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boyakko [2]
3 years ago
15

Choose the property that justifies the outcomes.

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0
We must look at each equation and pick out which property matches with the choices

For the equation:
5(8+3)=5*8+5*3
The property is
Distributive Property

For the equation:
4x+(5x+3)=9x+3
The property is
Commutative property of Addition

For the equation:
a+b=b+a
The property is
Associative Property of Addition
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-12 + 45<br> 25 + -77<br> Theres more in pic
miv72 [106K]

Answer

|-12|+|45|=|12|+|45|= 12+45=57

Step-by-step explanation:

When you take the absolute value of a negative number it is the same thing as taking as a positive number. The absolute value is just that number. Once you teach the absolute value of each number perform the operation given In the problem.

3 0
3 years ago
Sahra is three times as old as her daughter. If the sum of their age is 32. what is the age of the daughter?​
Andrews [41]
So Sahra is 3 times as old as her daugter. That means that the sum of their age is the daughters age times 4.
We can prove that by saying the daughters age is x. Sahra's age must be 3x. Their sum must be x+3x = 4x.
So to get the daughters age we divide the sum by 4, which is 8.
8 0
3 years ago
Read 2 more answers
If an item costs $45 and we must pay 6% sales tax, how much will we pay for the item?
Gennadij [26K]

$47.70

$45 with 6% sales tax

6%=.06

To find total amount multiply by 1.06 or multiply by .06 and that is tax amount and then add it to the $45

$45*.06=2.70 amount of tax

$45*1.06=47.70 total amount paid

Any questions feel free to ask. Have a great day!

4 0
3 years ago
Read 2 more answers
Your car cost $42,500 when you purchased it in 2015. The value of the car decreases by 15% annually. How much is your car going
Vika [28.1K]
Answer:
$16,028.85

Working out:
(On calculator) 42,500 x 0.85^6
3 0
3 years ago
Marilyn purchased a book that had a regular price of $19. She used a coupon that reduced the regular price by 15%. Sales tax for
Alika [10]

Answer:

2.80

Step-by-step explanation:

The discount is the regular price times the discount

discount = 19 *15%

discount = 2.85

The new price is the regular price minus the discount

new price = 19-2.85

                 =16.15

Now she has to pay the sales tax

tax = new price * tax rate

tax= 16.15 * 6.5%

     = 16.15 *.065

       =1.05

We add the tax to the new price to get the final price

final price = new price+tax

                = 16.15 +1.05

                =17.20

She pays with a 20 dollar bill

Change = payment - final price

              =20.00 - 17.20

              = 2.80

4 0
2 years ago
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