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2 years ago

Maria has a 30% coupon for her $60 dollar jeans, what is the new price

Mathematics

2 answers:

yKpoI14uk [10]2 years ago

3 0

Answer:

$42

Step-by-step explanation:

Since she has a 30% coupon, the new price of the jeans will be 30% of the original price subtracted from the original price

Original price = $60

Therefore

30% of $60

Make 30% a decimal

30/100 x $60

0.3 x $60 = $18

New price = $60 - $18

= $42

The new price for the jeans is $42

Luba_88 [7]2 years ago

3 0

Answer: $42

Step-by-step explanation:

Since she has a 30% coupon, the new price of the jeans will be 30% of the original price subtracted from the original price

Original price = $60

You need to take out 30% of $60

Make 30% a decimal

.30 x $60

0.3 x $60 = $18

Now subtract the money she saved from the initial price to get her new price

New price = $60 - $18 = $42

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Write the quadratic equation whose roots are 1 and -5, and whose leading coefficient is 3.

Anna35 [415]

Step-by-step explanation:

they're is a neat little trick.

but first of all, "roots" means the 0 solutions of the equation. like

ax² + bx + c = 0

there are 2 solutions for x to make the whole expression equal 0.

these are the "roots".

now to the little trick :

when is a multiplication resulting in 0 ?

when at least one of the factors is 0.

and any quadratic expression can be written as multiplication of 2 factors. like

c(x - a)(x - b) = cx² - cax - cbx + cab

what are the "roots" or 0 points ?

either

c = 0

x - a = 0 | x = a

x - b = 0 | x = b

the leading coefficient = 3.

that means nothing else than c = 3.

root = 1 means (x - 1) is one factor.

root = -5 means (x + 5) is the other factor.

so, we have

3(x - 1)(x + 5) = 3x² + 12x - 15

and the equation is

3x² + 12x - 15 = 0

3x² + 12x = 15

7 0

1 year ago

Robert planted 12 daffodil bulbs and 18 tulip bulbs in his garden last winter. If all the bulbs sprout and

maw [93]

Answer:

Ratio 2:3 I think :)

Step-by-step explanation:

5 0

2 years ago

How to simplify this

algol [13]

To simplify this, you would have to turn b^-2 into a positive exponent.
To do this, we have to flip b^-2, which would get rid of the negate from the exponent: -2

3a^4 b^-2 c^3 / b^-2

Then we get the answer:

3a^4 c^3
------------
b^-2

I have a picture to clarify!
I hope this helped, let me know if you don't understand! ^.^