Answer:
80
Step-by-step explanation:
5 × 4 = 20
20 × 4 = 80
80 × 4 = 320
320 × 4 = 1280
Let's split it into rectange and tringle
BC= 2.1+ sqrt(3.2^2 - 1.9^2) = 4.67
Answer:
A. T=7.12°C; B. t=3.32min
Step-by-step explanation:
In order to find the answer we can use the Newton's law of cooling:
where:
y0=initial temperature - room temperature
k=coefficients
t=time
Because the outdoors temperature is 3°C, the initial temperature is 20°C, and because the thermometer reads 11°C after 1min we have:



A. Temperature after an extra minute.

so the answer is 7.12°C
B. Time in order to read 4°C



Answer:
No
Step-by-step explanation:
Relatively prime means that the only common factor the 2 numbers share is 1
factors of 16 are 1, 2, 4, 8, 16
factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40
common factors are 1, 2, 4, 8
Hence 16 and 40 are not relatively prime