Answer: He should have used 13 instead of 13i
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Hey There!
So these triangles are congruent so segment CD is equal to segment DB
so to find x we use the equation
7x+10=10x+7
now we solve for x
step 1 subtract each side by 7
10-7=3
7-7 cancels out
now we have 7x+3=10x
step 2 subtract each side by 7 x
10x-7x=3x
7x-7x= cancels out
now we have
3x=3
step 3 divide each side by 3
3/3=1
3/3 cancels out
now we have
x=1
Answer:
7
Step-by-step explanation:
Changing LHS as
Comparing LHS and RHS
Answer:
36
Step-by-step explanation:
21/9=84/x
x=84(9/21)
x=36
First do the exponents. 20*20=400. 3y is not the same type of number as the rest of them, so move on. (It might help to rearrange the equation: 400-2+3y.)
Subtract 2 from 400. This is 398. The answer is 398+3y.