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kotykmax [81]
3 years ago
15

PLEASE HELP @) POINTS!!! Which of these is true of a chemical reaction?

Mathematics
2 answers:
lakkis [162]3 years ago
8 0
Energy is either released or absorbed
mrs_skeptik [129]3 years ago
4 0
C, the energy is either released or absorbed
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Your family goes to a Southern-style restaurant for dinner. There are 6 people in your family.
swat32

Answer:

We conclude that:

  • The number of people who ordered the chicken dinner = 1
  • The number of people who ordered the steak dinner = 5

Step-by-step explanation:

Given that

  • Some order the chicken dinner for $14
  • some order the steak dinner for $17.
  • Total bill = $99

  • Let 'n' be the number of people who ordered the chicken dinner.
  • Let '6-n' be the number of people who ordered the steak dinner.

Thus, the equation becomes

14n + 17(6-n) = 99

14n + 102 - 17n = 99

-3n = 99 - 102

-3n = -3

Divide both sides by -3

n = 1

and

6-n = 6-1 = 5

Therefore, we conclude that:

  • The number of people who ordered the chicken dinner = 1
  • The number of people who ordered the steak dinner = 5
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3 years ago
What is the product?
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Answer:

The first one, 10 15 20

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Step-by-step explanation:

7 0
3 years ago
Look at the table representing the growth of the circumference of a tree, and then complete the sentences.
Iteru [2.4K]

linear

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3 years ago
Simplify the following expression 5^2-4/5+2
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26 1/5 is the answer i got
8 0
3 years ago
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Amir stands on a balcony and throws a ball to his dog, who is at ground level.
Bumek [7]

Answer:

16 meters

Step-by-step explanation:

The height function is given by:

h(x)=-(x+1)(x-7)\\h(x)=-(x^2+x-7x-7)\\h(x)=-x^2+6x+7

The value of x, in seconds, for which the derivate of the height function is zero, is the time at which the maximum height occurs:

\frac{dh(x)}{dx}= h'(x)=-2x+6=0\\x=3

For x = 3 seconds, the height is:

h(3)=-(3^2)+6*3+7\\h(3)=16\ m

The maximum height that the ball will reach is 16 meters.

6 0
3 years ago
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