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4 years ago

A shirt is on sale for 15% off the original price of 27$. what is the sale price of the shirt

Mathematics

1 answer:

maks197457 [2]4 years ago

6 0

4.05, is the amount you save.

27-4.05=22.95

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betty has a cow.the cow produces 5 liters of milk in a day. if the cows diet is improved the cow will produce 200% more milk.how

DanielleElmas [232]

We can start by setting out what we know simply.

Cow produces 5 liters a day.

The cow can make 200% more.

200% of 5, is 10.

If he makes 200% more, he will make 10 liters more.

He already makes 5.

10+5 is what he will make.

FINAL ANSWER:

"If the cow's diet is improved, the cow will produce 15 liters of milk in a day."

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3 years ago

Can ya'll answer this question?

diamong [38]

The third fin is the answer.

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3 years ago

What is the answer because my son is strugilling

ale4655 [162]

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3 years ago

Show work and explain with formulas.

Natasha_Volkova [10]

23 Answer: $\bold{\dfrac{29,524}{9}}$

Step-by-step explanation:

$\dfrac{1}{9}+\dfrac{1}{3}+1+...+2187\\\\\\a_1=\dfrac{1}{9}=3^{-2}\qquad r=3\qquad a_n=2187\\\\\underline{\text{Find n:}}\\a_n=a_1\cdot r^{n-1}\\2187=3^{-2}(3)^{n-1}\\2187=3^{n-3}\\3^7=3^{n-3}\\7=n-3\\10=n$

$\underline{\text{Find the sum:}}\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\\\S_{10}=\dfrac{\frac{1}{9}(1-3^{10})}{1-3}\\\\\\.\quad =\dfrac{1-59,049}{(9)(-2)}\\\\\\.\quad =\dfrac{-59,048}{9(-2)}\\\\\\.\quad =\large\boxed{\dfrac{29,524}{9}}$

24 Answer: $\bold{\dfrac{364}{9}}$

Step-by-step explanation:

$a_1=27\qquad r=\dfrac{1}{3}\qquad n=6\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\\\S_6=\dfrac{27(1-\frac{1}{3}^6)}{1-\frac{1}{3}}\\\\\\.\quad =\dfrac{27(\frac{728}{729})}{\frac{2}{3}}\\\\\\.\quad =\dfrac{27(728)}{729}\cdot \dfrac{3}{2}\\\\\\.\quad =\large\boxed{\dfrac{364}{9}}$

25 Answer: n=7

Step-by-step explanation:

$\{-6,\ -12,\ -24,\ ...\ \}\\\\a_1=-6\qquad r=2\qquad S_n=-762\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\\\-762=\dfrac{-6(1-2^n)}{1-2}\\\\\\-762=\dfrac{-6(1-2^n)}{-1}\\\\\\\dfrac{-762}{6}=1-2^n\\\\-127=1-2^n\\\\-128=-2^n\\\\128=2^n\\\\2^7=2^n\\\\\large\boxed{7=n}$

3 0

3 years ago

Read 2 more answers

Tickets numbered 1 to 20 are mixed up and drawn at random. What is the probability that the ticket drawn has a number which is a

Lilit [14]

Answer:

B. 2/5

Step-by-step explanation:

First we write down the numbers.

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.

Multiplies of three or five above are: 6,9,10,12,15,16,19,20 (there are 8)

So 8/20.

8/20 simplified is 2/5

So, it's B.

6 0

3 years ago