For systems of equations try using graphing, substitution, and elimination. For example
{2x+7y=3}
{x=-4y}
You should first look at if you have a variable that can be substituted (using substitution) and in this case we do! you plug in the x into 2x meaning 2(-4y)+7y=3
1) distribute -8y+7y=3
2) combine like terms in this case -8y+7y= -1y
3) solve -1y=3
y=-3
so currently our solution is (0,-3)
now we solve for x.
we plug our solved variable (y) into 7y
7(-3) and our equation looks like this
2x+7(-3)=3
1) distribute 7(-3)=-21
2) rewrite then solve 2x+(-21)=3
3) isolate variable -21+21 & 3+21
4) 2x=24
5) solve 2/24 = 12
Meaning our solution is (12,-3)
This is how to solve by substitution.
Answer:
Step-by-step explanation:
Step-by-step explanation:
just count off the positions after the decimal point.
they go with decreasing negative exponents of ten.
the first position is 1/10.
the second 1/100.
the third 1/1000.
the fourth 1/10000
the fifth 1/100000
and that is how we can easily convert such decimals into fractions.
0.63333 = 63333 / 100000
or were you looking for the infinite decimal ?
that would be 1.9/3 = 19/10 / 3 = 19/30
I found this by simply suspecting that there is a division by 3 involved (due to the 3333333 repeating pattern).
so, by multiplying 0.63333 by 3 we get 1.9.
1.9 = 19/10
and then dividing by 3 gives us 19/30
(r*s) = (x+1)(3x+4) = 3x² + 3x + 4x + 4 = 3x² + 7x + 4
(r-s)(x) = x+1 - (3x+4) = x + 1 - 3x - 4 = -2x - 3
(r+s)(x) = x + 1 + 3x + 4 = 4x + 5
(r + s)(2) = 4(2) + 5 = 8 + 5 = 13
<h3>What is algebraic expression?</h3>
A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression. Two expressions joined by an equal sign form an equation. Word illustration: The product of 8 and 3. Word illustration: The product of 8 and 3 is 11
to learn more about algebraic expression refer to:
brainly.com/question/4344214
#SPJ9
A(2,6) translation <span>A=(4,-5)
4 - 2 = 2
-5 - 6 = -11
rule
(x) --->(x + 2) (shifted 2 units to the right)
(y) --->(y - 11) (shifted 11 units down)
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