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goldfiish [28.3K]
3 years ago
6

2. y=8-x4x – 3y = -3Answer​

Mathematics
1 answer:
dexar [7]3 years ago
7 0
4x -3y=-3
-4x -4x
-3y=-4x-3
Then divide by -3
Answer

Y=4/3x+1
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Find (-21)+(-13)+20.
Fed [463]

Answer:

14

Step-by-step explanation:

-21+-13+20=14

This is true because when subtracting negatives by negatives you pretty much add them and then when you add a positive to a negative you are technically removing the negative by the amount you are adding.

In short its kind of like using inverse operation in a way.

Hope this helps and have a nice day

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5 0
3 years ago
An experienced cashier at a grocery store takes 2 seconds to scan each item and 40 seconds to process the customer's payment. 1)
grigory [225]

Answer:

The correct option is D) 43 items.

Step-by-step explanation:

As we know that total given time is ,

Y = (60\times2) +6 =126\hspace{0.15cm} sec,

Out of which cashier spends 40 seconds to process the customer's payment.

So the remaining time = (126 - 40) = 86 secs.

And the remaining time is used to scan the item and so that we can calculate here the no items scan is = (86 ÷ 2) = 43.

Therefore we can say that 43 items are being purchased.

6 0
3 years ago
What is the slope of the line that passes through (-1,-2) and (-1,-3)
jok3333 [9.3K]
Slope: (y2-y1)/(x2-x1)
(-3+2)/(-1+1) = -1/0 = undefined
The slope is undefined
7 0
3 years ago
Read 2 more answers
A motor with an efficiency of 75% must supply 240 j of useful work. what amount of work must be supplied to the motor? j 180 j 3
Degger [83]
Work applied to motor is 320j.
6 0
3 years ago
Read 2 more answers
3x + ky = 8
djyliett [7]

Answer:

a) 3x + ky = 8

ky = 8 - 3x

x – 2ky = 5

x - 2(8 - 3x) = 5

x - 16 + 6x = 5

7x = 21

x = 3 (shown)

b) x-2ky = 5

sub x = 3, y = 1/2

3-2k(1/2) = 5

-2k = 2

k = -1

3 0
3 years ago
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