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diamong [38]
4 years ago
7

Please help me with this question !!!

Mathematics
1 answer:
Alex73 [517]4 years ago
7 0
3 tenths + 6 hundredths = 0.36
2 tenths + 16 hundredths = 0.36
1 tenth + 26 hundredths = 0.36
0 tenths + 36 hundredths = 0.36
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a store sells small notebooks for $7 and large notebooks for $10. If a student buys 6 notebooks and spends $51, how many of each
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3 small ones and 3 big ones because 3*7=21 plus 10*3=20 =51
4 0
4 years ago
Read 2 more answers
In the equation below, for what value of c does x = 4?<br> 1 / (2x + 4) = 3x-c
rodikova [14]

Answer:

Option D.

Jenn's answer is not correct. She got it substituting c=4 into the equation and solving for "x".

Step-by-step explanation:

Given the following equation:

\frac{1}{2}(2x + 4) = 3x-c

Since you need that x=4, you hace to substitute that value into the equation:

\frac{1}{2}(2(4) + 4) = 3(4)-c

Now you need to solve for "c":

\frac{1}{2}(8 + 4) = 12-c\\\\\frac{12}{2}= 12-c\\\\6=12-c\\\\c+6=12\\\\c=12-6\\\\c=6

Therefore for a  a value of c=6, you get x=4

Then, the you can identify that the correct answer is the one given in the Option D.

Jenn made a mistake, because she substituted c=4 into the equation and then solve for "x":

\frac{1}{2}(2x + 4) = 3x-(4)\\\\x+2=3x-4\\\\2+4=3x-x\\\\6=2x\\\\\frac{6}{2}=x\\\\x=3

3 0
3 years ago
8 miles in 0.5 hour what rate in miles per hour
yan [13]
In this question it is already given that a person travels 8 miles in 0.5 hours. This is enough information to get to the required answer. Let us first write down all the information's that are already given in the question.
In 0.5 hours the person covers a distance = 8 miles
Then
In 1 hour the person covers a distance of = 8/0.5 miles
                                                                   = 16 miles
So the speed of the person in miles per hour = 16/1 miles/hour
                                                                         = 16 miles per hour
8 0
3 years ago
Read 2 more answers
what are the least common denominator of the four fractions listed below? 20 7\10 , 20 3\4 , 18 9\10 ,20 18\25. A:2. B: 40 C: 50
faust18 [17]
A, I think
none of them have anything higher than a 2, so yeah
8 0
3 years ago
1 7/3 in simplest form
MrMuchimi
It is already in simplest form, since 17 is a prime number.
8 0
4 years ago
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