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Anettt [7]
4 years ago
12

What is the answer to the system?​

Mathematics
1 answer:
omeli [17]4 years ago
6 0

\begin{cases}x + y  = 40 \\  \frac{x}{20} +  \frac{y}{4}   = 6\end{cases} \\ \Leftrightarrow \begin{cases} x + y = 40\\x + 5y = 120 \end{cases} \\ \Leftrightarrow \begin{cases} x + y = 40\\ 4y = 80\end{cases} \\ \Leftrightarrow \begin{cases}x  = 20 \\ y = 20\end{cases}

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Help!!,!, please
Crank

Answer:

y = 2x + 4

y = 2x + 46x – 3y = -12

y = 2x + 46x – 3y = -12And

y = 2x + 46x – 3y = -12Andy = 2x

y = 2x + 46x – 3y = -12Andy = 2x-8x – 2y = 24

Step-by-step explanation:

hope it helps you

6 0
3 years ago
Help me please!!!!!!!!!!!!
Alja [10]

Answer:

3.5

Step-by-step explanation:

just trust me on this one i dont really know how to show my work

5 0
3 years ago
Determine the domain of the function
skelet666 [1.2K]

Answer:

Option B is correct.

The domain of the function h(x) is: \{x | x\neq \pm 6 , x\neq 0\}

Step-by-step explanation:

Domain states that the complete set of all the possible values of the independent variable where function is defined.

Given the function:

h(x) = \frac{9x}{x(x^2-36)}

To find the excluded value in the domain of the function.

equate the denominator to 0 and solve for x.

i.e

x(x^2-36) = 0

⇒x = 0 and x^2-36 = 0

⇒x = 0 and x^2 = 36

or

x = 0 and x = \pm 6

So, the domain of the function h(x) is the set of all real number except x = 0 and x = \pm 6

Therefore, the domain of the function h(x) is:

\{x | x\neq \pm 6 , x\neq 0\}

8 0
4 years ago
Read 2 more answers
-4(2x-3) + 4x = 9x -4x +8 -4 answer this
shtirl [24]

Answer:

x = 8/9

Step-by-step explanation:

-4(2x-3) + 4x = 9x -4x +8 -4  

2x*(-4) -3*(-4) + 4x = 9x - 4x  + 8 - 4

-8x + 12 + 4x = 9x - 4x + 8 - 4         {Combine like terms}

-4x + 12 = 5x + 4

12  = 5x + 4x + 4

12 = 9x + 4

12- 4 = 9x

9x = 8

x = 8/9

5 0
3 years ago
Find the measure of each angel if m angle 8 = 115º
zalisa [80]
Lines p and q are parallel.
Corresponding angles are congruent.
Each two adjacent angles are supplementary.
Vertical angles are congruent.

Angles 7 and 8 are adjacent, supplementary angles.
m<7 + m<8 = 180
m<7 + 115 = 180
m<7 = 65

Angles 6 and 8 are corresponding angles and congruent.
m<6 = m<8
m<6 = 115

Angles 1 and 6 are vertical angles and congruent.
m<1 = m<6
m<1 = 115
7 0
3 years ago
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