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FinnZ [79.3K]
3 years ago
12

Which property is demonstrated in the equation 3 x 30 = 30 x 3 ? a. Property of Zero b. Commutative c. Symmetric d. Associative​

Mathematics
1 answer:
Contact [7]3 years ago
7 0

Answer:

B

Step-by-step explanation:

It’s communicative property because it you can multiply in any order.

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The selling price of a skateboard is 147 $. The store has 75% markup policy. What uis the selling price of the skateboard
lesantik [10]

Answer:

Selling Price = $147

Mark Up = 75%

------------------

The selling price of the skateboard is $84.

5 0
3 years ago
Cos (-Ø)= √3/3 sinØ <0 what is the value of sinØ?
Inga [223]

Answer:

sin∅= - √6/3

Step-by-step explanation:

Trigonometric function cos is even function which mean:

cos (-∅) = cos ∅

Trigonometric function sin is odd function which mean:

sin (-∅) = - sin∅  => sin∅ < 0

The basic trigonometric equation reads in this case with angle marked ∅:

sin²∅ + cos²∅ = 1  => sin²∅ = 1 - cos²∅ => sin²∅ = 1 - ( √3/3 )² =>

sin²∅ = 1 - (3/9) => sin²∅ = 1 - (1/3) = (3/3) - (1/3) = 2/3 => sin∅ = - √(2/3) =>

sin∅ = - √2/√3 => sin∅ = - √6/3

God with you!!!


3 0
3 years ago
A student has 54 coins in a bank. There are only quarters, nickels, and dimes in the bank. If there are twice as many dimes as q
r-ruslan [8.4K]
The student would have 18 dimes in the bank.. 54 coins. x+2x+3x=54
6x=54

18 dimes,
9 quarters
27 nickles.
5 0
3 years ago
Jolene wants to invest $2000 into a money market account. Interest is to be 6.5% compounded annually, and she wants to take the
timama [110]

Answer:

Interest = 650$

Step-by-step explanation:

Given:

Invest  Inv = 2000$, interest rate r = 6.5% compounded annually

and time n = 5 years

Formula for calculation is:

Int = (Inv · r · n) / 100

Int = (2000 · 6.5 · 5) / 100 = 650$

Int = 650$

God with you!!!

3 0
3 years ago
3z squared minus 6z if z = 5
max2010maxim [7]

Answer:

45

Step-by-step explanation:

Given

3z² - 6z ← substitute z = 5 into the expression

= 3(5)² - 6(5)

= 3(25) - 30

= 75 - 30

= 45

4 0
3 years ago
Read 2 more answers
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