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den301095 [7]
4 years ago
13

3x +2y=20 If x=3 what is the value of y

Mathematics
2 answers:
nikitadnepr [17]4 years ago
6 0
The value of y is 5.5 this is what i got and i worked it out on paper 
SpyIntel [72]4 years ago
4 0
Y= -3x/2+10
You can find it by plugging in x, simplifying both sides and isolating y.
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Solve for x & y solve x = 3 + yy = -2x + 9
sergey [27]

x = 3 + y Eqn(1)

y = -2x + 9​ Eqn(2)

Let us solve the system of equations with the substitution method

x - 3 = y (Subtracting 3 from both sides of the Eqn(1))

Replacing y = x - 3 in Eqn (2), we have:

x - 3 = -2x + 9

x = -2x + 9 + 3 (Adding 3 to both sides of the equation)

x + 2x = 9 + 3 (Adding 2x to both sides of the equation)

3x = 12 ( Adding like terms)

x = 12/3 (Dividing by 3 on both sides of the equation)

x = 4

Replacing x=4 in Eqn(1), we have:

4 = 3 + y

4 - 3 = y (Subtracting 3 from both sides of the equation)

y=1

The answers are:

x= 4 and y=1

6 0
1 year ago
The difference between a number and 15?
Thepotemich [5.8K]

Step-by-step explanation:

sorry but not gett your question

there's only one number here

5 0
4 years ago
Last year, a French restaurant used 394,070 ounces of cream. This year, due to a menu update, the restaurant used 275,849 ounces
ludmilkaskok [199]

Answer:

30%

Step-by-step explanation:

394,070-275,849= 118,221

118,221/394,070=0.3=30%

6 0
3 years ago
Todd wants to find 352 + 116. Break
jekas [21]

Answer

given,

352 + 116

we have to break 116 and use it on open number line

breaking of number 116

116 = 100 + 10 + 6

And addition will be shown in the number line attached below

now,

352 + 100 = 452

452 + 10 = 462

462 + 6 = 468

we know

sum of

352 + 116 = 468

8 0
3 years ago
Which of the following numbers are less than or equal to 1.75?
antoniya [11.8K]

Answer:

14/11=1.272, which is less than 1.75

1.6 is less than 1.75

7/4 = 1.75, which is equal to 1.75

The answer is all, A, B and C

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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