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kap26 [50]
3 years ago
11

Physical and chemical changes

Mathematics
2 answers:
OlgaM077 [116]3 years ago
5 0
Physical changes the appearance of matter. Chemical change is when two substances combine to form a new one
SCORPION-xisa [38]3 years ago
3 0

Answer:

Physical and chemical changes can occur in matter. The look of material changes as a result of a physical change. Physical changes are sometimes known as phase changes. When materials change phase, they transition from solid to liquid, liquid to gas, or some other combination. If you mix materials together and see fire, bubbles, or a change in color, you might be able to see a chemical shift.

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Determine the equation of the tangent line to the given path at the specified value of t. (sin(7t), cos(7t), 2t9/2); t=1
Reptile [31]

Answer:

P(t) = {sin7, cos7, 2} + (7cos7, -7sin7, 9)(t-1)

Step-by-step explanation:

The equation of the tangent line to the given path at the specified value of t is expressed as;

P(t) = f(t0) + f'(t0)(t - t0)

f(t0) = (sin(7t), cos(7t), 2t^9/2)

at t0 = 1;

f(t0) = {sin7(1), cos7(1), 2(1)^9/2}

f(t0) = {sin7, cos7, 2}

f'(t0) = (7cos7t, -7sin7t, 9/2{2t^9/2-1}

f'(t0) = (7cos7t, -7sin7t, 9t^7/2}

If t0 = 1

f'(1) = (7cos7(1), -7sin7(1), 9(1)^7/2)

f'(1) =(7cos7, -7sin7, 9)

Substituting the given function into the tangent equation will give:

P(t) = f(t0) + f'(t0)(t - t0)

P(t)= {sin7, cos7, 2} + (7cos7, -7sin7, 9)(t-1)

The final expression gives the equation of the tangent line to the path.

4 0
3 years ago
What is the area of the trapezoid?<br> Enter your answer in the box.<br><br> *box*
Vanyuwa [196]

Answer:

72 in

Step-by-step explanation:

Formula: A=a+b/2 h

A=a+b/2 h=8+16/2·6=72

4 0
2 years ago
Katherine Owes eight of her friends the same amount of money for total of $60
ArbitrLikvidat [17]

Answer:

7.50 per person

Step-by-step explanation:

60 divided by 8

7.5

7 0
4 years ago
A superhero recently asked his nemesis how many cats she has. She answered with a​ riddle: ​" Seven-eighths of my cats plus two​
melamori03 [73]
2 7/8 is the answer
4 0
3 years ago
Select the correct answer.
NeTakaya

The rational expression that results into x-4/2(x+4) is<em> x²-16/2x+8 * x+4/x²+8x+16</em>

<h3>Multiplying rational expressions</h3>

Rational expressions are written in the form a/b where a and b are integers.

According to the question, we need to determine the expression that is equal to x-4/2(x+4)

From the fourth option;

x²-16/2x+8 * x+4/x²+8x+16

Factorize the quadratic part to have;

x²-16/2x+8 * x²+8x+16/x+4

(x+4)(x-4)/2(x+4) * x+4/(x+4)^2

Cancel out the common expression to have;

x-4 * 1/2(x+4)

x-4/2(x+4)

Hence the rational expression that results into x-4/2(x+4) is<em> x²-16/2x+8 * x+4/x²+8x+16</em>

Learn more rational expression here: brainly.com/question/25292194

#SPJ1

3 0
1 year ago
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