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barxatty [35]
3 years ago
10

Can someone help me with these two questions??

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
4 0

Answer:

14. A. Commutative Property of Addition.

15. D. k=54

Step-by-step explanation:

6 + 9 = 9 + 6 is an example of the Commutative Property of Addition so that is your answer.

k + (-12) = 42. What you do is add the 12 to both sides to get your answer.

k=54 is your answer.

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25. Which is an example of an operation?<br> A) 12<br> B) 6ab<br> C) +<br> D) y
nasty-shy [4]
Letter c is an operation.
Addition
8 0
3 years ago
a rhombus as an area of 72 ft and the product of the diagonals is 144. What is the length of each diagonal?
SashulF [63]

A = (1/2)(x)(y)

Let x = diagonal 1

Let y = diagonal 2

The product of xy = 144.

This means that x = 12 and y = 12.

So, 12 • 12 = 144

Each diagonal is 12 feet.

Prove:

72 feet = (1/2)(12)(12) feet

72 feet = (1/2)(144) feet

72 feet = 72 feet

6 0
3 years ago
Santo paid $16.25 to buy 5 children tickets and 1 adult ticket. Hulda paid $24.00 to buy 4 children tickets and 3 adult tickets.
jenyasd209 [6]

Answer:

The price of an adult ticket it $5

Step-by-step explanation:

To solve this, we would find the system of equations. We would set up two equations that will represent the situation.

Let c = price per children ticket

Let a = price per adult ticket

Santo:

5c + 1a = 16.25

Hulda:

4c + 3a = 24

5c + 1a = 16.25 -> a = 16.25 - 5c

4c + 3a = 24

4c + 3(16.25 - 5c) = 24

4c + 48.75 - 15c = 24

-11c + 48.75 = 24

       -48.75   -48.75

-11c = -24.75

/-11       /-11

c = 2.25

5c + a = 16.25

5(2.25) + a = 16.25

11.25 + a = 16.25

-11.25        -11.25

a = 5

a = $5 , c = $2.25

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(Double-check if this doesn't sound correct)

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