Jen, I will attempt to write the others out.
#3)ADD: -57 + (-22) I got -79
#4)Subtract -2.3-(-8.8) I got -6.5
#7)perform indicated operation:
-21 - (-9) I tried to underline
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-21 - (-21) I got -12 over o or undfined
#8)Multiply:(4){-3/2} This one lost me
#9) place in ascending order:
- 2/5, 1/6, 7/8, -5/9, 3/4
I got -5/9, -2/5, 1/6, 3/4,7/8
#10)Determine the maximum and minimum values of these numbers.
3, -36/7, -1, -2/3, 5/4, -5, 26/9
I got min. -5 1/7 max. 3
Evaluate: [-24] - [-22]
I got 2
#12)find the reciprocal of 1/7(-7-10)
I do not know how to do this one. Can you show me?
#13)Multiply: (1.3)(10)(-4)
I got -52
#14)perform indicated operation:
11-6
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7-7 I got 5/0 undefined
#15) subtract 7/9 - [-13/18] I was lost on this one
#16)multiply 13 * 7 I got 91
#17)divide: -15/-3 that should be underlined i got 5
#18)subtract: 36-14 i got 22
#19)divide: 12/-4 igot -3
#20)multiply:(10)(6)(-9) i got -540
#21)divide: -12/0 i got 0 or undefined
#22)add: 3/4 + 4/5 i got ig ot 31/20
#23)add: -4/5 + [-3/4] i am lost on this one
#24)evaluate -[-618] those are supposed to be bars instead of brackets
#25)find the reciprocal of (-1/5)(15) once again I am lost on that one. I really appreciate your help.
This homework is due today. Can anyone help me out? I have answered them to the best of my ability, they just need checked!!!!!
3: correct, 4: the two negative signs make a positive so your answer is positive 6.5, 7: I do not understand the problem written that way, 8: (4)(-3/2)= (4/1)(-3/2)=-12/2=-6, 9: correct, 10: correct but keep it in the format that's given in the problem so you should list the min as -36/7, 11: Once again, you need to change your sign. Two negative signs together make a positive, so the problem becomes -24+22=-2..will post the rest in a few
12. 1/7(-7-10), always do parenthesis first, so -7-10=-17, then do 1/7(-17) and when you get that answer flip it for the reciprocal (the reciprocal of 2/3 is 3/2 and vice versa, the reciprocal of 4 is 1/4). 13, 14 correct, 15. 7/9-(-13/18)= 7/9+13/18, find the common denomintor which equals 18, 14/18+13/18=27/18=1 9/18= 1 1/2, 16-21: correct, 22: 3/4 + 4/5= 15/20+16/20=31/20=1 11/20, 23, 25: based on the steps i've shown you for the ones like this, you should be able to do these by now, post if you would like them checked, 24: -618
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I'll help you work through the remaining questions:
#12) To find the reciprocal of a number, you simply take the reciprocal of that number. In this case, the reciprocal of (-1/7) would be -7/1:
Reciprocal of (-1/7) = -7/1 = -7
#15) To subtract fractions, you need to get a common denominator. In this case, the common denominator is 18:
7/9 - [-13/18]
= 7/9 + 13/18 (After changing the sign of the second fraction)
Now, to get a common denominator, we multiply the numerator and denominator of the first fraction by 2:
(7/9) * (2/2) - 13/18
= 14/18 - 13/18
Now, you can subtract the two fractions:
= (14 - 13)/18
= 1/18
So, 7/9 - [-13/18] = 1/18
#23) To add fractions, you need a common denominator. In this case, the common denominator is 20:
-4/5 + [-3/4]
To get a common denominator of 20, we multiply the numerator and denominator of the first fraction by 4, and the numerator and denominator of the second fraction by 5:
(-4/5) * (4/4) + (-3/4) * (5/5)
= -16/20 + (-15/20)
Now, you can add the two fractions:
= (-16 - 15)/20
= -31/20
So, -4/5 + [-3/4] = -31/20
#24) To evaluate the absolute value of a number, you simply remove the negative sign if it is present. In this case, the absolute value of -618 would be 618:
Absolute value of -[-618] = 618
#25) To find the reciprocal of a number, you divide 1 by that number. In this case, the reciprocal of (-1/5)*(15) would be:
Reciprocal of (-1/5)*(15) = 1 / [(-1/5)*(15)]
First, simplify (-1/5)*(15):
(-1/5)*(15) = -15/5
Now, divide 1 by (-15/5):
1 / (-15/5) = (1 * 5) / (-15)
= 5 / (-15)
= -1/3
So, the reciprocal of (-1/5)*(15) is -1/3.
I hope this helps! Let me know if you have any further questions.