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3 years ago

Evaluate the expression -15 - -12

Mathematics

2 answers:

Scorpion4ik [409]3 years ago

7 0

Answer:

-3

Step-by-step explanation:

-15 - -12

(the two negitives make a positive which gives you...)

-15 + 12 = -3

Leni [432]3 years ago

4 0

Answer: -3

Step-by-step explanation: To subtract the integers -15 - (-12), it's important to understand that when we have minus a negative, we can change it to plus a positive so -15 - (-12) becomes -15 + (+12).

So starting at 0 on our number line, -15 moves us 15 units to the left and +12 moves us 12 units back to the right and we end up at -3.

So -15 - (-12) or -15 + (+12) is -3.

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Romashka [77]

we have

<u>The system of equations</u>

$y=-3x+6$ -------> equation $1$

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the answer is

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Could someone please help me with this question??

weqwewe [10]

Answer: 26 cups will fit in a dispenser that is 30 cm high.

Step-by-step explanation:

First of all, we know that the first cup in the stack (the bottom cup) will be ten centimeters high, and we know that for every cup that is added on top of that, .8 centimeter will be added to the height. So, if we want to find how many cups will be in the dispenser we do this simple math:

30 - 10 = 20 Because the first cup is ten centimeters, we have to subtract that from the dispenser height.

20/.8=25 To find how many cups will be stacked on top of the first cup, we divide the remaining height by .8, the height of every other cup.

Now that we know that there will be 25 cups stacked on top of the first, we add the bottom cup to the rest of them.

25 + 1 = 26 Cups.

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