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GarryVolchara [31]
3 years ago
15

The freezing point of water is 0 C. Scientists use positive numbers to show temperatures above the freezing point water and nega

tive numbers to show temperatures below the freezing point of water.The freezing point of maple syrup is 18 C. What does -18'C represent in this situation
Mathematics
1 answer:
inn [45]3 years ago
8 0

Answer:

The -18°C temperature as the freezing point of maple syrup means that the temperature at which maple syrup changes from liquid to solid (that is, freezes) is 18° below the freezing point of water.

Step-by-step explanation:

It is explained that the freezing point of water is used as the standard or reference point to calibrate the Celsius scale.

The scientists use 0°C to represent the freezing point of water and subsequently use positive numbers to indicate temperatures above the freezing point of water and negative numbers to indicate temperatures lower than the freezing point of water.

So, a temperature/freezing point of -18°C simply means that the temperature/freezing point is 18° lower than the freezing point of water.

Hope this Helps!!!

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If you add or subtract two rational numbers, is the result sometimes, always, or never rational?
lawyer [7]

Answer:

Always

Step-by-step explanation:

8 - 9 = -1

1/3 - 1/6 = 1/6   are 2 examples

8 0
3 years ago
Which is an equation of the line that passes through (-1,-5) and (-3,-7)
Sladkaya [172]

Slope intercept formula is:

y = mx + b

m is the slope

b is the y-intercept

Let's find m, the slope:

The formula for slope when using two points on a line is:

\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

In this case...

y_{2} =-7\\y_{1} =-5\\x_{2} =-3\\x_{1} =-1

^^^Plug these numbers into the formula for slope...

\frac{-7-(-5)}{-3-(-1)}

\frac{-2}{-2}

1

^^^This is your slope

So far this is our equation:

y = 1x + b OR y = x + b

Now let's find b, the y-intercept:

To do that you must plug in the point the line goes through in the x and y of the equation.

For this question I have chosen to plug in the point (-1, -5)

-5 = -1 + b

-5 + 1 = -1 + 1 + b

-4 = 0 + b

-4 = b

Your equation is:

y = x - 4

Hope this helped!

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5 0
4 years ago
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The length of a rectangle is 3 times the width. If
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Answer:

Length = 27 metresWidth = 9 meters

Step-by-step explanation:

8 0
3 years ago
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Find the price per unit for each item, then choose the best buy. a. Cereal, 10 oz. box for $5.90 would = b. Cereal, 24 oz. box f
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10z box = $5.90
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24 oz box is cheaper, it is a better buy
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g A researcher conducts a hypothesis test where he compares the scores of a random sample of students' SAT scores to the nationa
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Answer:

Let level of significance is \alpha=0.05

Since p-value is greater than alpha so  students' mean score does not significantly differ from the national average.

Correct option is:

His students' mean score does not significantly differ from the national average, because his p-value is greater than alpha.

Let level of significance is \alpha=0.10

Since p-value is less than alpha so  students' mean score does significantly differ from the national average.

Correct option is:

His students' mean score does significantly differ from the national average, because his p-value is less than alpha.

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