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2 years ago

Solve the system of equations.

Mathematics

1 answer:

KatRina [158]2 years ago

5 0

Solve by Substitution
Answer:
x = -5
y = -2

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Drag each number to the correct location on the table. Each number can be used more than once, but not all numbers will be used.

muminat

Answer:

1. $12x^2-13.4x-11$

- Degree: 2

- Number of terms: 3

2. $7x^3+168$

- Degree: 3

- Number of terms: 2

3. $9x^4-9$

- Degree: 4

- Number of terms: 2

Step-by-step explanation:

For this exercise you need to remember the multiplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-$

1. Given:

$(4x + 2.2)(3x - 5)$

Apply the Distributive property:

$=12x^2+6.6x-20x-11$

Add the like terms:

$=12x^2-13.4x-11$

You can idenfity that:

- Degree: 2

- Number of terms: 3

2. Given:

$(-304 +503 - 12) + (7x^3 - 25 + 6)$

Add the like terms:

$=187 + 7x^3 - 25 + 6=7x^3+168$

You can idenfity that:

- Degree: 3

- Number of terms: 2

3. Given:

$(3x^2 - 3)(3x^2 + 3)$

Apply Distributive property:

$=9x^4-9x^2+9x^2-9$

Add the like terms:

$=9x^4-9$

You can idenfity that:

- Degree: 4

- Number of terms: 2

8 0

3 years ago

You have a recipe that indicates to use 3 parts milk for every 2 parts sugar You use 12 cups of milk How much sugar do you need

Stells [14]

Proportion
3 parts milk. 12cups
2 parts sugar X

8 cups sugar

8 0

3 years ago

What is value of x?<br><br><br><br> Enter your answer in the box.

Kryger [21]

Answer:

A number

Step-by-step explanation:

4 0

3 years ago

HEEEEEEEEEEEEEEEEEEEEEEELP

Crank

Answer:

A is -2

B is 2

C is 4

Step-by-step explanation:

So just replace each letter with these numbers and do the math, hope this helps

4 1

3 years ago

Help please any One who can solve this equation? ☺

malfutka [58]

If y varies directly with x, that means they change at proportion rates. We can define their relationship using a constant k.

y = kx

Plug in what we know to find k.

-3 = 5k

k = -3/5

So:

y = -1 * (-3/5)

y = 3/5

6 0

3 years ago