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DedPeter [7]
3 years ago
14

A truck is carrying grape juice, passion fruit jucie and pear juice bottles in a ratio of 2:1:2 if there are 20 grapes juices bo

ttles then how many passion fruit juice bottles are there?​
Mathematics
2 answers:
natima [27]3 years ago
5 0
10, if you multiply 2 by 10 you will get 20, 1 times 10 is 10.
Likurg_2 [28]3 years ago
4 0

Answer:

Number of passion juice bottles =  10

Step-by-step explanation:

ratio of grape juice, passion fruit juice and pear juice bottles are 2:1:2

Let the total number of juice bottles be x.

2/5 of x = 20

2/5 * x = 20

       2x =  20* 5

          x = 20*5 /2 = 10*5 = 50

Number of passion juice bottles = 1/5 * 50 = 10

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A fast food restaurant sells burgers and fries.
natima [27]
Hello!

You first make two equations

Let x stand for the price of a burger
Let y stand for the price of fries

3x + 2y = 7.15
4x + 3y = 9.93

multiply the top equation by 3 and the bottom equation by 2

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You can subtract the two equations

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Now you can put x into one of the original equations

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4 0
3 years ago
1.Suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6
Degger [83]

Answer:

a) For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71

b) z = \frac{76-71}{6}= 0.833

We can see the value of 76 labeled in the second picture attached

c) P(X>76)

And using the z score we have this using the normal standard table or excel:

P(Z>0.833) = 1-P(Z

d) n = 185*0.202= 154.16

We can say that about 154 and 155 students scored higher than Angelica

Step-by-step explanation:

We know that X represent the random variable scores of knowledge test and is given by:

X \sim N (\mu = 71, \sigma =6)

Part a

For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71

Part b

For this case the z score is given by:

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

And replacing we got:

z = \frac{76-71}{6}= 0.833

We can see the value of 76 labeled in the second picture attached

Part c

We want this probability:

P(X>76)

And using the z score we have this using the normal standard table or excel:

P(Z>0.833) = 1-P(Z

Part d

For this case we can find the number desired like this:

n = 185*0.202= 154.16

We can say that about 154 and 155 students scored higher than Angelica

6 0
4 years ago
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