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anyanavicka [17]
4 years ago
6

7 less than twice a number k

Mathematics
1 answer:
STatiana [176]4 years ago
4 0
2k - 7

Seven less than twice a number of k.
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The median boiling temperature of the tap water is 100°C.The median boiling temperature of the salt water is 102°C. Which statem
KiRa [710]

Answer:

The mean of the tap water boiling point is about 2 degrees Celsius less than the mean of the salt water temperature.

Step-by-step explanation:

Boiling point is the temperature at which a liquid boils or changes from liquid form to gaseous form. Water has a boiling point of 100 degrees Celsius.

Boiling point of water depends on atmospheric pressure which changes according to the height above sea level of a place.

Boiling point can also change depending on the purity of water.Water that has impurities such as salt will have a slightly higher boiling temperature.

The mean of the tap water boiling point is about 2 degrees Celsius less than the mean of the salt water temperature.

4 0
3 years ago
(X-3) (2x-3)= (x-3) (x+1) solve for x
yanalaym [24]

(x  - 3)(2x - 3) = (x - 3)(x + 1)

Do the multiplication both sides,

2 {x}^{2}  - 9x + 9 =  {x}^{2}  - 2x - 3

Arrange the terms to LHS according to their variables,

2 {x}^{2}  -  {x}^{2}  - 9x  +  2x + 9 - 3 = 0 \\  {x}^{2}  - 7x  + 6 = 0


Factorise this polynomial

{x}^{2}  - 6x - 6x + 6 = 0 \\ x(x - 6) - (x - 6) = 0 \\ (x - 1)(x - 6) = 0


So what we notice here is when you're multiplying two numbers you're getting 0 as answer.

So one of them must be 0.

If (x-1) is 0
then x = 1

similarly,

x-6=0

then, x= 6.


So the possible values of x are 1 and 6.
7 0
3 years ago
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PLEASE HELP ILL GIVE BRAINILEST ANSWER!
skelet666 [1.2K]

Answer:

Angle A=73

Step-by-step explanation:

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3 years ago
Similar triangles ... help?
jolli1 [7]

Answer:

The second answer

XYZ-RQS

Step-by-step explanation:

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3 years ago
An elephant needs to drink at least 40 gallons of water each day. A drinking tank contains 4 gallons of water. The elephant has
kirill115 [55]

Answer:

x≥4

Step-by-step explanation

24+4x≥40. Subtract 24 from both sides to get 4x≥16. Divide both sides by 4 to get x≥4.

6 0
3 years ago
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