Answer:
The correct answer is B- 21b+7bc
Step-by-step explanation:
7b(3+c)
(7b)(3+c)
(7b)(3)+(7b)(c)
21b+7bc
Answer:
7x+10 cm
Step-by-step explanation:
To find the perimeter add up all the sides
There are 5 sides
3x+ 5+ 2x+2x+5
Combine like terms
3x+2x+2x +5+5
7x + 10
The perimeter is 7x+10 cm
Answer: 26
Step-by-step explanation: he will have 4 red fish 15 black fish then you add them together 4+7=11 11+15=26
The answer is P=13 P-5+11=19
P=13
Multiply the first equation by -1 to use elimination method.
x-y=-7
6x+y=14
7x=7
x=1
Plug this x value in.
-1+y=7
y=8
Final answer: (1,8)
