Answer:
1. 11
2. 17
3. 10
4. 9.1
5. 13
Step-by-step explanation:
1. 2(4)+3
8+3=11
2.-5(-2)+7
10+7=17
3. 1.5(9)-3.5
13.5- 3.5 =10
4.0.3(-2)+9.7
-.6+9.7= 9.1
5. -3/4(-4)+10
3+10=13
Answer:
- 8° per hour
Step-by-step explanation:
Given that:
Station A = - 6°
Station B = 2°
Rate of temperature change = x° / hour ; which is the same at both stations
Temperature at station A 3 hours after the recording is the same as the temperature in station B 4 hours after the recording ;
Temperature change in Station A:
-6 + 3x
Temperature change in station B:
2 + 4x
Temperature change in A = temperature change in B
-6 + 3x = 2 + 4x
Collect like terms
3x - 4x = 2 + 6
- x = 8
x = - 8
Hence, the rate of temperature change x in both stations is - 8° per hour
Someimes becasue either x or y could be obtuse.
Add 3 standard deviations above and below the mean to get the range in which 99.7% of the data in a normal distribution will fall
6.5 + 4.5 = 11
6.5 - 4.5 = 2
So 2 to 11 ounces would be the interval
