Answer:
6x + 2y =5
y + 3x= 2
Step-by-step explanation:
Sarah's 10 years old.
Antonio's 2 years old.
2 x 2 = 4
10 x 3 = 30
4 + 30 = 34
2 x 5 = 10
Answer:
Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 0.6
The ordered pairs are: (100, 135) and (500, 375)
The first number is the number of minutes of usage and the second number is the charge of the month.
The slope is: ( 375 -135) / (500 - 100) = 240/400 = 0.6
Step-by-step explanation:
Changes made to your input should not affect the solution:
(1): "x2" was replaced by "x^2".
STEP
1
:
x2 + x - 20
Simplify ———————————
x - 4
Trying to factor by splitting the middle term
1.1 Factoring x2 + x - 20
The first term is, x2 its coefficient is 1 .
The middle term is, +x its coefficient is 1 .
The last term, "the constant", is -20
Step-1 : Multiply the coefficient of the first term by the constant 1 • -20 = -20
Step-2 : Find two factors of -20 whose sum equals the coefficient of the middle term, which is 1 .
-20 + 1 = -19
-10 + 2 = -8
-5 + 4 = -1
-4 + 5 = 1 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -4 and 5
x2 - 4x + 5x - 20
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-4)
Add up the last 2 terms, pulling out common factors :
5 • (x-4)
Step-5 : Add up the four terms of step 4 :
(x+5) • (x-4)
Which is the desired factorization
Canceling Out :
1.2 Cancel out (x-4) which appears on both sides of the fraction line.
Final result :
x + 5
