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sasho [114]
3 years ago
7

Using the function f(x) = 2x + 7 find the following: (show your work) f(2) f(7)

Mathematics
2 answers:
denpristay [2]3 years ago
8 0
Replace the x with 2: f(2)=2*2+7=4+7=11
replace the x with 7: f(7)=2*7+7=14+7=21
Rudiy273 years ago
6 0
F(2)= 2(2)+7
f(2)= 11

f(7)=2(7)+7
f(7)=21
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Consider the rational number 3/11 a. What are the value of a and b in a divide by b when you use division to find the decimal fo
PolarNik [594]

Answer:

The decimal form of this rational number is 0.\overline {27}.

Step-by-step explanation:

a) Let \frac{a}{b} a rational number. From statement we understand that a represents the numerator, while b corresponds with the denominator of the rational number. Hence, a is 3 and b is 11.

b) The decimal form is obtained by dividing a by b, we presented the step needed to determine the decimal form:

i) Multiply the numerator by 10:

Dividend: 30/Divisor: 11/Known result: 0. /Residue: N/A

ii) Multiply the divisor by 2 and subtract from the dividend:

Known result: 0.2 /Residue: 8

iii) Multiply the residue by 10:

Known result: 0.2 /Residue: 80

iv) Multiply the divisor by 7 and subtract from the residue:

Known result: 0.27 /Residue: 3

v) Multiply the residue by 10:

Known result: 0.27 /Residue: 30

vi) Multiply the divisor by 2 and subtract from the residue:

Known result: 0.272/Residue: 8

vii) Multiply the residue by 10:

Known result: 0.272 /Residue: 80

viii) Multiply the divisor by 7 and subtract from the residue:

Known result: 0.2727/Residue: 3

We have notice that the decimal form of \frac{3}{11} is a periodical decimal number. Hence, we conclude that decimal form of this rational number is 0.\overline {27}.

3 0
3 years ago
There are 276 nickels. How many whole dollars can be made from this and with how many nickels left over?
cupoosta [38]
1 nickel = 5 cents
1 dollar = 20 nickels


You can make 13 dollars plus 16 nickels left over

20 * 13  = 260 
then 260 + 16 = 276 
6 0
3 years ago
514 A restaurant's menu features appetizers, 7 entrées, and 3 dessertsA customer orders only oneappetizer, only one entrée, and
yuradex [85]
Simple...there'a a LOT of combinations...

so to simply solve this;there is 5 appetizers, 7 entrees and 3 desserts....

Just take 5*7=35

and 

35*3=105

Thu,s there is 105 combinations possible to make.

Thus, your answer, D.
8 0
3 years ago
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
Please help<br> hahahahaaahahaahahaaha
Blababa [14]

Answer:

The answer is 22.

Step-by-step explanation:

Just well use a calculator. If you don't have that then use PEMDAS. Hope it helps.

5 0
3 years ago
Read 2 more answers
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