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Elden [556K]
2 years ago
15

Dry ice is carbon dioxide in a solid state. Its freezing point is –78.5°C. You use dry ice to freeze liquid mercury that is at r

oom temperature, or 22°C. How many degrees Celsius does the temperature of the mercury need to drop?
Mathematics
2 answers:
Triss [41]2 years ago
5 0

Answer:

3.568

Step-by-step explanation:

finlep [7]2 years ago
4 0

Answer:

you subtract to get the amount of what your lookin for my plueshure

Step-by-step explanation:

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Find the possible values of c such that the line with equation y = 2x + c twice intersects the parabola with equation y = x^2 +
Maru [420]

Answer:

C>-1/4

Step-by-step explanation:

Two have intersection it must be:

2x+c= x^2+3x, i.e,

x^2+x-c=0

Solution of its equation is:

x_{1,2}=\frac{-1+-\sqrt{1^2+4c}}{4c}

If we we want two solution we must have that:

1+4c>0

So c>-1/4.

4 0
3 years ago
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Let's say that you go out for dinner. The meal and the service are excellent. You want to leave a really good tip for the waiter
Oduvanchick [21]
First, to estimate we can round 53.82 up to 55.00. Then you can look at it like this: when you divide 100 by 20 you get 5, so 20% is one fifth of 100. Therefore, we want to find one fifth of $55. To do this, you multiply 55*1/5. When you multiply the numerators by each other and the denominators by each other, you get 55/5. When you divide the numerator and denominator by 5, you get 11/1 or $11.

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7 0
3 years ago
I really need help please <33​
Anvisha [2.4K]

Tonya's homework assignment has four problems a, b, c, d. Her teacher instructed her to simplify each expression and then find out its value. The value of a is 3/28, the value of b is 1/2, the value of c is 15/56 and the value of d is 1/15.

Each problem has two fractions. They are given below and should be simplified.

a) 2/7 × 3/8 = 1/7 × 3/4 = 3/28

b) 2/3 × 3/4 = 1/1 × 1/2 = 1/2

c) 3/7 × 5/8 = 15/56

d) 3/10 × 2/9 = 1/5 × 1/3 = 1/15

To know more about fractions:

brainly.com/question/24503096

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1 year ago
How does depositon change the earths surface
jok3333 [9.3K]

Step-by-step explanation:

"Deposition occurs when weathered rocks, soil, and sediments are carried by erosion to a new location and left there. Deposition happens when the forces carrying the sediments - wind, water, glaciers - are no longer strong enough to move the sediments. Rivers and streams fill with melting snow in the springtime."

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3 years ago
Please help me with this?
emmasim [6.3K]

Answer:

2

Step-by-step explanation:

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3 years ago
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