Here we are given the expression : z+ (z+6)
In this we will use the concept of like terms.
Like terms are terms whose variables (and their exponents such as the 2 in x²) are the same. In other words, terms that are "like" each other.
so here we have z and z which have same exponent which is 1.
So we can say that z and z are like terms.
So adding z and z we get 2z
so our expression becomes 2z+3
Now we may use distributive property here which is :
ab + ac = a(b+c)
where "a" is gcf of the two terms.
so in our expression 2z+6 , gcf is 2
taking 2 common out we have 2(z+3).
So answer is option c) 2(z+3).
True/False questions = 2 points each(x).
Multiple choice questions = 3 points each(y).
She needs more than (>) 90 points.
2x + 3y > 90
Answer:
Step 2: 20x = 80 + 10x
Step-by-step explanation:
Step 1: 20x - 10 = 80 + 10x
Add 10 to each side
20x - 10+10 = 80+10 + 10x
20x = 90 + 10x
Step 2: 20x = 80 + 10x This has the first error
Step 3: 10x = 80
Step 4: x= 8
9. Area of a triangle is proportional to height. If the height increases by a factor of 4, then ...
The area will increase by a factor of 4. . . . . (2nd selection)
10. The base lengths and height are needed:
• 5 mm
• 8 mm
• 10 mm
