A drop in temperature of 9 degrees overnight
1 answer:
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Answer:
1. 8.4 2. 15
Step-by-step explanation:
1. 4x+8y= 40
wen y= 0.8
4x+8×0.8=40
4x=40-8×0.8
4x= 40- 6.4= 33.6
....x= 33.6/4 = 8.4
2. 3a+b= 54
wen b= 9
3a+ 9= 54
3a= 54- 9
3a=45
.....a = 45/3 = 15
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Answer:
S(t) = 1000(0.729)^t
Step-by-step explanation:
S(t) = 1000(0.9)^(3t)
S(t) = 1000((.09)^(3))^t
S(t) = 1000(0.729)^t
Correct me if i'm wrong, but i think it's b, since you add the exponents and keep the 4 the same.
The group needs 3 pizzas because:
9(people) x 2(slices) = 18
6(slices per pizza) x 3(pizzas) = 18
It is 86%. You can just subtract them lol
