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2 years ago

Beau has decided to use the method of elimination to solve the system of equations as shown below.

Mathematics

1 answer:

nydimaria [60]2 years ago

4 0

Answer:

Step-by-step explanation:

Usually when we solve using elimination we have to multiply one equation by a certain number so that when we add them together one term will cancel with another. Here its already done for us. So, the first step that Beau should do in this case, is to add the two equations together so that -3y and +3y will cancel out and become 0. That leaves us with this- being an equation we can solve: 3x = 18. The technique of using elimination is useful because by manipulating one equation so that one variable term (meaning a term with x and y) will cancel with another we can have an equation with only one variable that we can solve. After solving that equation we can then plug that value back into one of the original equations and then solve for the other value, in this case the value for y.

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I need help I would really thank wheeler answers this for me

gavmur [86]

It helps immensely if you know your times tables.

a) 36 = 6*6 = 2*3*2*3 = 2^2*3^2

b) 45 = 5*9 = 5*3*3 = 3^2*5

c) 2 is not a common factor; 3^2 is a common factor; 5 is not a common factor. The greatest common factor is 3^2 = 9.

d) The least common multiple can be found a couple of ways.

.. 1) the product of the distinct factors to their highest powers
.. .. .. 2^2 * 3^2 * 5 = 180

.. 2) the product of the numbers divided by their greatest common factor.
.. .. .. 36 * 45 / 9 = 180

3 0

3 years ago

Daniel is baking a cake for Aaron's birthday. The recipe requires 2 1/2 cups of butter, 1/3 cups of brown sugar, and 1/2 cups of

Nastasia [14]

Answer

4 6/12 or 2 3/4 cups of total ingredients

Step-by-step explanation:

There are 2 1/2 cups of butter, 1/3 cups of brown sugar, and 1/2 cups of baking powder.

You'd want to make the denominators the same numbers so it would be easier to divide.

So I multiplied 2 1/2 times 3, 1/3 times 2, and 1/2 times 3.

Then all the numbers would have a denominator of 6. Don't multiply the whole numbers or the numerators. Just the denominator.

''THE NUMBERS'' would change to 2 1/6, 1/6, and 1/6.

If I were to add that it would be 2 3/6.

BUT, You need to multiply by 2 after because it says in the question "How many ingredients in cups will Daniel make the cake twice as large".

What is 2 3/6 times 2 = 4 6/12 total.

If it says to simplify the answer. It would be "'2 3/4 total'' or both answers are correct

6 0

2 years ago

Ping's Ice Cream Palace offers a special sundae that contains over 2kilograms of ice cream plus any number of toppings.

Dvinal [7]

I'm not exactly sure, so if I'm wrong please correct me.

The equation is 2kg + x = s

↓

(can be any variable letter)

7 0

2 years ago

Answer 10 only please, explain how you got your answer

ira [324]

Question:

The circumference of a clock is 22 inches. What is the radius of the clock?

Answer:

Radius = 3.5 inches

Solution:

Shape of the clock is circle.

Circumference of the circle = 2πr

Circumference of a clock = 22 inches

$\Rightarrow2\pi r=22$

$$\Rightarrow2\times\frac{22}{7}\times r=22$

$$\Rightarrow\frac{44}{7}\times r=22$

$$\Rightarrow r=22\times \frac{7}{44}$

$$\Rightarrow r=\frac{7}{2}$

⇒ r = 3.5 inches

Hence the radius of the clock is 3.5 inches.

8 0

3 years ago

What is the definition of “i”? What do we use it for? Demonstrate with an example of your own.

lyudmila [28]

Answer:

The letter "i" is used to signify that a number is an imaginary number.

Step-by-step explanation:

An imaginary number is one that gives a negative result when squared. This differs from when you square real numbers where you always get a positive result. For example:

i = √-1

Imaginary numbers can be especially useful when trying to find the square root of a real negative number such as -16. Normally we cannot find the square root of -16 but through the use of imaginary numbers we can:

√-16 = 4i

~Hope this helps!~

6 0

2 years ago