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3 years ago

5

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $30.00, how much money is angela sav

ing on the dress

1 answer:

Musya8 [376]3 years ago

7 0

You have to calculate percent from the original price. Try it and show the results.

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Use the graphing calculator to graph the quadratic function y=2x^2 + 2x -40. what are the zeros of the function

ahrayia [7]

Answer:

The zeroes of this function are x=-5 and x=4

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3 years ago

Find the term indecent of x in the expansion of (x^2-1/x)^6

Mars2501 [29]

By the binomial theorem,

$\displaystyle \left(x^2-\frac1x\right)^6 = \sum_{k=0}^6 \binom 6k (x^2)^{6-k} \left(-\frac1x\right)^k = \sum_{k=0}^6 \binom 6k (-1)^k x^{12-3k}$

I assume you meant to say "independent", not "indecent", meaning we're looking for the constant term in the expansion. This happens for k such that

12 - 3k = 0 ===> 3k = 12 ===> k = 4

which corresponds to the constant coefficient

$\dbinom 64 (-1)^4 = \dfrac{6!}{4!(6-4)!} = \boxed{15}$

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3 years ago

We either walk 5 miles/day or ride a bike 10 miles/day. How many days will it take to cover a distance of at least 150 miles?

g100num [7]

Answer:

30 for walking, 15 for biking

Step-by-step explanation:

150 divided by 5

150 divided by 10

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3 years ago

Can someone help me with the answers 7- 14 pleaseeee and thank you!

Darina [25.2K]

You can get all the answeres easily.

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3 years ago

Find the values of the missing angles<br><br> HELP PLEASE DO ANY! I’ll give you brilliance

yan [13]

Answer:

1) x = 42 ; y = 42

2) x = 72 ; y = 48 ; z = 60

Step-by-step explanation:

1)

x + 42 + 96 = 180

x + 138 = 180

x = 42

y + 42 + 96 = 180

y + 138 = 180

y = 42

2)

x + 108 = 180

x = 72

y + 132 = 180

y = 48

z + x + y = 180

z + 72 + 48 = 180

z + 120 = 180

z = 60

3 0

3 years ago