All categories

4 years ago

What is the solution to x=1/2y-3 and y=2x+6

Mathematics

1 answer:

Tom [10]4 years ago

3 0

Answer:

infinite solutions

Step-by-step explanation:

Multiply the first equation by 2 so we don't have fractions.

x = 1/2y - 3 becomes 2x = y - 6

Now substitute the second equation into the y-value of the new equation

2x = (2x + 6) - 6

2x = 2x

x can equal anything. this means there are infinite solutions

You might be interested in

As a manager for an advertising company, you must plan a campaign designed to increase Twitter usage. A recent survey suggests t

kolbaska11 [484]

Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI) $\hat{p} \pm z^{*} \sqrt{ \frac{\hat{p}(1-\hat{p})}{n} } \\ where \\ n=sample\, size \\ z^{*}=1.645 \, at \, 90\% \, CL$

We want the confidence interval to be 5% or 0.05. Therefore
$0.85 - 1.645 \sqrt{ \frac{0.85(1-0.85)}{n} }=0.05 \\ 0.85 - \frac{0.5874}{ \sqrt{n} } =0.05 \\ \frac{0.5874}{ \sqrt{n} }=0.8 \\ \sqrt{n} = .7342 \\ n=0.54$

Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.

Answer: 30

3 0

3 years ago

1+4=5 2+5=12 3+6=21 puzzle

wel

Answer:

The puzzle is first add the current two numbers and then add their sum to result obtained in previous step.

Step-by-step explanation:

1 + 4 = 5

2 + 5 = 12

12 is obtained by adding 2 + 5 = 7 and adding the result obtained in previous result which is 5 to 7

⇒ 7 + 5 = 12

Now, 3 + 6 = 21

21 is obtained by first adding 3 + 6 = 9 and the previous result obtained is 12

So adding 12 to 9 ⇒ 12 + 9 = 21

Hence, The puzzle is first add the current two numbers and then add their sum to result obtained in previous step.

5 0

3 years ago

Read 2 more answers

What is the name of this polygon? rectangle square trapezoid rhombus A quadrilateral. Each side has one tick mark.

julsineya [31]

I think it’s a rhombus.

6 0

3 years ago

Read 2 more answers

Cgi- jici- oir<br><br>only show type person come

Feliz [49]

Answer:

what

Step-by-step explanation:

8 0

3 years ago

Simplify to create an equivalent expression 6(7-3y)+6(y+1)

NeTakaya

Answer:

-12y+48

Step-by-step explanation:

6(7-3y)+6(y+1)

42-18y+6y+6

-12y+42+6

-12y+48

6 0

3 years ago

Read 2 more answers