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professor190 [17]
2 years ago
14

Larji bought a dozen ears of corn. She prefers yellow corn, which costs 40 cents an ear, and her siblings prefer the peaches and

cream variety, which costs 50 cents an ear. She buys a mixture of each type and pays $5.70. Which system of equations represents the number of ears of corn of each type that Larji purchased? X + y = 12. 0.40 x + 0.50 y = 5.70. X + y = 12. X + 0.50 y = 5.70. X + y = 5.70. 0.40 x + 0.50 y = 12. X + y = 5.70. 0.40 x + y = 12.
Mathematics
2 answers:
Murrr4er [49]2 years ago
8 0

Answer:  x+y =12

0.40x+0.50y =5.70

Step-by-step explanation:

Let x = Number of ears of yellow corn

y - Number of ears of peaches and cream variety.

AS per given,

x+y = 1 dozen

⇒ x+y =12     [1 dozen =12]

Cost per ear of yellow corn = 40 cents = $0.40    [1 dollar = 100 cents, 1 cent = 0.01 dollar]

Cost per ear of peaches and cream variety = 50 cents = $ 0.50

Total cost ( in$): 0.40x+0.50y =5.70

Required system of equations represents the number of ears of corn of each type that Larji purchased:

x+y =12

0.40x+0.50y =5.70

DaniilM [7]2 years ago
4 0

Answer:

A

Step-by-step explanation:

on edge :)

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The blueberries in the farmer's market costs less than the blueberries from the grocery store. 

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7 0
2 years ago
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8.1g of sugar is needed for every cake made. How much sugar is needed for 6 cakes?
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48.6

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If you use 8.1g of sugar for 1 cake then 6 cakes will be 48.6g of sugar

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Then the number of adults follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 10

We have to evaluate:

P(fewer than 8 of the selected adults wear glasses or contact lenses)

P(x < 8)\\=1 - P(x = 8) - P(x = 9) - P(x = 10)\\=1 - \binom{10}{8}(0.75)^8(1-0.75)^2 - \binom{10}{9}(0.75)^9(1-0.75)^1- \binom{10}{10}(0.75)^10(1-0.75)^0\\=1 - 0.2815-0.1877-0.0563\\= 0.4745

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mash [69]

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Batch A        500                             200

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