I believe i can help:
the formula for right triangle area:
1/2bh
plug in the numbers that are given:
1/2(15)(8)
simplify:
1/2(120)
60 = triangle area
the formula for a rectangle:
bh
plug in the numbers that are given:
(19)(8)
simplify:
152 = rectangle area
now add the two shape’s areas and you have your final answer!
152 + 60 =
212ft
Answer:
Step-by-step explanation:
(3x^2 + 2x) + (-x + 9) Remove the brackets
3x^2 + 2x - x + 9 Watch out for the sign in front of the x
3x^2 + x + 9 No more reduction can take place.
(-2x^2 + 5x - 7) + (3x + 7) Remove the brackets
-2x^2 + 5x - 7 + 3x + 7
-2x^2 + 5x + 3x - 7 + 7 Combine
-2x^2 + 8x The 7s cancel -- they are of opposite signs.
No more reduction can take place. The powers on the variables have to be equal before any cancelation can take place.
Answer:
170
Step-by-step explanation:
Let the number of cell phones be x
2 : 3 = 68: x
Product of extremes = product of means
2 * x = 68 * 3
x =
= 34 * 3
x = 102
Number of phones = 102 + 68 = 170