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Dmitriy789 [7]
2 years ago
13

The common cardinal has a diet that is 85% grain. What is the probability that in the random sample 30 common cardinals that the

ir diets are between 81% and 86% grain?
Mathematics
1 answer:
aliina [53]2 years ago
7 0

Answer:

did you add the whole question and i am saying this here because it won't let me comment

Step-by-step explanation:

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The photography club decided to go on a field trip to the Andy Warhol museum. They had to break into smaller groups once they go
Diano4ka-milaya [45]
A)
Let x represent the cost of 1 student, and y the cost of 1 teacher.

B)
In the first group, there's 25 students and 2 teachers. Their total cost is $97.50
So 25x + 2y = 97.50
In the second group, there's 32 students and 3 teachers. Their total cost is $127
So 32x + 3y = 127

We get the following system of equations:
25x + 2y = 97.50 (1)
32x + 3y = 127 (2)

C)
25x + 2y = 97.50 (1)
32x + 3y = 127 (2)

In equation (1)
25x + 2y = 97.50
25x + 2y - 2y = 97.50 - 2y
25x = 97.50 - 2y
25x / 25 = 97.50/25 - 2y/25
x = 3.9 - (2/25)y

In equation (2), let's replace x by its algebraic value
32x + 3y = 127
32(-2/25y + 3.9) + 3y = 127
11/25y + 124.8 = 127
11/25y + 124.8 - 124.8 = 127 - 124.8
11/25y = 2.2
(11/25y) / (11/25) = 2.2 / (11/25)
y = 5

x = -2/25y + 3.9
x = -2/25 * 5 + 3.9
x = 3.5

So the cost of each student is $3.5, and the cost of each teacher is $5.

Hope this helps! :)




4 0
3 years ago
Multiply. Express your answer as a fraction in<br> Simplest form<br> 8.33 x V 144
adell [148]

Answer

65-44.78>4

Step-by-step explanation

4 1
2 years ago
Read 2 more answers
Y and x have a proportional relationship and y=9 when x=2 what is the value of y when x=3
Paladinen [302]
If they are proportional, then y/x should always be the same.

So 9/2= 4.5

We need to find the y value at x=3 to make y/x equal 4.5

4.5 = y/3

y = 4.5*3 = 13.5
3 0
3 years ago
Please help me with this!!
Sergeu [11.5K]

Answer:

yea

Step-by-step explanation:

3 0
3 years ago
Bella went to a carnival and played a game that involved throwing a basketball into a moving basket. She had two minutes to make
GalinKa [24]

Answer:

6

Step-by-step explanation:

12*2=24 24/4=6

8 0
3 years ago
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