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torisob [31]
3 years ago
11

The winning car in a race beat the second car by 19/100 of a second. The third car was 4/10 of a second behind the second car. B

y how much did the first car beat the third car?
Mathematics
1 answer:
Neko [114]3 years ago
8 0
20/5 should be correct
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7 times b reduced by the square of c?
alisha [4.7K]

Answer:

7b-c²

Step-by-step explanation:

7times b is 7b reduced by the square of c means minus c²

3 0
2 years ago
(5x to the power of 2 -6x+2)+9x to the power of 2 +10x-7)
xxTIMURxx [149]

Answer:

45x^{4} -4x^{3} -77x^{2} +62x-14

Step-by-step explanation:

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6 0
2 years ago
A bakery sold 115 cupcakes in one day. The head baker predicted he would sell 95 cupcakes that day. What was the percent error o
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It was about 17.4% 
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% error=
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5 0
3 years ago
Suppose the scores of students on an exam are normally distributed with a mean of 244 and a standard deviation of 79. According
Ahat [919]
244 - 165 = 79 . . . . one standard deviation
323 - 244 = 79 . . . . one standard deviation

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3 0
3 years ago
Can someone please answer this question please answer it correctly please show work
netineya [11]

Answer:

Actual mean: 223 pages

Predicted mean / estimate: 225 pages

Explanation below

Step-by-step explanation:

Mean = total amount ÷ # of numbers

155 + 214 + 312 + 198  + 200 + 170 + 250 + 260 + 215 + 256

Add

2,230

# of numbers = 10

2,230 ÷ 10 = 223

The exact mean is 223

If I were to predict the mean, I would say that a good estimation would be around 225, because I see that the highest number in the data set is 312, and the lowest is 155. If 312 is rounded down to 300, and 155 is rounded down to 150, the number exactly in the middle of 300 and 150 is 225.

Actual mean: 223 pages

Predicted mean: 225 pages

Hope this helps :)

7 0
3 years ago
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