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gogolik [260]
3 years ago
7

Its asks to solve each system by eliminating or substitution, and i dont know how to do it

Mathematics
1 answer:
ahrayia [7]3 years ago
4 0
There are 3 variables a,b and y.
You need 3 equations to solve for 3 variables.
You only have 2 equations listed.

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Factorise:<br> 3x3-3x2y+xy2-x2y
qaws [65]

3x^3-3x^2y+xy^2-x^2y

All terms have an x in them, so you factor that out first to get

x(3x^2 -4xy+y^2)

Now the 2nd degree equation will be of the form (3x- ... y)(x- ... y) and by just trying you find that the ... is just 1. So the factorization is:

x(3x - y)(x - y)

5 0
4 years ago
Rose has $426.00 in her checking account. 1⁄3 of her money will go toward bills. How
Alex Ar [27]

Answer:

<em>$284</em>

Step-by-step explanation:

First,<em> find 1/3 of 426 by multiplying 1/3*426</em>

With your answer <em>(142)</em>, subtract that from the total in your checking account.

<em>426-142=284</em>

This means, After withdrawing the amount she will use to pay bills, Her left over total will be <em>284 dollars.</em>

8 0
3 years ago
Read 2 more answers
Diane has $1.85 in dimes and nickels. she has a total of 23 coins. how many of each kind does she have? how many nickles? how ma
amm1812
The two equations for the set up are:
x+y=23 where x is the number of dimes and y is the number of nickles
10x+5y=185 
Now you solve by elimination and substitution.
Multiply your first equation by -5 and add the two equations together
-5x-5y=-115
+10x+5y=185
-------------------
5x=70
x=14

Substitute that into your original equation:
14+y=23
y=9

So you have 14 dimes and 9 nickles.

Hope this helps
5 0
3 years ago
Write twelve and five hundred ninety nine thousandths in standard form
MissTica


12,599,000

I think that's how u do it im not sure



8 0
3 years ago
Read 2 more answers
Select the approximate values of x that are solutions to f(x) = 0, wheref(x) = -9x^2 + 7x + 2
Natasha2012 [34]
F(x) = -9x^2 + 7x + 2
Factorising we get:

f(x) = (x + 1) (-9x + 2)

The solutions are x = -1 and 2/9ths
4 0
4 years ago
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