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katrin [286]
3 years ago
13

Avertical lino goes through tho point (3,4). What is the equation of that line?

Mathematics
1 answer:
lesya [120]3 years ago
3 0

Answer:

3x 4y

Step-by-step explanation:

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3. Heat always travels from_______<br> to_______ PLEASE HEELP MEMEMEMEMEENEM
Schach [20]

Answer: warmer to the cooler

Step-by-step explanation :Conduction is the movement of heat through a substance by the collision of molecules. ... The slower molecules gain more thermal energy and collide with other molecules in the cooler object.

8 0
3 years ago
What is normal, when it comes to people's body temperature? a random sample of 130 human body temperatures, provided by allen sh
nikitadnepr [17]
The two-sided alternative hypothesis is appropriate in this case, the reason being we are asked "does the data indicate that the average body temperature for healthy humans is different from 98.6◦........?".
The test statistic is:
Z= \frac{\bar{X}-\mu}{ \frac{s}{ \sqrt{n} } }} =-5.47
Using an inverse normal table, and halving \alpha for a two-tailed test, we look up p=0.5-\alpha/2=0.5-0.005=0.495 and find the critical value to be Z = 2.5758.
Comparing the test statistic Z = -5.47 with the rejection region Z < -2.5758 and Z > 2.5758. we find the test statistic lies in the rejection region. Therefore the evidence does not indicate that the average body temperature for healthy humans is different from 98.6◦.
 
7 0
3 years ago
Find the expressions that have a quotient of 7 R12. choose all that apply
maksim [4K]

Answer:

Try D. I am not exactly sure but let's hope it works.

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
200x20+400-21+99-87+432
Vitek1552 [10]

Answer: 4823

Step-by-step explanation: add..idk what else to tell u tbh

hope this helped :)

5 0
3 years ago
Two pumps are filling a pool. One of them is high power and can fill the pool alone in 2 hours less time than the other can do s
KatRina [158]

Answer:

9.1 hours

Step-by-step explanation:

Make a Chart.  

Column 1 is Time it takes to do the job alone

Column 2 is Rate of Work  ( 1 over the expression in Column 1)

Column 3 is Time it takes to do the job together

Column 4 is Part of the Job done  ( Columns 2 and 3 multiplied together )

 

Row 1 is the First pipes info.

Row 2 is the Second pipes info.

 

The equation comes from column 4.    Part of the Job from Pipe 1  +  Part of the Job from Pipe 2  =  1  (the whole job)

 

So Row 1 for Pipe 1, the small pipe, would look like this:    x    ,    1/x     ,    4     ,    4/x

Row 2 for Pipe 2, the larger pipe, would look like this:     x - 2  ,   1/x-2   ,   4     ,    4/(x-2)

 

So, the equation would be:     4/x   +   4/(x-2)    =   1

 

Solve this equation by first multiplying both side by  x(x-2) to clear the denominators.

 

So the equation becomes:  4(x-2) + 4x  = x(x-2)

Distribute and combine like terms, then get everything on one side of the equation.

 

So the equation becomes:   x^2  - 10x + 8  = 0

 

Use the quadratic equation to solve for x.  Solutions are  x = 9.1 and x = .9

.9 hours does not make sense so throw that solution out (with the dirty pipe water :) )

 

9.1 hours makes sense for how long it would take the smaller pipe working alone to fill the pool.

3 0
3 years ago
Read 2 more answers
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