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Dmitrij [34]
3 years ago
11

−2x = 4y + 6 2(2y + 3) = 3x − 5 What is the solution (x, y) to the system of equations above

Mathematics
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

(1;-2)

Step-by-step explanation:

x=-2y-3

2(2y+3)=-6y-9-5

10y=-20

y=-2

x=4-3=1

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What is 1/20 written as a decimal?
Black_prince [1.1K]

Answer:

0.05

Step-by-step explanation:

divide 100 by 20

6 0
3 years ago
What is the value of 3 in 230,001
Katyanochek1 [597]
30,000
the way you can solve this is by removing all numbers in front of the selected number(in this case, 2 should be removed) then change all numbers behind to 0.
6 0
3 years ago
-7x-6y=-1
Xelga [282]
Cancel something
we cancel x's

multiply 1st equation by 5 and 2nd by 7 and add them
-35x-30y=-5
<u>35x-28y=7 +</u>
0x-58y=2

-58y=2
divide both sides by -58
y=-1/29
sub back
5x-4(-1/29)=1
5x+4/29=1
minus 4/29 from both sides
note, 1=29/29
5x=25/29
divide bot sides by 5 (or times 1/5)
x=5/29


(5/29,-1/29)
6 0
3 years ago
3. A savings account has a 3% interest rate. (a) Complete the ratio table shown. Show your work. Deposit ($) 100 50 300 Interest
blsea [12.9K]
We all know, savings account have "Compound Interest"

So, Here, On $100 deposit, amount of Interest = $12

So, for $50, it would be: $6

Then, for $300, it is: $36

b) If you deposit $200, then balance after 1 year, 
A = P(1 + r)^t

A = 200(1 + 0.03)^1

A = 200(1.03)
A = $206

Now, Balance with $150
A = 150 (1 + 0.03)^1
A = 150(1.03)
A = 154.5

Difference = 206 - 154.5 = $51.5

In short, Your Answer would be: $51.5

Hope this helps!

6 0
3 years ago
Chris has $120 to spend at the bookstore. Chris buys a hardcover book for $36, as well as some gift cards for his family and fri
Wittaler [7]

Answer:

120-36=84

84/15=5 with $9 left

120=36-15x

6 0
3 years ago
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