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3 years ago

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

7 0

3 years ago

What is the product?

cupoosta [38]

Answer:

The first one, 10 15 20

45 -5 -35

55 25 -15

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

first

1.57

1.57x

6 0

3 years ago

Simplify the following expression 5^2-4/5+2

Sever21 [200]

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

Read 2 more answers