When two negative numbers are added, the result is negative. Adding - 21 to - 49, it gives
- 21 + - 49 = - 21 - 49 = -70
The correct option is D
Answer:
Step-by-step explanation:
we know that
If BD bisects angle ABC
then
m∠ABD=m∠DBC
substitute the given values
Solve for x
Answer:
True
Step-by-step explanation:
x=5+7=12
The only solution is x=12.
Answer:
9x+8
Step-by-step explanation:
Given DS = 3x+10 and SE = 6x-2_ the value of DE is expressed as shown;
DE = DS+SE
Substitute the given functions into the formula to get DE
DE = (3x+10)+(6x-2)
Open the parentheses
DE = 3x+10+6x-2
Collect the like terms
DE = 3x+6x+10-2
DE = 9x+8
Hence the value of DE is 9x+8
Answer:
bh + L(S1 + S2 + h)
Step-by-step explanation:
b stands for the bottom edge of the base triangle
h is the height of the base triangle
L is the length of the prism
S1 and S2 are the two edges of the base triangle
bh is the combined area of the two triangular faces
L(S1 + S2 + h) is the area of the three rectangular side faces
