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Cloud [144]
2 years ago
15

An engineering student is studying the effects of cryogenic treatments on a particular material. The treatment involves cooling

the material with specific applications of liquid nitrogen.
The temperature of the material in degrees Celsius, y, can be modeled by the following graph, where x represents the time, in hours, since the treatment began.
Mathematics
1 answer:
kvv77 [185]2 years ago
8 0

The true statement about the graph from the attached image below is: The material's temperature reaches a minimum at 15 hours.

<h3>What is the parabolic graph of the quadratic equation?</h3>

The parabolic graph is a curved U-shaped graph that is established from a quadratic equation.

The parabola of the graph can be downward creating a maximum or upward (minimum).

From the given image, the correct interpretation shows that as a result of cryogenic treatment, the material's temperature reaches a minimum at 15 hours.

Learn more about parabolic graphs here:

brainly.com/question/33428

#SPJ1

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dennis mowed his next door neighbors lawn for a handful of dimes and nickels, 80 coins in all. upon completing the job he counte
Serggg [28]

Answer:

52 dimes and 28 nickels

Step-by-step explanation:

n = number of nickels

d = number of dimes

n+d = 80   the number of coins he got

Multiply the number of nickels times .05 plus the number of dimes times .10 to equal the amount of money he got

.05n + .10d = 6.60

Divide this equation by .05

.05n/.05  + .10/.05 = 6.60/.05

n + 2d = 132

n+d = 80

Multiply by -1

-n-d=-80

Add this to n+2d = 132

n+2d=132

-n-d=-80

-------------------

d = 52

Now we need to solve for n

n+d = 80

n+52 = 80

Subtract 52 from each side

n+52-52= 80-52

n = 28


7 0
2 years ago
Write the expression 3m - 4n - 8 as a sum
vlada-n [284]
3m - 4n - 8 = 3m + (-4n) + (-8)

The trms of the expression: 3m; -4n; -8
8 0
3 years ago
Harmonic mean between x and y is
Komok [63]

Harmonic mean between two positive numbers x and y, The simplified formula is \boxed { \mathfrak{h = \frac{2 \times x \times y}{(x + y)}  }} I.e. you need to double the product of x and y then divide it by the sum of x and y...~

4 0
2 years ago
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What is the first term of the expression?<br><br><br> −6xyz + 9xy + 12x + 18y <br><br> TIA!
tatyana61 [14]

For this case we have that by definition:

  • <em>The terms of a polynomial expression are those that are composed of coefficients and variables separated by signs of addition and subtraction. </em>

We then have the following expression:

-6xyz + 9xy + 12x + 18y

According to the definition, we can conclude that the first term is given by:

-6xyz

Answer:

The first term of the expression is:

-6xyz

4 0
3 years ago
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The legs of a right triangle are 10 centimeters and 24 centimeters long what is the length of the hypotenuse ?
spayn [35]
Let the hypotenuse be x then,
Using the pythagoras theorm,
10^2 + 24^2 = x^2 (alt^2 + base^2 = hypo^2)
100 + 576 = x^2
676 = x^2
Therefore x= square root of 676 = 26
Hope this helped! :D
6 0
2 years ago
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