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UkoKoshka [18]
3 years ago
15

can this problem be solved using the unitary method?yes or no.An oven has a maximum temperature of 220°c.what will it be in 2 da

ys time​
Mathematics
1 answer:
iogann1982 [59]3 years ago
8 0

Answer:

yes 25 :)

I'm sorry if I'm wrong

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-2x-3y=-16; 5x+9y=40
MA_775_DIABLO [31]

Answer:

x=8 y=o

Step-by-step explanation:

If first expression multiples 3 so: -6x-9y=-48 to emerge with second expression

7 0
3 years ago
you have $220 in your savings account. you take #35 from your account each week for four weeks? How much is left in your account
lord [1]
The answer is 80

35x4=140
220-140=80
7 0
3 years ago
I need to know the solution to this
Alex73 [517]
There are two ways to do this but the way I prefer is to make one of the equations in terms of one variable and then 'plug this in' to the second equation. I will demonstrate

Look at equation 1, -2x+y=10 this can quite easily be manipulated to show y=10+2x.

Then because there is a y in the second equation (and both equations are simultaneous) we can 'plug in' our new equation where y is in the second one 4x-y=-14 \Rightarrow 4x-(10+2x)=-14 which can then be solved for x since there is only one variable 4x-10-2x=-14 \Rightarrow 2x=-4 \Rightarrow x=-2 and then with our x solution we can work out our y solution by using the equation we manipulated y=10+2x = 10+(2 \times -2) = 10-4=6.

So the solution to these equations is x=-2 when y=6
8 0
3 years ago
Find the perimeter of a triangle with vertices A(–3, 5), B(–3, 2), and C(1, 2)<br> Show all work
Luden [163]

Answer:

perimeter= 12units

Step-by-step explanation:

steps are in picture

7 0
3 years ago
Help pls me i need help with math
Ymorist [56]

Answer:

11 yd

Step-by-step explanation:

16-5=11 yd

6 0
2 years ago
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