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Korvikt [17]
3 years ago
15

What’s the common multiples for 12 and 30

Mathematics
2 answers:
jasenka [17]3 years ago
6 0

Hi!

Factors of 12: 1, 2, 3, 4, 6, 12

Factors of 30: 1, 2, 3, 5, 6, 10, 30

Explanation: <u><em>This question is super super easy. This question should be the least common multiples. First find the prime factorization of 12. It gave us 2*2*3=12. Then the prime factorization of 30. It gave us 2*3*5=30. You can also multiply each factors the greater number of times and it occurs to in steps 1 or step 2  and it gave us LCM=2*2*3*5=60. The least common multiple factors is 60 is the right answer. Hope this helps! And thank you for posting your question at here on Brainly. And have a great day. -Charlie</em></u>

Katarina [22]3 years ago
3 0
1, 2, 3, and 6 with the greatest common multiple of 6!! I hope this helps. :)
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A cafe offers senior citizens a 15% discount off its regular price of 8.95 for the dinner buffet. How much of a discounts doesn’
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Multiply the cost of the meal by 0.15 ( 15% as a decimal).

8.95 x 0.15 = 1.34

The amount of the discount would be $1.34

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If you need to find out how much a senior citizen pays, you would subtract the amount of the discount from the original price:

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3 years ago
Find the vertex of the parabola. Is the vertex a maximum or minimum? What is the equation for the axis of symmetry?
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Answer:

(2,45) ; x = 2

Step-by-step explanation:

The method for solving for the vertex of a parabola from standard form involves converting to vertex form by forming a squared term. First, we need to actually put this equation into standard form, which dictates that the x^2 must never have a number in front of it (including -1). This means factoring out a negative 5 from the whole left side:

-5 (x^2 - 4x - 5) = y.

The next step is to pull the -5 out of the parentheses,

-5 (x^2 - 4x) + 25 = y,

which means multiplying it by the term on the outside to result in a positive 25. From here, we form the squardo term from what is inside the parentheses. We do this by changing the form of the equation, similar to how one changes the form of a fraction (multiplying by a number over the same number so that you are effectively multiplying by one). Inside of the parentheses, we a going to add a number and on the outside of the parentheses, we are going to subtract that number multiplied by what is in front of the parentheses (effectively adding zero to the equation):

-5 (x^2 - 4x + __) +25 - (-5*__) = y.

Now, the number that goes in the blank is the coefficient of the x divided by two and then squared:

__= (-4/2)^2,

__= 4.

From there, we just plug in the __ , simplify, and factor:

-5 (x^2 - 4x + (4)) + 25 - (-5*(4)) = y,

-5 (x^2 - 4x + 4) + 25 - (-20) = y,

-5 (x^2 - 4x + 4) + 45 = y,

-5 (x - 2) (x - 2) + 45 = y,

-5 (x - 2)^2 + 45 = y.

Now the equation is in vertex form, and from it, we can determe the vertex. The general equation for vertex form is

m (x - x_{1}) + y_{1} = y,

where (x_{1},y_{1}) is the vertex. <em>*Notice that there is a negative sign built in to the equation, so when you pull out </em>x_{1}<em>, make sure that you leave behind a negative sign.</em> In our case, we pull out a positive two, leaving behind the negative sign. <em>*If it were a ( x + 2 ), we would change it into ( x - (-2)) and pull out the -2, leaving behind a negative sign.*</em>

This gives us a vertex of (2,45).

Now, the second part of the question asks for the equation of the axis of symmetry. The general equation for the axis of symmetry is

x = x_{1},

since the axis of symmetry is just a vertical line that goes through the vertex. Plugging in x_{1} then gives us

x = 2,

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