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zhannawk [14.2K]
3 years ago
14

Which expression has a value of 7/12 ? 7/8 + 4 , 1/3 + 1/4 , 6/8 + 1/4 , 2 1/12 + 5 1/12

Mathematics
1 answer:
vazorg [7]3 years ago
5 0

Answer:

\frac{1}{3}  +  \frac{1}{4}

Step-by-step explanation:

We want to find an expression that has a value of

\frac{7}{12}

First option:

\frac{7}{8}  + 4 =  \frac{7}{8}  +  \frac{32}{8}  =  \frac{39}{8}  \ne \frac{7}{12}

Second option:

\frac{1}{3}  +  \frac{1}{4}  =  \frac{4}{12}  +  \frac{3}{12}  =  \frac{7}{12}

Correct option

Third option

\frac{6}{8}  +  \frac{1}{4}  =  \frac{3}{4}  +  \frac{1}{4}  = 1

Fourth option:

2 \frac{1}{12}  + 5 \frac{1}{12}  =  \frac{43}{6}

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Find the co-ordinates of the vertex of the function y=x²-12x+2 and show your work
nataly862011 [7]

Answer:

(6,-34)

Step-by-step explanation:

You can use the vertex formula to find the x of the vertex and then plugin the x value into the formula to find the y value.

x = -\frac{b}{2a}

x = -\frac{b}{2a}

x = -\frac{-12}{2(1)}

x = 6}

Now plugin 6 into  y=x²-12x+2

y=x²-12x+2

y=6²-12(6)+2

y=36-72+2

y=36-72+2

y = -34

Vertex = (6,-34)




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3 years ago
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Answer:

Let n and n+4 be the numbers. Then:

n² + 3(n+4)=66

n²+3n-54=0

(n+9)(n-6)=0

n=6 or -9

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Assuming positive integers only, the numbers are 6 and 10…..

Step-by-step explanation:

100% right

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3 years ago
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During the spring carwash the activities club washed 14 fewer cars then during the summer car wash. They wash a total of 96 cars
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3 years ago
Solve the following equation for x: 6(4x+ 1) = 3(x + 8) + 3.
salantis [7]

Answer:

x = -1/7  Or 0.143 (3 dec)

Step-by-step explanation:

6(4x + 5) = 3(x + 8) + 3  

= 24x + 30 = 3x + 24 + 3  

24x + 30 = 3x + 27  

21x + 30 = 27

21x = -3  

21x/21 = -3/21  

x = -1/7

Or 0.143 (3 dec)

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¿Qué porcentaje de personas encuestadas se comunican menos de 73 minutos?
AlekseyPX

Answer:

20%

50=100%

10=x

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1000÷50=20

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3 years ago
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