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Alja [10]
3 years ago
13

What is the value of y when x = 4? 2x - 3y = 20 O A. -9 OB. -4 c. 4 OD. 8

Mathematics
1 answer:
umka2103 [35]3 years ago
5 0
2x-3y= -4 because 2x=8 since x=4 so,

8 - 3y = 20
-8. -8

-3y = 12
————
-3
y = -4
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Solve the proportion for x
Feliz [49]
<h3>Solution:</h3>

\frac{16}{x}  =  \frac{192}{156}  \\  =  >  \frac{x}{16}  =  \frac{156}{192}  \\  =  > x =  \frac{156}{192}  \times 16 \\  =  >  x =  \frac{156}{12}  \\  =  > x = 13

<h3>Answer:</h3>

x = 13

6 0
3 years ago
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Lizzie bought 0.8 kg of pears at €1.90 per kilogram and 1.4 kg of apples. The total cost €4.46. What was the price per kilogram
scoundrel [369]

Answer:

The the cost of 1 kg apples =  € 2.1

Step-by-step explanation:

The amount of pears bought by Lizzie  = 0.8 kg

The amount of apple bought by Lizzie  =  1.4 kg

Total amount paid  =  €4.46

Now, the cost of 1 kg pears =  €1.90 per kg

So, the cost of 0.8 kg pears  = 0.8  x (1.90)  =  €1.52

Now, let the cost of 1 kg apples =  € m

So, the cost of 1.4 kg apples  = 1.4 x ( € m)  = 1.4 m

So, the total amount = Cost of Apples + Cost of Pears

⇒                    €4.46   =  €1.52   +  1.4 m

or, 1.4 m = 4.46  - 1.52  = 2.94

⇒ m = 2.94/1.4 = 2.1

or, m = 2.1

Hence, the the cost of 1 kg apples =  € 2.1

7 0
4 years ago
HEEEEEEEELP ME Devin created a game as part of a math assignment. The game shares the same rules as the Integer Game, however, i
pishuonlain [190]
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Yes u got this cause I’m pretty sure he’s right
8 0
3 years ago
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Sam had four test last month his scores were 81 94 83 and 91 what is the median of his scores
Slav-nsk [51]
Put them in order of least to greatest and then cross out them till you get the middle number. 81,83,91,94. answer is 91.
4 0
4 years ago
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In the equation 0.75 - 5/8s = 44, how do you combine the like terms?
Leokris [45]

s = 71.6

____________

0.75 - 5/8s = 44

3/4 - 5/8s = 44

3/4 - 3/4 + 5/8s = 44 + 3/4

5/8s = 44 3/4

5/8s / 5/8 = 44 3/4 / 5/8

s= (179/4 / 5/8)

s= (179/4 * 8/5)

s= (179/1 * 2/5)

s= (358/5)

s= (350/5 + 8/5)

s= (70 + 8/5)

s= (70 + 1 + 3/5)

s= 71 3/5

s= 71.6

I checked this and its correct :P Sorry about the late answer, hope this helps!

7 0
3 years ago
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