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2 years ago

Find the original price of a pair of shoes if the sale price is $40 after a %20% discount.

Mathematics

1 answer:

borishaifa [10]2 years ago

4 0

That would be around $200. Because you would take 40 devide by .2 and get 200.

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What is the sum of the geometric series sigma 15,x=0, 2(1/3)x

WINSTONCH [101]

Answer:

$\sum_{x=0}^{15}2(\frac{1}{3})^x=3.0$

Step-by-step explanation:

We want to evaluate:

$\sum_{x=0}^{15}2(\frac{1}{3})^x$

When x=0, we obtain the first term of the geometric series as

$a_0=2(\frac{1}{3})^0$

The common ratio of this geometric series is $r=\frac{1}{3}$

The sum of the first n-terms of a geometric series is

$S_n=\frac{a(1-r^n)}{1-r}$

From x=0 to x=15, we have 16 terms.

The sum of the first 16 terms of the geometric series is

$S_{16}=\frac{a(1-(\frac{1}{3})^{16})}{1-\frac{1}{3}}=2.99999993031$

$\sum_{x=0}^{15}2(\frac{1}{3})^x=3.0$ to the nearest tenth.

4 0

3 years ago

The sum of two numbers is 33. One number is 17 less than the other. Find the numbers. the smaller number is ? The larger number

Genrish500 [490]

Answer:

8 and 25

Step-by-step explanation:

We can set up an equation to help solve this problem.

Let x represent the smaller number

x+(x+17)=33

2x+17=33

2x=16

x=8

The smaller number is 8

Add 17 to 8

The larger number is 25

8 0

2 years ago

Read 2 more answers

Can someone please help me I don’t get this (Due today)

Inga [223]

Answer:

Which grade's book exercise is this?

8 0

2 years ago

Please helpp pleaseee

Elena L [17]

Answer:

i belive it is 900

Step-by-step explanation:

(n-2)180

(7-2)180

(5)180

900

5 0

3 years ago

Dyna has ran 3 km of her race. If she is 65% of the way done. how long is the race altogether? Round to the nearest tenth.

Eddi Din [679]

Lets say the race is x km long.

That means she ran 65% of x.

And that also means that 65% of x = 3

So 65%*x=3

65/100x=3

x=3*100/65

x=300/65

x=4.62

6 0

2 years ago