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SpyIntel [72]
3 years ago
8

Practice: Activating Prior Knowledge

Mathematics
1 answer:
Elena-2011 [213]3 years ago
4 0
Scientific notation is used to write really large numbers, or really small numbers using less digits. For example: 

1. Earth's distance from the sun 150,000,000 kilometers. We can rewrite this in scientific notation as 1.5 x 10^{8}

2. The length of a skin cell is 0.00003 meters. We can rewrite this in scientific notation as 3.0 x 10^{-5}

3. The world population is about 7,000,000,000. We can rewrite this in scientific notation as 7 x 10^{9}
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Mr. Engen rented a car for 35.00 a day and 0.45 a mile . He had the car for 2 days and paid 166.75 . How many miles did he drove
liubo4ka [24]

d = days rented for

m = miles driven for

so the cost of the car is 35 bucks a day and 45 cents or $0.45 per mile driven, let's check it out for say a few days

1st day, 3 miles......................35(1) + 0.45(3)

2nd day, 2 miles..................35(2) + 0.45(2)

3rd day, say 5 miles............35(3) + 0.45(5)

dth day, and m miles..........35d + 0.45m

so the cost function could be written as C = 35d+0.45m.

now, we know for 2 days, d = 2, it cost 166.75 bucks, so

\bf C=35d+0.45m\implies \stackrel{C}{166.75}=35(\stackrel{d}{2})+0.45m\\\\\\166.75=70+0.45m\implies 96.75=0.45m\\\\\\\cfrac{96.75}{0.45}=m\implies 215=m

7 0
3 years ago
3(3b +2)=-30 what is b =
ycow [4]
3(3b+2)=-30  perform indicated multiplication on left side...

9b+6=-30  subtract 6 from both sides

9b=-36  divide both sides by 9

b=-4
4 0
3 years ago
Someone please say the correct answer!
algol [13]
2nd, 4th, and 5th answers are correct
8 0
3 years ago
Randy won 36 out of 54 games of tic tac toe. what percent of the games did he win
Archy [21]
36/54 = x/100

54x = 100 * 36
54x = 3600
x = 3600 ÷ 54
x = 66.666666.... so 66.67

First put it into a proportion and then cross multiply. After that you divide both sides by 54 to get x alone which gives you 66.66666 which is rounded to 66.67

Answer: 66.67%
7 0
3 years ago
Read 2 more answers
. Office productivity is relatively low when the employees feel no stress about their work or job security. However, high levels
Ray Of Light [21]

Answer:

Step-by-step explanation:

The plot chart below best represents the relationship between stress and productivity in the workplace. As seen in the chart both high and low levels of stress equate to very low productivity levels for employees in the workplace. While just enough stress creates very productive employees. This tends to be because employees are worried about the possibility of losing their jobs so they work hard in order to keep the job but are not so worried that they think it will happen tomorrow and become burned out.

3 0
3 years ago
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