MATHEMATICS HIGH SCHOOL

I NEED HELP ASAP 35 POINTSIdentify the property that justifies each step asked about in the answer area below.
(x + 1)(2+9x)
(x + 1) (9x + 2)
(9x + 2)(x + 1)

Line 1 to Line 2:
Line 1:
Line 2 to Line 3:
Line 2:
Answer Attempt 1 out of 2
Line 3:
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Answers

Answer 1

Answer:

Answer:

Line 1:

Line 1 to Line 2: Commutative property of addition.

Line 2:

Line 2 to Line 3: Commutative property of multiplication.

Line 3:

Could not answer: Line 1, Line 2, and Line 3. Are there options for the question?
If so, label them and I will edit the answer ASAP

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A kite is a quadrilateral with two pairs of adjacent, congruent sides. The vertex angles are those angles in between the pairs of congruent sides. Prove the diagonal connecting these vertex angles is perpendicular to the diagonal connecting the non-vertex angles. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted

Answers

from the figure we can express as Pythagoras theorem for rectangle triangles:

a^2 = r^2 + z^2

b^2 = r^2 + z^2

sen m = z/a
cos m = r/a

hence by the law of sines and cosines:

sen^2 m + cos^2 m = 1
(z/a)^2 + (r/a)^2 = 1

z^2/a^2 + r^2/a^2 = 1

substitue first equation value for a^2
z^2/(r^2 + z^2) + r^2/(r^2 + z^2) = 1

which proves that in fact is a triangle rectangle due to Pythagoras and sine-cosine laws, the same procedure can be follow for the other rectangle triangule in teh figure.

Fei yen dog eats 8 ounces of dog food each day. Fei yen bought a 28 pound bag of dog food. How many 8ounce servings are in a pound bag of dog food

Answers

First you need to know how many ounces are in a pound=16 oz
16x28= 448 oz of food
448/8= 56 servings of dog food

24 with a remainder of 4

Rewrite the decimal fraction as a decimal number.

8 25/1,000

Answers

25/1000 as a decimal is 0.025

Your answer would be 8.025

Answer:

8.025

Step-by-step explanation:

8 is in the ones place and it says 25 one thousands so, 25 one thousandths.

Hope it helped!

Solve the equation:
3x – 8 = 14 - 8x

Answers

Answer:

x=2

Step-by-step explanation: by using a caluclator

How to convert improper fraction to a mixed or whole number (reduce to lowest terms): 24/9 how to convert improper fraction to a mixed number 24/9
how to convert improper fraction to a mixed (reduced to lowest terms)
change to an improper fraction: 4 2/3=?