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Lynna [10]
3 years ago
15

What is 2x+3y=30 & x+y=14 In elimination

Mathematics
1 answer:
puteri [66]3 years ago
4 0

Answer:

x= 12 and y= 2

Step-by-step explanation:

First you would line up the equations so the x's and y's are on top of each other. Then you would multiply x+y=14 by 3 to give you 3x+3y=42. After that you subtract 2x-3y=30 and 3x+3y=42 to give you an answer of x=12. After that, you plug in x with 12 in the equation x+y=14. You subtract 12 from both sides to get an answer of 2. So ur solution is (12,2)

   

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A members-only speaker series allows people to join for $28 and then pay $4 for every event attended. What is the total cost for
wariber [46]

Given:

Joining fee = $28

Fee of each event = $4

To find:

Total cost for someone to attend 4 events.

Solution:

Let the number of events be x and total fee be y.

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Fee for x events = $4x

Joining fee remains constant. So, the total fee is

y=28+4x

Substitute x=4 in this equation.

y=28+4(4)

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Therefore, total cost of 4 events is $44.

8 0
3 years ago
3 over the power of 2 multiply by 3 over the power of 5
Nostrana [21]

Answer:

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Step-by-step explanation:

I assume you mean this:

3^2 \times 3^5

If so, then the rule is that when you multiply two numbers with the same base, you give the same base and add the exponents.

3^2 \times 3^5 = 3^{2 + 5} = 3^7

7 0
3 years ago
-x+ y = 12<br> x-2y=3<br><br> Please help
grigory [225]

Answer:

x=-27, y=-15

Step-by-step explanation:

In the attached file

7 0
3 years ago
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The difference of a number divided by 5 and 6 equals 2. <br><br> write equation
dusya [7]
(x/5)-6=2

It depends by difference of. Difference between is more specific. 



4 0
3 years ago
Read 2 more answers
How does 2π/4 simplify to π/4?
lana [24]
It doesn't
remember that
(x/g) times (y/z)=(x time y)/(g times z) so
2pi/4=(2 times pi)/(4 times 1) so
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5 0
3 years ago
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