Let the number be x.
2x + 15 = x + 23 | 15 added to 2x is equal to x increased by 23
x + 15 = 23 | Take away x from both sides
x = 8 | Take away 15 from both sides
Answer: The number is 8.
Given:
A deep sea diver started at sea level (0 feet).
Rate of diving = 5.6 feet per minute.
Time = hour
To find:
The rational number that represents his position relative to sea level.
Solution:
We know that,
1 hour = 60 minutes
hour = 30 minutes
A deep sea diver, dove at a rate of 5.6 feet per minute.
Distance covered in 1 minute = 5.6 feet
Distance covered in 30 minute = 30 × 5.6 feet
= 168 feet
The diver dove 168 feet in hour. Since it is below the sea level, therefore it should be negative.
So, the rational number that represents his position relative to sea level is feet.
Therefore, the correct option is D.
Answer:
0<4>-1/2
Step-by-step explanation:
Answer:
7 trays
Step-by-step explanation:
Given the , the z score is obtained using the formula:
The z score value for a 95% interval is 1.645.
#Substitute our z value and solve for x:
Hence, the bakery must prepare 7 trays of doughnuts .