1.
(3/4)^2 = (3/4)* (3/4)
(3/4)*(3/4)= 9/16
Final answer: 9/16
2.
11+6.4= 17.4
Final answer: 17.4
3.
9.5-2.8= 6.7
Final answer: 6.7
1 because negative 4 plus 5
Answer:
45.2
Step-by-step explanation:
the tenths is the first number to the right after the decimal
The estimated portion of light bulbs that last more than 500 hours will be
x=∑xn=224/430=0.521=52.1%