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Ksivusya [100]
3 years ago
12

Please help me with questions if u know them

Mathematics
1 answer:
Anettt [7]3 years ago
4 0

Answer:

Hi! For the first question, the property being demonstrated is the Commutative Property of Addition. For the second problem, the answer would be the Additive Identity Property of 0.

Step-by-step explanation:

In the problem 1.5 + 1.7 + 3.5 = 1.5 + 3.5 + 1.7, we can see the commutative property being used. The Commutative Property of Addition states that changing the order of the addends will not have an affect on the sum. As long as you still keep the same addends, the sum will <u>always </u>remain the same <u>regardless</u> of the order.

In the problem 16 + 0 = 16, we see the Additive property of 0 being demonstrated. This property basically states that adding a number to 0 will give you the same number. It is usually very easy to identify if you look for 0 being added to an addend.

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Two poles of lengths 10 ft and 15 ft are set up vertically with their bases on horizontal ground 12 ft apart. Find the distance
Maru [420]
When we connect the ends of the poles and the project the horizontal line from the end of the 10-ft pole to the other pole, we form a right triangle with the legs equal to 12 ft and difference of the lengths of the pole. Using the Pythagorean theorem,
                               h² = sqrt ((12 ft)² + (15 - 10)²)
                                        h = 13 ft
Thus, the distance between the tops of the poles is equal to 13 ft. 
4 0
3 years ago
Read 2 more answers
4 1/3 x 3/5 express your awnser in simplest form.
vodka [1.7K]

Answer:

2 3/5

Step-by-step explanation:

8 0
3 years ago
Oksana made 147 bracelets to sell at the
irakobra [83]
84 because 147-63=84
7 0
4 years ago
There are 12 baseball trading cards in 4 packages. each package has the same number of cards. Write a rule in words for the numb
Tamiku [17]

Answer:

  • <u>Rule in words:</u>

        The number of packages Justin needs to buy to get x cards is x divided by 3.

  • <u>Rule as an algebraic expresssion:</u>

        y=x/3

Explanation:

This is a direct variation problem.

Since  each package has the same number of cards, the number of cards is proportional to the number of packages.

12 baseball cards in 4 packages means that there are 12/4 = 3 cards per package, so:

  • The number of cards is 3 times the number of packages.

  • The number of packages is the number of cards divided by the number of 3.

So, the <em>rule in words</em> for the number of packages Justin needs to buy x cards is one third of x. This table may help you to visualize it:

Number of packages:   1     2     3      4    5

Number of cards:          3     6     9    12    15

To find the <em>algebraic expression</em> that describes the same rule, you can set the following proportion:

\frac{12}{4} =\frac{x}{y}

Where y is the number of packages and x is the number of cards.

And from that you solve for y:

\frac{12}{4} =\frac{x}{y}\\ \\ 12y=4x\\ \\ y=4x/12\\ \\ y=x/3

8 0
4 years ago
What is x plus y equals 20
Rufina [12.5K]

You would have to find the y intercepts.

X + Y = 20

Substitute 0 for y then your answer would be 20 for x.

Substitute 0 for x then your answer would be 20 for y.


X=20

Y=20

Hope it helped! : )

8 0
4 years ago
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