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2 years ago

Help please I need for tomorrow

Mathematics

2 answers:

Alexeev081 [22]2 years ago

7 0

The answer is C.

to find the least common denominator, you can try multiplying the numbers. But, there could be a lower number. for example - 3/6 and 2/4. 6×4 = 24, but the LCD is 12 because 6×2 and 4×3. LCD is the lowest number they can both go into equally. good luck

daser333 [38]2 years ago

4 0

The answer is going to be C

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luis wants to buy a skateboard that usually sells for $79.99. all merchandise is discounted by 12%. what is the total cost of th

aivan3 [116]

ANSWER:

The total cost of the skate board is $74.61.

SOLUTION:

Given, Luis wants to buy a skateboard that usually sells for $79.99. all merchandise is discounted by 12%. luis has to pay a state sales tax of 6.75%.

We need to find what is the total cost of the skateboard.

Final cost is nothing but original amount subtracted by discount and added with tax.

final cost = original cost – discount + sales tax

Original cost = $79.99

Discount = 12% of original cost

$\begin{array}{l}{=12 \% \times 79.99} \\\\ {=\frac{12}{100} \times 79.99} \\\\ {=\frac{959.88}{100}} \\\\ {=9.5988}\end{array}$

discount is $9.6 approximately

Sales tax = 6% of cost after discounting

$\begin{array}{l}{=6 \% \times \text { (original cost - discount) }} \\\\ {=\frac{6}{100} \times(79.99-9.6)} \\\\ {=\frac{6}{100} \times(70.39)} \\\\ {=\frac{422.34}{100}} \\\\ {=4.2234}\end{array}$

Sales tax is $4.22 approximately

Now, final cost = 79.99 – 9.6 + 4.22

= 84.21 - 9.6

= 74.61

Hence, the total cost of the skate board is $74.61

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Which of the following equations is an example of inverse variation between variables x and y ?

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d) y = x/15 is an example of an inverse relation, with proportion constant = 1/15

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