3x - y + 2 = 0

To transform an equation from the rectangular to the polar coordinate:

x = r cosθ

y = r sinθ

Substitute the representations for x and y into the given equation:

3(r cosθ) - (r sinθ) + 2 = 0

3rcosθ - rsinθ = -2

The polar representation of the equation then becomes:

r ( 3cosθ - sinθ) = -2

8 0
3 years ago
If gasoline is $2.159 per gallon in the us. How much would it cost in gasoline to drive 600 miles?
Goryan [66]
1 gallon is 20 miles so if u driving 600 miles 600/20=30 thats 30 gallons u need 30 times 2.159 is 64.77 so
$64.77
8 0
3 years ago
Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasnt yet read. How man
Anit [1.1K]
<span>Let n = the number of pages not read
Then the number of pages read = n/4 + 3
Since the total number of pages is 193, we have

n + n/4 + 3 = 193
5n/4 = 190
n = 152
At 8 pages per day it will take 152 pages/ 8 pages/day = 19 days

</span>
5 0
3 years ago
What is the greatest common factor of 15 and 65
svet-max [94.6K]

Answer: 5


Step-by-step explanation:

The most you can divide by 15 and 65 to get a whole number would be 5

8 0
3 years ago
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