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alina1380 [7]
3 years ago
9

-21+2(3-15)-(-3)(+7)+(-3)(-8)​

Mathematics
2 answers:
Pani-rosa [81]3 years ago
6 0
Simplify the expression

Answer - Zero


Hope this helps

Have a great day!
xxTIMURxx [149]3 years ago
4 0
The answer is 0 I think its been a while since I’ve done math
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Ostuni evaluated -4 + x for x = -9 1/2 and got an answer of 5 1/2. What might the student have done wrong?
Sav [38]
The student added 9 1/2 instead of adding -9 1/2
8 0
3 years ago
Departure: 11:30 A.M. <br> Arrival: 2:05 P.M.<br> Travel time: ?
Helen [10]
2 hours and 35 minutes is the travel time.
5 0
3 years ago
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If 1800ml of a juice drink is 15% grape juice, how much grape juice should be added to make a drink that is 20% grape juice?
Svetach [21]

Answer:

  112.5 mL

Step-by-step explanation:

Let x represent the amount of grape juice to add. Then the total amount of grape juice in the mix is ...

  0.15(1800) +x = 0.20(1800+x)

  270 +x = 360 + 0.2x . . . . . . eliminate parentheses

  0.8x = 90 . . . . . . . . . . . . . . . subtract 270+0.2x

  x = 90/0.8 = 112.5 . . . . . . . . divide by the coefficient of x

112 mL of grape juice should be added to make a mix that is 20% grape juice.

7 0
4 years ago
2. Tim started feeding his dog a new brand of dog food. After the first six
shutvik [7]

Answer:

0

Step-by-step explanation:

he had lost and gained 2 pounds so he netheir gained nor lost pounds

5 0
3 years ago
Help pleaseeee i need it
zzz [600]

Answer:

The midpoint of Line Segment AB = (-0.5, 0)

Step-by-step explanation:

<u><em>Given data:</em></u>

Point A: (-2, 1)

Point B: (1, -1)

<u><em>Use the midpoint formula:</em></u>

<u><em></em></u>\frac{x1 + x2}{2} ;  \frac{y1 + y2}{2}

<u><em>Solve:</em></u>

-2 + 1  / 2    ;   1 + -1 / 2

-1/2      ;   0/2

Answer: (-0.5, 0)

<em>hope this helps and is right! p.s. i really need brainliest :)</em>

<em></em>

5 0
3 years ago
Read 2 more answers
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