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enyata [817]
3 years ago
13

Which property of multiplication is shown below?

Mathematics
2 answers:
Sergio039 [100]3 years ago
5 0
It's commutative property because of the order
Kruka [31]3 years ago
5 0

Answer:  A. commutative property

Step-by-step explanation:

Given: If x = 3 + 4i and y = 5 + 6i,

Then x × y = y × x

  • The commutative property of multiplication says that two expressions can be multiplied in either order. The answer remains unchanged with by changing the order i.e. ab=ba, where a and b be any two real numbers  expressions .

Therefore the property of multiplication shown above is commutative property of multiplication.

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The leaning tower of Pisa currently "leans" at a 4 degree angle and has a vertical height of 55.86 meters. How tall was the lean
Marizza181 [45]

Answer:

56 meters.

Step-by-step explanation:

Please find the attachment.

Let the leaning tower's be h meters tall, when it was originally built.

We can see from our attachment that the side with length 55.86 meters is hypotenuse and h is adjacent side for 4 degree angle.

Since we know that cosine relates the adjacent and hypotenuse of a right triangle.

\text{Cos}=\frac{\text{Adjacent}}{\text{Hypotenuse}}

Upon substituting our given values we will get,

\text{Cos (4)}=\frac{55.86}{h}

h=\frac{55.86}{\text{Cos (4)}}

h=\frac{55.86}{0.99756405026}

h=55.996\approx 56                      

Therefore, the leaning tower was approximately 56 meters, when it was originally built.

6 0
3 years ago
Can anyone help me I was self isolating when my class was taught this and I can't get in contact with my teacher
Aleonysh [2.5K]

Answer:

Step-by-step explanation:

3x +2y = 13   -----------------(i)

x + 2y = 7    ----------------(ii)

Multiply the equation (ii) by (-1) and then add.

(i)              3x + 2y = 13

(ii)*(-1)      <u>-x    - 2y = -7 </u>        {Now, add and y will be eliminated}

                 2x       = 6

                        x = 6/2

x = 3

Plug in x = 3 in equation (i)

3*3 + 2y = 13

  9 + 2y = 13

         2y= 13 - 9

         2y = 4

           y = 4/2

y = 2

5 0
3 years ago
Read 2 more answers
Sheila buys two concert tickets from her friend she pays $90 for the two tickets she looks at the tickets and sees that each tic
Maru [420]

Cost of two tickets that Sheila paid to her friend = $ 90

Actual price of 1 ticket = $ 52.50

So, actual price of 2 tickets = 52.50\times2=105

Hence, markdown or discount Sheila's friend gave her is =

105-90=15

The answer is $15.


8 0
3 years ago
Read 2 more answers
Each time you add the interior angles of a triangle, the sum is always 180 degrees. Therefore, you conclude that the sum of the
levacccp [35]

Answer:

This explains triangle sum theorem

Step-by-step explanation:

Which States that the sum of interior Anglea of a triaiare always 180°

3 0
4 years ago
If a family has 6 children, in how many ways could the parents have 3 boys and 3 girls?
Jlenok [28]

The parents could have 3 boys and 3 girls in 400 ways

<h3>How to determine the number of ways?</h3>

The given parameters are

Children, n = 6

Boys, r = 3

Girls, r =3

The number of combination is:

Ways = ^nC_{r1} *^nC_{r2}

So, we have:

Ways = ^6C_3 *^6C_3

Apply the combination formula

Ways = \frac{6!}{3!3!} *\frac{6!}{3!3!}

This gives

Ways = 400

Hence, the parents could have 3 boys and 3 girls in 400 ways

Read more about combination at:

brainly.com/question/11732255

#SPJ1

4 0
2 years ago
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