MATHEMATICS HIGH SCHOOL

In a survey of 150 students, 90 students were taking algebra and 30 were taking biology. What is the least number of students who could have been taking both courses? What is the greatest number of students who could be taking both courses? What is the greatest number of students who could have been taking neither course?

Answers

Answer 1
Answer:

The least number of students who could have been taking both courses is 0.

The greatestnumber of students who could be taking both courses is 30.

The greatestnumber of students who could have been taking neither course is 30.

What is subtraction?

The process of subtracting one number from another is known as subtraction.

Given that, there are a total of 150 students out of which 90 were taking algebra and 30 were taking biology.

The remaining students are:
150 - 90 - 30

= 30

Now, the remaining 30 students may take both subjects or neither.

Therefore, the least number of students who could have been taking both courses is 0.

The greatestnumber of students who could be taking both courses is 30.

The greatestnumber of students who could have been taking neither course is 30.

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Answer 2
Answer: 30 students could of been taking both courses and 60 with no course

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Find the area of a circle with a radius of 7.1 m to the nearest square unit.

Answers

Answer:

158 m2

Step-by-step explanation:

A=πr2=π·7.12≈158.36769m²
To find the area you do pi r squared. 7.1 squared is 52.54. 52.54 X pi =165.06. The answer is 165.06 cm2.

7(x-2) = 3(x+4)? Please help soon!

Answers

First use distribution properties and times everything in the brackets by the number before it
So
7x-14= 3x+ 12
Then subtract the x value from one side and move it to the other
Example
7x-14=3x+12
-3x. -3x
Therefore you’d have
4x-14=12
then move your negative 14
4x-14=12
+14 +14
4x=26
Divide both sides by 4
X=6.5

Answer:

x=6.5

Step-by-step explanation:

7(x-2)=3(x+4)

Step 1. Distribute

7x-14=3x+12

Step 2. Combine like terms and calculate

4x=12+14

Step 3. Divide 4 on both sides

4x=26

Solution:

x=6.5

Hope this helps! :)

Do you guys know the domain and range to this?

Answers

The domain is any number greater then negative five. The range is any number greater than negative two.

Jim is building a model airplane. The scale is 1 in : 40 ft. The actual wingspan of the plane is 211 feet. How long will the wings of the model be?

Answers

Answer:

422 that's how long the wingspan will be.

A gallon of milk costs $4.20. What is the cost per quart? (1 gallon = 4 quarts)

Answers

Answer:

$1.05

Step-by-step explanation:

if you do 4.20 divided by 4 you get 1.05 and to see if its right you multiply 1.05 by 4 and you get 4.20.

An election campaign organizer bought 20,000 buttons to hand out for a candidate. The organizer handed out 14,000 of the buttons before receiving the next shipment of 15,500 buttons. On the day of the election, the organizer handed out another 18,250 buttons. How many buttons were left after the election?

Answers

Final answer:

The election campaign organizer started with 20,000 buttons, gave out 14,000, received another 15,500 buttons, and handed out another 18,250. After these transactions, they were left with 3,250 buttons.

Explanation:

To solve this mathematics problem, we need to add the total number of buttons the election campaign organizer had, and then subtract the buttons that were distributed. Initially, the campaign organizer had 20,000 buttons. Out of these, they distributed 14,000, leaving them with 20,000 - 14,000 = 6,000 buttons.


Then, they received a new shipment of 15,500 buttons, increasing their total to 6,000 + 15,500 = 21,500 buttons. On election day, they distributed 18,250 buttons. So, after subtracting this amount, we know that 21,500 - 18,250 = 3,250 buttons were left after the election.

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Answer: 3,250

Step-by-step explanation:
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