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Umnica [9.8K]
2 years ago
7

ASAP plz

Mathematics
2 answers:
Ivenika [448]2 years ago
8 0

Answer:

$23.85

Step-by-step explanation:

39.95 x 3 which can also be 39.95 + 39.95 + 39.95=119.85

So then do 143.70-119.85 to find the answer which is 23.85.

ololo11 [35]2 years ago
8 0

Answer:

$23.85

Step-by-step explanation:

Take $39.35 and multiply x3

(39.35 x 3) OR (39.35 + 39.35 + 39.35)  

Then take $143.70 and subtract.

($143.70 - $119.85)

= $23.85

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Solve the system of equations by graphing: -1/3x + y=-1, y=4+1/3x
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To graph this line, plot a point at the y-intercept (0, -1), than plot the next point using the rise over run from the slope (\frac{1}{3}) by counting up 1 and to the right 3 of the y-intercept.  This gives you a second point of (3. 0).  Draw a line through those two coordinates.

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y = 4 +  \frac{1}{3}x    ⇒   y =  \frac{1}{3}x  + 4

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3 0
3 years ago
Clodagh and Eva went school supply shopping together. Clodagh bought 3 packs of pencils and 5 notebooks for a total of $18. Eva
elena55 [62]

Answer:

each notebook costs $2.70

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Step-by-step explanation:

system of equations:

let p = pack of pencils

let n = notebook

3p + 5n = 18

4p + 4n = 16.8

I used the elimination method by multiplying the first equation by 4 and the second equation by -3

4(3p + 5n = 18)  =  12p + 20n = 72

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3 years ago
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