MATHEMATICS HIGH SCHOOL

Find the value 1/2+1/3+1/4=
plz answer step by step
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Answers

Answer 1

Answer:

Answer:

$(13)/(12)$

Step-by-step explanation:

Find the LCM of 2, 3, 4: 12
Alter the numerators to fit the denominators (steps not shown): $(6)/(12) + (4)/(12) + (3)/(12)$
$(6)/(12) + (4)/(12) + (3)/(12) = (13)/(12)$

I hope this helps!

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Benito spent $1837 to operate his car last year. Some of these expenses are listed below. Benito's only other expense was for gasoline. If he drove 7600 miles, what was the average cost of the gasoline per mile?

Answers

I answered this question before. It lacked some data needed to solve this problem.

Operating Expenses
Cost Insurance $972
Registration $114
Maintenance $105

1837 - 972 - 114 - 105 = 646 cost of gasoline

646 / 7600 = 0.085 or 8.5 centavos

Answer:

8.5

Step-by-step explanation:

Lizzie and Jane share 2690 beads equally between them. They crejewellery items to sell at the school fayre. Jane needs 7 beads per
item and Lizzie needs 8 beads per item. Who, if anyone, will have me
most number of beads left over?

Answers

Answer:

both of them would have the same amount of beads left over

Step-by-step explanation:

Divide 2690 by 2 = 2690/2 = 1345

divide 1345 by 7 = 192

this remains 1

divide 1345 by 8 = 168

this remains 1

1. If Ronnie paid $40 for 8 hamburgers, find the unit price of a hamburger.

Answers

Answer:

The burger is $5 each.

Step-by-step explanation:

8x = 40

x = 5

Answer:

the unit price would be $5

Step-by-step explanation:

40÷8=5

5×8=40

What is the solution to this system of linear equations?

x + y = 4

x − y = 6

Answers

Answer:

x=5 , y= -1

Step-by-step explanation:

You can see that one of the y's is negative while the other is positive, so you can add them together.

Now, negative 1 + positive 1 = 0, so the y's cancel out leaving only the x's.

Remember you can't add one part without adding the other so x+x = 2x, and 4+6=10. This makes the final equation 2x=10.

You can simplify that into x=5. This gives you the answer for x

Then substitute x=5 into any of the two equations (doesn't matter) I'll use the first one. So if you substitute it you get 5+y=4.

Simplified, y= -1

Therefore, x= 5 and y=-1

Answer:

(5,-1)

Step-by-step explanation:

Got it right on edge cause of the guy above me

y = 8x − 2, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? A{(0, −2), (1, 6), (2, 14)} B{(0, −2), (2, 13), (−5, −40)} C{(1, 7), (2, 7), (3, 7)} D{(1, 6), (2, 13), (3, 24)}

Answers

Answer: The correct option is (A){(0, −2), (1, 6), (2, 14)} .

Step-by-step explanation:

y = 8x-2

(0, −2) putting, x = 0 and y = -2

-2 = 8(0) - 2

RHS =LHS

(1, 6) putting x = 1 and y = 6

6 = 8(1) - 2

RHS =LHS

(2, 14) putting x = 2 and y = 14

14 = 8(2) - 2

RHS =LHS

Hence, all the coordinates in set (A) are satisfying the given function.

The answer is A, because all of the ordered pairs work when inputed into the function.

8(0) - 2 = -2

8(1) - 2 = 6

8(2) - 2 = 14

The correct answer is A.

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3
f(x) = (x + 3)2 − 6
f(x) = (x + 6)2 + 3
f(x) = (x + 6)2 − 6

Answers

complete the square
move the 3 aside and work in parenthasees
f(x)=(x^2+6x)+3
take 1/2 of 6 and square it (6/2=3, 3^2=9)
add 9 and -9 inside
f(x)=(x^2+6x+9-9)+3
factor perfect square
f(x)=((x+3)^2-9)+3
get rid of parenthases
f(x)=(x+3)^2-9+3
f(x)=(x+3)^2-6

2nd choice

Answer:

f(x) = (x+3)2+3

Step-by-step explanation:

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