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NISA [10]
3 years ago
7

How do i substitute y=x to 3x+2y=20

Mathematics
2 answers:
never [62]3 years ago
6 0
Where ever u see a y change it to an x
3x+2(x)=20
5x=20
x=4
GrogVix [38]3 years ago
5 0
Hello there,

<span>How do i substitute y=x to 3x+2y=20

Answer : since both are equal , you can change the letters to the same one.
3x + 2x = 20
5x = 20 
x = 5
Therefore y = 5 

Hope This Helps You!
Good Luck Studying :)</span>
You might be interested in
ASAP!: can anyone solve three times the difference of Federico age and 4 increased by 7 is greater than 37 what are possible val
Alexandra [31]

Answer:

Federcio's age possible values are those that are greater than 14 i.e 15, 16, 17 and so on

Step-by-step explanation:

Let Federico's age = x

Three times the difference of Federico’s age, and 4 means:

3(x - 4)

Increased by 7:

3(x - 4) + 7

Is greater than 37:

3(x - 4) + 7 > 37

Solving the inequality:

3x - 12 + 7 > 37

3x - 5 > 37

3x > 37 + 5

3x > 42

x >42/3

x > 14

Federcio's age possible values are those that are greater than 14

7 0
2 years ago
F(x) = -4x + 8 find f(-4)
harina [27]

Answer:

f(-4)= 24

Step-by-step explanation:

-4(-4)+8 We need to multiply -4 and -4 and a negative times a negative is a     positive.

16+8 Now it's easy math and we just add them

This gives us 24.

7 0
3 years ago
12. If you flip a dime 50 times:
nata0808 [166]

Answer: 25 heads 25 tails

Step-by-step explanation: you would have a 50/50 chance to get heads or tails so sence there are 2 sides you would get 25 heads and 25 tails

4 0
3 years ago
Read 2 more answers
I need help<br> With this plz
s2008m [1.1K]

Answer:

The discount is the same.

Step-by-step explanation:

We need to find the ratios of both discounts.

41/50 = 61.5/75

If the question is True, this means that the ratios should be the same. So we have to cross multiply to find the answer.

75*41 = 50*61.5 = 3075

These two multiplication problems both equal 3075. Since the ratios are equal, the discounts are also equal.

4 0
3 years ago
First try was incorrect
nataly862011 [7]

Answer:

So if he needs 1.5 of the lemonade mix, to find how much you need, simplu divide.

Step-by-step explanation:

4.5/1.5=3

He can make 3.

8 0
2 years ago
Read 2 more answers
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