x=-3, y=1
Step-by-step explanation:
Given equations are:
2x-3y=-9 Eqn 1
x+y = - 2 Eqn 2
From eqn 2:
Putting x=-y-2 in eqn 1
Hence,
x=-3, y=1
Keywords: Linear equations, Variables
Learn more about linear equations at:
#LearnwithBrainly
a.)AnB b.)AUB
Answer:
9?
Step-by-step explanation:
Simplest form of given expression, is -11/10
A number that has a whole number and a fractional component separated by a decimal point is a decimal. The decimal point is the dot that appears between the parts of a whole number and a fraction.
Given expression, can be solved as follows:
Take the LCM of denominator, LCM of 2 and 5 is 10.
Multiply first number by 5 and second number by 2 as follows:
Thus, in its simplest form, is -11/10
Learn more about fraction, here:
#SPJ6
Much money did
Shally have at first?
I'm curious as to how a wrong answer can be a "verified answer." What is BRAINLY's process for verification?
You can see an error in the "verified answer" here:
"Amount of money that Katherine now has = [(x/3) + 68]"
No. If X is the amount of money Katherine had, and she gave away 1/3, then she has 2/3(x). And the +68?
Shelly's dad gave that $68 to Shelly, not to Katherine.
The answer my son and I came up with was $21. We used bar models since they aren't teaching 2-variable algebra in 5th grade. But here's the logic.
We know what Katherine and Shelly collectively now have $356 ($288 + $68 from the dad).
They have equal amounts now, so they each have $178. Half of that is $89, which is significant since we need to find the value of the "thirds" that constitute Katherine's original amount. She has two of those thirds left and each of the two is worth $89 (half of what she has now). This is really where the bar model method helps to visualize, by the way.
Now we now how much Katherine gave Shelly: $89 (same value as each of the other two, equal thirds of Katherine's original amount).
If we know that the $178 Shelly has now is made up from the $89 that Katherine gave her, plus the $68 her dad gave her, plus whatever mystery amount she started with, we can do $178 - ($68 + $89) and get $21.
Let's verify this answer right here:
Katherine started with $267 and Shelly started with $21.
Katherine gave Shelly $89 (1/3) of her money.
Katherine now has $178 ($267 - $89) and Shelly now has $110 ($21 + $89).
Shelly's dad gave her another $68. Now they both have $178.