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GuDViN [60]
3 years ago
6

Solve for y= 2x+ 3y=12

Mathematics
2 answers:
natulia [17]3 years ago
6 0
 the correct answer is 
y=(-2x/3)+4

Aleks [24]3 years ago
6 0
Um since there is no x value attached, just put any x value and solve for y.

Example:

Y = 2 (when x = 3)
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I struggled with these as u can see, but pls answer all 3 questions and show how you set all the problems up (ill be giving brai
olga55 [171]

Answer:

1+1-2 its 2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determinin
riadik2000 [5.3K]

Answer:

Option b - not significantly greater than 75%.

Step-by-step explanation:

A random sample of 100 people was taken i.e. n=100

Eighty of the people in the sample favored Candidate i.e. x=80

We have used single sample proportion test,

p=\frac{x}{n}

p=\frac{80}{100}

p=0.8

Now we define hypothesis,

Null hypothesis H_0 : candidate A is significantly greater than 75%.

Alternative hypothesis H_1 : candidate A is not significantly greater than 75%.

Level of significance \alpha=0.05

Applying test statistic Z -proportion,

Z=\frac{\widehat{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n}}}

Where, \widehat{p}=80\%=0.80 and p=75%=0.75

Substitute the values,

Z=\frac{0.80-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}

Z=\frac{0.80-0.75}{\sqrt{\frac{0.1875}{100}}}

Z=\frac{0.05}{0.0433}

Z=1.1547

The p-value is

P(Z>1.1547)=1-P(Z

P(Z>1.1547)=1-0.8789

P(Z>1.1547)=0.1241

Now, the p-value is greater than the 0.05.

So we fail to reject the null hypothesis and conclude that the A is not significantly greater than 75%.

Therefore, Option b is correct.

7 0
3 years ago
If x+3y=7 and y=2 then x equals?
Verdich [7]
X + 3y = 7
y = 2

Substitute

x + 3(2) = 7
x + 6 = 7
x = 1
Hope this helps!<span />
7 0
3 years ago
Read 2 more answers
10 quater to 12 dimes , to 16 nickels
Fittoniya [83]
10 quarters to 12 dimes, to 16 nickels
10(0.25) to 12(0.1), to 16(0.05)
2.5 to 1.2, to 0.8
2.083 to 0.8
1.6664

4 0
3 years ago
PLEASE HELP ASAP. I NEED TO KNOW NOW
Vitek1552 [10]

Answer:

the answer is x1 = -4- square root of 23 x2= -4+ square root of 23

8 0
2 years ago
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