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Tems11 [23]
3 years ago
10

Whats y=6x-18y=4x-10

Mathematics
2 answers:
77julia77 [94]3 years ago
6 0
4x-10=6x-18
4x=6x-8
-2x=-8
x=4

y=6(4)-18
y=24-18
y=6
sesenic [268]3 years ago
5 0
1.) You add 18 to both sides          2.) You add 10 to both sides
    y = 6x - 18                                         y = 4x - 10
+18        +18                                      +10        +10
then you divide by 6                       then you divide by 4   
18 = 6x                                           10 = 4x
/6     /6                                             /4    /4
where x is equal to 3                      where x is equal to 2.5
x = 3                                                x = 2.5

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2 years ago
I need help with number 3
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3 years ago
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Evaluate 6²-7²+8²-9²+..+998²-999²​
Llana [10]

Answer:

-499,485.

Step-by-step explanation:

We can transform this to an arithmetic series by  working it out in pairs:

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8^2 - 9^2 = (8-9)*8+9) = -17  

10^2 - 11^2 = -1 * 21 = -21 and so on

The common difference is -4.

The number of terms in this series  is (998 - 6) / 2 + 1

= 992/2 + 1 = 497.

Sum of n terms of an A.S:

= n/2 [2a1 + (n - 1)d  

Here a1 = -13, n = 497, d = -4:

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3 0
3 years ago
Mr. Yasin paid a total of 9.43 to buy three boxes of cereal. If he paid 3.99 for the 1st box and 2.97 for the 2nd box how much d
Vikentia [17]

Answer:

$2.47

Step-by-step explanation:

Pretend if Mr. Yasin didn't pay for the 3rd box, find out how much he had left after paying for the first 2 boxes.

9.43 - 3.99 - 2.97 = 2.47

8 0
2 years ago
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Answer:

Predecessor: 9851

Successor: 9853

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The predecessor of a number is 1 less than it.

The successor of a number is 1 more than it.

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5 0
3 years ago
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