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ICE Princess25 [194]
4 years ago
12

without using a calculator,determine the sum of all the intergers from -50 to +50 describe you're strategy

Mathematics
1 answer:
LUCKY_DIMON [66]4 years ago
5 0
Think about it:
-50+50=0
-49+49=0
-48+48=0
...and so on

You're going from both sides so the sum of all the integers from -50 to 50 is zero.  
You might be interested in
(−2/3)x(5/4) help plz
avanturin [10]

Answer:

-\frac{5}{6}

Step-by-step explanation:

  1. Write it out: -\frac{2}{3} × \frac{5}{4}  
  2. 3 × 4 = 12
  3. -2 × 5 = -10
  4. Put them together: -\frac{10}{12}  
  5. Simplify: -10/12 = -5/6

I hope this helps!

8 0
4 years ago
Read 2 more answers
Sue wants to increase 160 by 4%
ivann1987 [24]

Answer:

a) To increase 160 by 4% we multiply by 1.04

b) To decrease 160 by 6% we multiply by 0.94

Step-by-step explanation:

a) Here we have to increase 160 by 4% we are to note that;

4 \% = \frac{4}{100} = 0.04

Therefore, increasing 160 by 4% is to add additional 0.04×160 to 160

That is 160 + 0.04×160 = 160×(1 + 0.04) = 160×1.04

Therefore Sue should have multiplied 160 by 1.04 to increase 160 by 4%.

b) Here to decrease 160 by 6%, we subtract 6% of 160 from 160 that is;

Decrease 160 by 6% = 160 - 160×0.06 = 160×(1 - 0.06) = 160 × 0.94 = 150.4

Hence to decrease 160 by 6% we multiply by 0.94.

8 0
4 years ago
One number is 11 more than 3 times another number. Their sum is 75. Find the smaller number.
Musya8 [376]
X = larger number, y = smaller number

x + y = 75
x = 3y + 11

3y + 11 + y = 75
4y + 11 = 75
4y = 75 - 11
4y = 64
y = 64/4
y = 16 <=== ur smaller number

x = 3y + 11
x = 3(16) + 11
x = 48 + 11
x = 59...ur larger number
5 0
3 years ago
Robby ate 5 potato chips. Jimmy ate p times as many potato chips as Robby. Which expression shows how many potato chips Jimmy at
mario62 [17]

Answer:

5p

Step-by-step explanation:

Since Robby ate 5 potato chips and Jimmy ate p times that then you have to multiply them together.

Our final expression is 5p.

Hope this helped :)

8 0
3 years ago
Factor 2x^2 - 2x - 12
Pavlova-9 [17]

Factor the polynomial.

2(x−3) (x+2)

How to get the answer:

Factor 2x^2−2x−12

2x^2−2x−12

=2(x+2)(x−3)

Answer: 2(x+2)(x−3)

8 0
3 years ago
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