Hi Mark
3x+y=4
2x+y=5
Solve 3x+y=4 for y
Add -3x to both sides
3x+y-3x=4-3x
y=-3x+4
Substitute -3x+4 for y in 2x+y=5
2x+y=5
2x-3x+4=5
Simplify both sides of the equation
-x+4=5
Add -4 to both sides
-x+4-4=5-4
-x=1
Divide both sides by -1
-x/-1= 1/-1
x=-1
Substitute -1 for x in y=-3x+4
y=-3x+4
y=(-3)(-1)+4
Simplify both sides of the equation
y=7
Answer: (-1,7)
I hope that's help ! Have a great weekend :)
The quotient of dividing the given fractions is 20/9.
Given that, 1 7/9=16/9 and 4/5.
From the given fractions we need to divide 16/9 by 4/5.
A fraction represents a part of a whole or, more generally, any number of equal parts.
The first step to dividingfractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed.
Now, 16/9÷4/5
Change ÷ to × and reciprocate 4/5 to 5/4.
Then, 16/9÷4/5=16/9×5/4=20/9
Therefore, the quotient of the given fraction is 20/9.
To learn more about the division of fractions visit:
brainly.com/question/17205173.
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Answer:
20/9
Step-by-step explanation:
16/9 * 5/4
4/9 * 5
20/9
11/12 divided by 3/4
Answer:
Hello my friend! The first step is to isolate the x and the 40 like this: x2 = 40.
Step-by-step explanation:
After you do that, you can perform the inverse operation of the x2, wich is the sqrt of 40. This way, you will have x=sqrt40 . X~=6.32
Answer:
The answer is B
Step-by-step explanation:
Answer:
Did not change.
Step-by-step explanation:
This is because the average is based off the total sum of all the constituents. Thus adding 10 and subtracting 10 doesn't change anything.
Answer:
2835x^5.
Step-by-step explanation:
By Binomial Theorem, T(r+1) = nCr * a^(r+1) * b^r.
Term 5 = 7C4 * x^5 * 3^4
= 35 * x^5 * 3^4
= 2835x^5.