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Andru [333]
2 years ago
14

The student will study for the quiz on which he is likely to do worse by guessing. Which quiz should he study for?

Mathematics
1 answer:
aleksandr82 [10.1K]2 years ago
6 0

Based on the probabilities given, the student will study for B. Science, because the probability of getting all questions correct is 0.008, which is lower than for history (0.063).

<h3>Which subject will the student study?</h3>

Out of the subjects the student has to take, the subject that have the lowest probability of passing is Science at 0.008.

This is the subject that they would most likely study because they have the highest chance of failing if they guess.

Find out more on probability at brainly.com/question/23816533.

#SPJ1

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Sarah would like to make a 6 lb nut mixture that is 60% peanuts and 40% almonds. She has several pounds of a mixture that is 80%
ivolga24 [154]

Answer:  

<em>a.  The system of equations that models the situation is....</em>

<em>     0.80x+0.50y=3.60\\\\ 0.20x+0.50y=2.40</em>

<em>b.  The solution to the system:  x = 2 and y = 4 </em>

<em>The amount of 80/20 mixture is 2 pounds and the amount of 50/50              mixture is 4 pounds.</em>

Step-by-step explanation:

Suppose, the amount of 80/20 mixture is  x pounds and the amount of 50/50 mixture is  y pounds.

So, the amount of peanuts in 80/20 mixture = 0.80x pound and the amount of almonds in 80/20 mixture =0.20x pound.

And the amount of peanuts in 50/50 mixture =0.50y pound and the amount of almonds in 50/50 mixture =0.50y pound.

Now, Sarah would like to make a 6 pounds nut mixture that is 60% peanuts and 40% almonds.

So, the amount of peanuts in that mixture =(6\times 0.60)=3.60 pounds

and the amount of almonds in that mixture =(6 \times 0.40)= 2.40 pounds.

So, the system of equations will be.........

0.80x+0.50y=3.60 ...................(1)\\\\ 0.20x+0.50y=2.40...................(2)

Subtracting equation (2) from equation (1), we will get.....

(0.80x+0.50y)-(0.20x+0.50y)=3.60-2.40\\ \\ 0.60x=1.20\\ \\ x= \frac{1.20}{0.60}=2

Now, plugging this x=2 into equation (1), we will get......

0.80(2)+0.50y=3.60\\ \\ 1.60+0.50y=3.60\\ \\ 0.50y=3.60-1.60=2\\ \\ y=\frac{2}{0.50}=4

So, the amount of 80/20 mixture is 2 pounds and the amount of 50/50 mixture is 4 pounds.

7 0
3 years ago
What’s the correct answer for this question?
xxMikexx [17]

Answer:

12.22

Step-by-step explanation:

To find HI, you have to use tangent. tanx=\frac{opposite}{adjacent}

tan(42°)=\frac{11}{HI} , then you multiply HI to both sides of equation and divide tan(42).

To get <em>HI</em>=\frac{11}{tan(42)}

Which makes HI equal 12.2167

5 0
2 years ago
What is -2-(-7) <br><br> Plsss explain
MrMuchimi

Answer:

14 I think I'm. it completely sure

8 0
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Find the value of p if x3 ÷ xp = x5
Soloha48 [4]

Let's solve for p.

x3xp=x5

Step 1: Divide both sides by x^2.

px2x2=x5x2

p=x3

Answer:

p=x3

4 0
2 years ago
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