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3 years ago

Sara buys 3 of the same type of dress, but in different colors. If she spends a total of $80.34, how much does each dress cost?

2 answers:

6 0

For this case we must find the unit cost of the dresses Sara bought taking into account that I spend a total of $ 80.34. To do this, we must divide the total cost by 3.

Let the variable "x" be the unit cost for each dress.

$x = \frac {80.34} {3}\\x = 26.78$

Thus, each dress cost Sara 26.78 $

Answer:

Each dress cost Sara 26.78 $

Musya8 [376]3 years ago

5 0

Answer:

80.34 / 3 = 26.78

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Elanso [62]

Answer:

p = 0.38, n = 20

The probability that he throws more than 10 strikes = 0.09233

Step-by-step explanation:

Binomial distribution function is represented by

P(X = x) = ⁿCₓ pˣ qⁿ⁻ˣ

n = total number of sample spaces = number of times Jack wants to bowl = 20

x = Number of successes required = number of strikes he intends to get

p = probability of success = probability that Jack throws a strike = 0.38

q = probability of failure = probability that Jack doesn't throw a strike = 0.62

P(X > x) = Σ ⁿCₓ pˣ qⁿ⁻ˣ (summing from x+1 to n)

P(X > 10) = Σ ²⁰Cₓ pˣ qⁿ⁻ˣ (summing from 11 to 20)

P(X > 10) = [P(X=11) + P(X=12) + P(X=13) + P(X=14) + P(X=15) + P(X=16) + P(X=17) + P(X=18) + P(X=19) + P(X=20)

P(X > 10) = 0.09233

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3 years ago

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2 years ago

Write 2. 2/3 as an improper fraction

Vesna [10]

$2\frac{2}{3}=\frac{2\cdot3+2}{3}=\frac{6+2}{3}=\frac{8}{3}$

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3 years ago

Read 2 more answers

Please answer soon I need this answer very quickly for math. Thank you!

Kazeer [188]

a. First five terms: 9,13,17,21,25

b. Sum of first 25 terms = 1425

c. The given sequence is an arithmetic sequence because the common difference between two consecutive terms is same.

Further explanation:

Given

Formula of sequence

$a_n=4n+5$

1. First 5 terms:

For first 5 terms, we have to put n=1,2,...5,

So,

$For\ n=1\\a_1=4(1)+5\\=4+5\\=9\\For\ n=2\\a_2=4(2)+5\\=8+5\\=13\\For n=3\\a_3=4(3)+5\\=12+5\\=17\\For\ n=4\\a_4= 4(4)+5\\=16+5\\=21\\For\ n=5\\a_5=4(5)+5\\=20+5\\=25\\First\ 5\ terms\ are: 9,13,17,21,25$