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AnnZ [28]
3 years ago
8

Can someone please teach me how to add, subtract, multiply and divide negative numbers?

Mathematics
2 answers:
valkas [14]3 years ago
7 0
1) Since both the number are negative the answer will he negative. You can add then like normally so 4+5=9 but you can't forget the negative sign so the answer comes to -9.

2) With this equation it's more difficult since you have a positive and a negative. Since 30 is bigger than 17 the answer will end up being positive. Which ever number is bigger will determine if it's positive or negative. You subtract like normally so, 30-17=13 your answer.

3) Combine all your like terms. So all your negatives. -3-8=-11. The equation then reads -11+4-7. You combine -11-7=-18. The equation then reads -18+4 and since -18 is bigger the answer will be negative. -18+4 equals -14.

Hope this helps

dedylja [7]3 years ago
3 0
If both numbers are negative u add those up and ur answer will be a negative. so number one is negative 9.
if there is more positive ur answer will be a positive. so number 2 is 13.
number is more complicated so negative 3 +4 is 1 because u have more positive and u just subtract those then 1 minus 8 equals negative 7 and negative 7 minus 7 is 0. hope this helps
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Kasey and Jordan are counting calories while eating lunch in the school cafeteria. in one week, Kasey had 10 slices of pizza and
svetoff [14.1K]

Answer:

222 calories from the pizza

Step-by-step explanation:

nandhini123-

Given:

slices of pizza ate by Kasey =10

cups of fruit salad by Kasey=  5

slices of pizza ate by Jordan = 6

cups of fruit salad by Jordan=  7

Kasey's calorie  count = 3070

Jordan calorie  count = 2522

To Find:

calories Jordan got from pizza =?

Solution:

Let the calorie of one slice of pizza be  x

and the  calorie of one cup of fruit salad be  y

According to the question, the equation that represents the Kasey's Scenario is

10x + 5y = 3070-------------------------------------(1)

Similarly the equation that represents the Jordan Scenario is

6x + 7y = 2522--------------------------------------(2)

multiply eq(1) by 6 we get

60x + 30y = 18420---------------------------------(3)

multiply eq(2) by 10 we get,

60x + 70y = 25220----------------------------------(4)

Subtracting eq (3) from (4) we get

 60x + 70y = 25220

 60x + 30y = 18420

 (-)        (-)        (-)

-----------------------------------

0x + 40y = 6800

---------------------------------

=>40 y = 6800

=>y =

=> y = 170

So calorie of one cup fruit salad is = 170 calories

substituting the y values in eq 1 we get

10x + 5(170) = 3070

10x + 850 = 3070

10x = 3070 - 850

10x = 2220

x =

x= 222

So calorie of one pizza slice = 222 calories

Now we know that  Jordan ate 6 slices of pizza

calories  Jordan get from pizza = number of pizza he ate  X calore per pizza slice

=> 6 x 222

=>1332 calories

Brainliset plz

8 0
2 years ago
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Gnesinka [82]
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3 years ago
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Pani-rosa [81]

Answer:

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Step-by-step explanation:

As we can see, Sue's survey was perfectly random and without any prejudice.

18% of the families, according to her research, would volunteer at the shelter. According to her, 18% of the local households should be required to volunteer at the animal shelter.

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2 years ago
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Answer:

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I hope it helps you

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Step-by-step explanation:

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so here it was 32/0.8

hope it helps

3 0
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