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uysha [10]
4 years ago
6

Consider the equation 2x +4y =12. Solve for y

Mathematics
2 answers:
maw [93]4 years ago
6 0
2x + 4y = 12
1/2x * 2x/1 + 4y = 12 * 2x
4y = 12 * 2x
4y/4 =12/4 * 2x
y = 3 * 2x
y = 6x
serious [3.7K]4 years ago
4 0

Hello!

Solve for y.

2x +4y =12

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓↓

First you had to add by -2x from both sides of the equation.

2x+4y+-2x=12+-2x

4y=-2x+12

Then divide by 4 from both sides of the equation.

\frac{4y}{4}=\frac{-2x+12}{4}

Simplify it should be the correct answer.

y=\frac{-1}{2}x+3

Answer⇒⇒⇒⇒⇒⇒y=-1/2x+3

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

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A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 8
uysha [10]

Answer:

12

Step-by-step explanation:

Given :

                                    Male         Female        Total

Registered                                                          60

Non registered                                                   40

Total                          20                  80    

Solution :

N= 100

Formula of expected frequency = E_{ij}=\frac{T_i \times T_j}{N}

E_{ij}= expected frequency for the ith row/jth columm.

T_i = total in the ith row

T_j= total in the jth column

N = table grand total.

So, using formula  E_{11}=\frac{T_1 \times T_1}{100}

E_{11}=\frac{60 \times 20}{100}

E_{11}=12

E_{12}=\frac{T_1 \times T_2}{100}

E_{12}=\frac{60 \times 80}{100}

E_{12}=48

E_{21}=\frac{T_2 \times T_1}{100}

E_{21}=\frac{40 \times 20}{100}

E_{21}=8

E_{22}=\frac{T_2 \times T_2}{100}

E_{22]=\frac{80 \times 40}{100}

E_{22}=32

Expected frequency table

                                    Male         Female        Total

Registered                  12                  48            60

Non registered           8                   32             40

Total                           20                  80    

So, the expected frequency for males who are registered voters are  E_{11}=12

5 0
3 years ago
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