Simplify the expressions 5r + 7 +2
2 answers:
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Answer:
x= 1.5, y= 3.5
or x= -5, y= 10
Step-by-step explanation:
Let's solve by substitution.
Label the two equations:
y= 2x² +6x -10 -----(1)
y= -x +5 -----(2)
Substitute (2) into (1):
2x² +6x -10= -x +5
2x² +6x +x -10 -5= 0
Simplify:
2x² +7x -15= 0
Factorise:
(2x -3)(x +5)= 0
2x -3= 0 or x +5= 0
2x= 3 or x= -5
x= 1.5
Now that we have found the value of x, we can find the value of y through substitution.
Substitute into (2):
y= -1.5 +5 or y= -(-5) +5
y= 3.5 or y= 10
Supplementary:
Do check out the following should you wish to learn more about solving quadratic equations!
We can convert 24/16 to a mixed number. It will be equivalent to 24/16.
24/16
24 ÷ 16 = 1.5
16 can go in to 24 once.
24 - 16 = 8
1 = whole number
8 = numerator
16 = denominator
Lets write our mixed number:-
This can be simplified ^^^^
So, our old mixed number simplified is
So, 24/16 is equivalent to 1., 2.
Hope I helped ya!!! xD
24/16
24 ÷ 16 = 1.5
16 can go in to 24 once.
24 - 16 = 8
1 = whole number
8 = numerator
16 = denominator
Lets write our mixed number:-
This can be simplified ^^^^
So, our old mixed number simplified is
So, 24/16 is equivalent to 1.
Hope I helped ya!!! xD
X = 6 and -6
if you need anything explained, please ask
if you need anything explained, please ask