Answer:
Step-by-step explanation:
Not sure about this but it looks like we subtract 1 from the first number then add 3 times the difference in the example (N) to get each subsequent number so the Z part is in 1:
10-1 = 9 and second value is 9 + 3*(15-10) = 24 and third is 24 * 3*18 = 78 and so on.
So 1 is:
9 24 78 141
The others are worked out in the same way:
so 2 is
5 44 107 173
-3(x-1)+8 (x-3)=6x+7-5
-3x+3 + 8x-24= 6x+2
5x-21=6x+2
(subtract 5x from both sides)
-21=1x+2
(subtract 2 from both sides)
-24=x
I hope this helps love! :)
Answer:
Sarita’s solution is correct. She made an error in her verification. Sarita was supposed to add the 5 and 7 in the first step.
Step-by-step explanation:
Given the following equation:
The steps to solve it are:
5(x-3)+7(x+4)-73
1. Apply the Distributive property:
5x-15+7x+28=73
2. Add the like terms:
12x+13=73
3. Subtract5 13 from both sides of the equation:
12x+13-(13)=73-(13
12x=60
4. Divide both sides of the equation by 12:
12r/12 = 60/12
x = 5
To verify it, let's substitute into the equation:
5(5-3)+7(5+4)=73
Evaluating, we get:
5(2)+7(9)=73
10+63=73
73=73
Based on this, we can determine that Sarita's solution is correct, but she made an error in her verification (Observe that 5-3 is not equal to -2 )
Since both of the equations are equal to y...set them equal to each other.. So it will then be
x^2+3=x+5
-3 -3
x^2=x+2 ---> x^2-x-2
(x-2) (x+1)
x=2,-1
