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3 years ago

Which equation demonstrates the additive identity property?

Mathematics

1 answer:

Alik [6]3 years ago

7 0

Answer:

The second one

Step-by-step explanation:

Additive identity is adding 0 to a number

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A wall in a classroom has a length of 16 ft and a diagonal of 20 ft. A student is painting a rectangular mural on the wall. The

katen-ka-za [31]

Answer:

B. 4 ft

Step-by-step explanation:

First, find the width of the wall.

The length, width, and diagonal form a right triangle, where the diagonal is the hypotenuse and the length and width are the 2 legs.

Use the pythagorean theorem and solve for a, the width of the wall.

a² + b² = c²

a² + 16² = 20²

a² + 256 = 400

a² = 144

a = 12

So, the width of the wall is 12 feet.

Solve for the width of the mural. Again, the diagonal, length, and width form a right triangle.

Use the pythagorean theorem again and solve for a, the width of the mural:

a² + b² = c²

a² + 6² = 10²

a² + 36 = 100

a² = 64

a = 8

So, the width of the mural is 8 feet.

Now, find the difference between the widths of the wall and mural:

12 - 8

= 4

So, the difference between the two widths is B. 4 ft

3 0

3 years ago

Read 2 more answers

A jewelry box contains 13 gold earrings, 10 silver earrings and 12 titanium

gulaghasi [49]

Answer:

The probability is 406/625

Step-by-step explanation:

If they are of different materials, we have the following combinations of selection;

(gold and silver) or ( silver and titanium) or (gold and titanium )

The number of earrings present is 13 + 10 + 12 = 25

Probability of selecting a gold earring is 13/25

Probability of a silver is 10/25

Probability of a titanium is 12/25

Substituting these into the probabilities, we have;

(13/25 * 10/25) + (10/25 * 12/25) + (13/25 * 12/25)

= 130/625 + 120/625 + 156/625 = 406/625

8 0

3 years ago

A teacher has brought treats for her 10 students. She will give out 3 fruit snacks, 2 teddy grahams, and 5 granola bars. How man

almond37 [142]

Answer:

2,520

Step-by-step explanation:

To be completely honest with you, I wasn't quite sure how to do this one, so I looked around for different equations, and this seemed to be the only one that would work for the problem. I hope this is right!

[Answer Updated]

6 0

4 years ago

What is 78.74/12.7 .Divide show the work

umka21 [38]

78.74 divided by 12.7 is equivalent to 7874 divided by 12.70, 78.74/12.7=7874÷1270=6.200 calculating 3 decimle places

6 0

3 years ago

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Which graph represents a linear function WILL MARK BRAINLESS

nekit [7.7K]

Answer:

The straight one, 4th row.

Step-by-step explanation:

linear graph forms a straight line.

y=mx+c

5 0

3 years ago