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adoni [48]
3 years ago
8

I need in depth help answering ​

Mathematics
1 answer:
Volgvan3 years ago
8 0
What is the question
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Find two integers whose sum is -3 and product is -18
Mariulka [41]

let two integers be x and y

A.T.Q

x+y= -3

or, x= -3-y(i)

and xy= -18

or,(-3-y)y= -18[by(i)]

or,- -3y-y²= -18

or,-y²= -18+3

or, -y²= -15

or, y²=15

therefore y=✓15

from (i)

x= -3-✓15

y=√15

7 0
3 years ago
Read 2 more answers
Solve the system by either elimination or substitution
Alex_Xolod [135]
The correct answer is A: x=2 and y=-3. Either method would work, but for example, let's use elimination. If you multiply the second equation by 5, you get: 10x +5y = 5. When you add both equations, you can then cross out both y terms. You are left with one equation that reads: 13x=26. Solving for x gives you 2. You can substitute 2 in for x in either equation and you will receive -3 for your y value.
5 0
3 years ago
A belt and a wallet cost $42 while 7 belts and 4 wallets cost $213. Calculate the cost of each item.
Fittoniya [83]
Let, the cost of a belt = x
cost of a wallet = y

Then, system of equations would be:
x + y = 42
7x + 4y = 213

Multiply 1st equation by 4, 
4x + 4y = 168
Substitute it from 2nd equation, 
3x = 45
x = 15

Now, substitute it in 1st equation, 
15 + y = 42
y = 42 - 15 = 27

In short, Belt costs $15 and wallet costs $27

Hope this helps!
3 0
3 years ago
Read 2 more answers
Yall good at slope? if so, i need help
atroni [7]

Answer:

Undefined

Step-by-step explanation:

It's undefined since slope is based on the x coordinate, and since it doesn't change here there is none. It's also undefined because the line is vertical. Hope this helps :)

6 0
2 years ago
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Solve the following equation for x. 5/8x +4 = 3/8x + 12​
Rudik [331]

Answer:

X= 32

Step-by-step explanation:

5 0
3 years ago
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