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Serggg [28]
3 years ago
15

Hey guys, I'm relearning some Algebra and was confused about this problem. In the equation, the problem was divided by 3. This m

akes sense because its easier to work with smaller numbers. However, after that the negative signs swapped. Why does this happen? I remember switching signs years ago when I learned it but now I can't remember the rule as to why. Thank you so much.

Mathematics
2 answers:
GuDViN [60]3 years ago
7 0

Answer:

That's optional

Step-by-step explanation:

Dealing with positive numbers is simpler that's why the equation was divided by -3.

Nonetheless, you can use:

-6x² - 5x + 1 = 0 too

You will get the same answer

D = (-5)² - 4(-6)(1)

D = 25 + 24 = 49

x = [-(-5) +/- sqrt(49)]/(2×-6)

x = [5 +/- 7]/(-12)

x = -2/-12 = ⅙

x = 12/-12 = -1

spayn [35]3 years ago
4 0

Answer and Step-by-step explanation:

The signs didn't really "swap". Instead, the whole function was divided by -1, or we could say the function was divided by -3. That would turn:

-18x² - 15x + 3 = 0

into

(-18 / -3)x² - (15 / -3)x + (3 / -3) = 0

6x² + 5x - 1 = 0

And that gives the "swapped signs".

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William has 24 24 cans of fruit and 60 60 cans of vegetables that he will be putting into bags for a food drive. He wants each b
Snezhnost [94]

Answer:

William will make 12 bags of food and each of the bag will contains 2 cans of fruit and 5 cans of vegetables.

Step-by-step explanation:

Given:

Number of fruits cans = 24

Number of veggies cans = 60

William will have to distribute them in equal bags with equal cans of fruits and vegetables respectively.

For this:

We have to find the GCF (greatest common factor) of 24 and 60.

GCF by listing out the factors method.

Factors of 24  : 1,2,3,4,6,8,12,24

Factors of 60 : 1,2,3,4,5,6,10,12,15,20,30,60

So,

The greatest common factor of 24 and 60 is 12.

The number of bags William will used for equal distribution = 12

Now,

We have to distribute the veggies and fruits in equal number of cans to these 12bags.

Number of fruits cans used in each bag = \frac{24}{12} = 2

Number of vegetables can used in each bag = \frac{60}{12} =5

We can say that:

William will make 12 bags of food and each of the bag will contains 2 cans of fruit and 5 cans of vegetables.

4 0
3 years ago
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maks197457 [2]

Angle 1 - 60 degrees

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6 0
3 years ago
Janice is considering two restaurants for a party. The first restaurant charges $15 per person plus a flat rate of $175 to reser
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Answer:

The answer is 15x + 175 = 9x + 329.

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
Use the substitution method to solve the system of equations. Please help me get this question right
vaieri [72.5K]

Answer:  B (2,1)

You know what y is (x-1) so you substitute that for y in the other equation.

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3 years ago
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