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3 years ago

can someone please understand how to add and subtract negative numbers? such as 2 - (-3)= or -7 + 4=

Mathematics

2 answers:

Aleks04 [339]3 years ago

7 0

Answer:

2 - (-3) is 5 because (-) × (-) is (+)

And for -7 + 4 is 3 because (-) × (+) is (-).

Arlecino [84]3 years ago

6 0

Answer:

2-(-3)=2+3=5

-7+4=-3

Step-by-step explanation:

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3 years ago

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A. Two orders for birthday parties come in and you are responsible for getting the order ready. Both orders ask for 192 ounces o

Colt1911 [192]

Answer:

Step-by-step explanation:

this should be easy cause the 64 is bigger, so the parts are smaller. 192 divided by 64 is 3. 192 divided by 12 is 16. multiply, Yada yada… you get 64 is better!

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3 years ago

Plz help asap.. I have no idea how to do this.

kondor19780726 [428]

Answer:

286

Step-by-step explanation:

Use term formula for +/-

Tn = a + (n-1)d

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3 years ago

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Write a quadratic equation ax²+ bx + C = 0, whose coefficients are a =-9, b = 0, c = -2

aksik [14]

Let's write -9 where we see A:

Let's write 0 where we see B:

(Since B = 0, when it is multiplied by x, it becomes 0 again)

Let's write -2 where we see C:

Now we can move on to solving our equation:)

Let's put the known and the unknown on different sides:

(-2 goes to the opposite side positively)

(it goes as a division because it is in the case of multiplying -9 across)

 

I could not find the rest of it, but I did not want to delete it for trying very hard. Sorry. It felt like we should take the square root, but I couldn't find it, maybe this can help you a little bit.

Please do not report:(

I hope I got it right, I'm trying to improve my English a little :)

<h3>Greetings from Turkey:)</h3>

<h3>#XBadeX</h3>

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3 years ago

fred had a tray of brownies for his birthday. he ate 1/6 of the brownies by himself and his family ate 1/3 of the brownies how m

snow_lady [41]

We want to know how many brownmies did Fred and his family eat together.

We will call to the total of the brownies by 1. On this case, after Fred ate 1/3 of the brownies, he will have:

$1-\frac{1}{3}=\frac{3-1}{3}=\frac{2}{3}$

This means that he has left 2/3 of the brownies. After his family ate 1/6 of the brownies:

$\frac{2}{3}-\frac{1}{6}=\frac{4}{6}-\frac{1}{6}=\frac{3}{6}=\frac{1}{2}$

This means they will have left 1/2 of the tray of brownies, and that they ate half of it.

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1 year ago