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emmainna [20.7K]
3 years ago
11

How do you do question number 20 and 21 and 22

Mathematics
1 answer:
BARSIC [14]3 years ago
4 0
X+2y= 23
2y=-x+23
y=\frac{-1}{2} x+ \frac{23}{2}
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Ahhh I’m stuck on this one please help
vodomira [7]

Answer:

1.20 ÷ 4 = 0.30 per unit

Please mark as brainliest;)

8 0
2 years ago
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Acellus. Solve for x. x = ?
Makovka662 [10]

Answer:

according to basic proportionality theorem

\qquad\sf {:}\longrightarrow 25/35=x/63

\qquad\sf {:}\longrightarrow 5/7=x/63

\qquad\sf {:}\longrightarrow 7x=63×5=315

\qquad\sf {:}\longrightarrow x=315/7=45

5 0
3 years ago
00:00
Valentin [98]
I’m 99% sure it’s D because you would add both those numbers to equal his debt that day
3 0
4 years ago
I need to find and write the equation for the problem.
Julli [10]
0.8p - 50 < = 150
0.8p < = 150 + 50
0.8p < = 200
p < = 200/0.8
p < = 250

the reason I set it up this way is because when it is 20% off, u r actually paying 80% of the original price (p)....80% of the original price is written as 0.8p...then u subtract ur 50 dollar discount coupon...- 50.....and if all she can spend is 150....it would be less then or equal to 150. So the most she can spend on the phone is 250

7 0
3 years ago
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What number is a factor of 12,but not a multiple of 3
choli [55]
There are 3 numbers as such.
First lets list all the factors of 12
1,2,3,4,6,12
now lets see which are multiples of 3
3,6 and 12 are multiples of 3
therefore we are left with
1,2 and 4
6 0
4 years ago
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