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Margarita [4]
3 years ago
12

Which equation is equivalent to x2+10x+2=0 ?

Mathematics
1 answer:
Svet_ta [14]3 years ago
4 0
<span> x =(10-√92)/2=5-√ 23 = 0.204 or </span><span><span>x =(10+√92)/2=5+√ 23 = 9.796 </span> </span>
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132 books are printed in 2 hours, 264 books are printed in 4 hours, and 528 books in 8 hours, how many books are printed in 3 ho
maxonik [38]
So the unit rate is 66:1
then you do 66*3=198
198:3
then you do the same thing 66*7=462
462:7
lastly you do 66*15=990
990:15
3 0
3 years ago
If a distribution has a mean of 25 and a standard deviation of 2, what value would be −4 standard deviations from the mean?
Harlamova29_29 [7]
25 +(-4)*2 = 17

A value of 17 is -4 standard deviations from the mean.
7 0
3 years ago
Abby sold half of her comic books and then bought seventeen more. She now has 32. With how many did she begin?
Art [367]

Answer:

15 because 32 - 17 = 15

Step-by-step explanation:

3 0
3 years ago
Julie, a police officer, has the following work pattern. She works 3 days, has 4 days off, then works 4 days, then has 3 days of
zalisa [80]

Answer:

See below.

Step-by-step explanation:

For each day number, Y means working, and N means off

Day

1   Y

2   Y

3   Y

4   N

5   N

6   N

7   N

8   Y

9   Y

10   Y

11   Y

12   N

13   N

14   N

15   Y

16   Y

17   Y

18   N

19   N

20   N

21   N

22   Y

23   Y

24   Y

25   Y

26   N

27   N

28   N

29   Y

30   Y

31   Y

32   N

33   N

34   N

35   N

36   Y

37   Y

38   Y

39   Y

40   N

41   N

42   N

43   Y

44   Y

45   Y

46   N

a. Today is day 1. 30 days from today is day 31.

She works on day 31, so she does work 30 days from today.

b. 45 days from today is day 46. She is off on day 46, so she will be off 45 days from today.

8 0
3 years ago
Read 2 more answers
Seven times a number is 5600. what is the number?
Vika [28.1K]
To do this you need to work backwards. if you note the number as 'n' you can put
 7n = 5600
to find n you simply divide both sides by 7 getting
n = 5600/7 
n = 800
5 0
3 years ago
Read 2 more answers
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