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adelina 88 [10]
2 years ago
11

Marco needs to buy cat food. At the nearest store, 6 bags of cat food cost 19.50. How much would Marco spend on 3 bags of cat fo

od. proportional relationships

Mathematics
1 answer:
weeeeeb [17]2 years ago
3 0

6 bags cost 19.50

3 is half of 6

we need to find half of 19.50

in your calculator type 19.50/2

you'll find 9.75,

Hope this helped!

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Evaluate the expression when a = 9, b = 2, c = - 6 and d= -4<br> a-b<br> c-d
Anna35 [415]

Answer:

1. 9-2=7

2. -6-(-4)=-2

Step-by-step explanation:

a=9

b=2

c=-6

d=-4

8 0
1 year ago
1/3(-15 divide 1/2) 1/4 what does it equal
Dafna1 [17]

Answer:

-2.5 or - 2 1/2

Step-by-step explanation:

Writing out the expression Mathematically ;

1/3(-15÷1/2)1/4

Using PEMDAS :

Solving the bracket first

(-15 ÷ 1/2) = (-15 * 2/1) = - 30

We have :

1/3(-30)1/4 = - 10 * 1/4 = - 10 / 4 = - 2.5

-2.5 = - 2 1/2

3 0
2 years ago
Box 1 contains 1000 lightbulbs of which 10% are defective. box 2 contains 2000 lightbulbs of which 5% are defective. (a) suppose
madreJ [45]

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6 0
3 years ago
A breakfast cereal producer makes its most popular product by combining just raisins and flakes in each box of cereal. The amoun
yarga [219]

Using the normal distribution, it is found that there is a 0.9192 = 91.92% probability that the total amount of product is less than 575 g.

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • When two normal variables are added, the mean is the sum of the means while the standard deviation is the square root of the sum of the variances.

In this problem, the product is composed by flakes and raisins, and we have that:

\mu_F = 370, \sigma_F = 24, \mu_R = 170, \sigma_R = 7

Hence, the distribution for the total amount of product has <u>mean and standard deviation</u> given by:

\mu = \mu_F + \mu_R = 370 + 170 = 540

\sigma = \sqrt{\sigma_F^2 + \sigma_R^2} = \sqrt{24^2 + 7^2} = 25

The probability that the total amount of product is less than 575 g is the <u>p-value of Z when X = 575</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{575 - 540}{25}

Z = 1.4

Z = 1.4 has a p-value of 0.9192.

0.9192 = 91.92% probability that the total amount of product is less than 575 g.

A similar problem is given at brainly.com/question/22934264

5 0
2 years ago
It cost $10.50 to buy 3 medium pizzas. How much does it cost to buy 10 medium pizzas?
melomori [17]
It would cost $35 because 10.50 divided by 3 = 3.5x10=35

5 0
3 years ago
Read 2 more answers
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