MATHEMATICS HIGH SCHOOL

Increase £240 by 30%?

Answers

Answer 1
Answer:


240*0.30=72    

72+240=312 euro
Answer 2
Answer: 240 x 0.30 = 72    
72 + 240 = 312 

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Of the students in sixth grade, 3/5 pack their lunch. What percent of students pack their lunch? * A. 70% B. 60% C. 66.6% D. 54% ​

Answers

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

The percentage of students who packed their lunch is 60%.

Option B is the correct answer.

What is a percentage?

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Requiredpercentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50 /100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Of the students in sixth grade:

The number of students who packed their lunch = 3/5

This means,

Out of 5 students, 3 packed their lunch.

We can find the percentage by multiplying 3/5 by 100.

= 3/5 x 100

= 3 x 20

= 60%

Thus,

The percentage of students who packed their lunch is 60%.

Option B is the correct answer.

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The percentage of students who pack lunch is 60%.

What is Equation Modelling?

Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

We have of all the students in sixth grade, 3/5 pack their lunch.

Assume that the percentage of students who pack lunch is [x]%. So -

x% = 3/5 x 100 = 60%

Therefore, the percentage of students who pack lunch is 60%.

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An airplane over the Pacific Ocean sights an atoll at an 7° angle of depression. If the plane is 663 m above the water, how many kilometers is it from a point 663 m directly above the atoll?(Hint: Make sure your calculator is in degrees!)A. 5399.7 km
B. 5.4 km
C. 81.41 km
D. 760.8 km

Answers

You need to draw the diagram to understand the problem easily. Teh diagram will show the right triangle, acute angle with the base  7º, height is 663 m, and "x" is the base of the triangle. 

using the tangent ratio: 

tanΘ = opposite / adjacent

tan7º = 663 m / x 

x = 663 m / tan7º
x = 5,399.7 m 

change m to km. 1,000 m = 1km

5,399.7m * 1km/1,000 m = 5,399.7 km/1000 = 5.3997 km or 5.4 km

B. 5.4 km 

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!Factor x^2 + 2x - 15.

A) (x - 5)(x + 3)

B) (x - 5)(x - 3)

C) (x + 5)(x + 3)

D) (x + 5)(x - 3)

Answers

x^2 + 2x - 15=\n\nx^2-3x+5x-15=\n\nx(x-3)+5(x-3)=\n\n(x+5)(x-3) \Rightarrow \text{D}

An arc on a circle measures 85°. The measure of the central angle, in radians, is within which range?

Answers

0 to π/2 radians i might be wrong but i tried helping

Answer:

The first option 0 to π/2 radians

Step-by-step explanation:

Convert 129/7 into a mixed number

Answers

18 and 3/7
Because i can write by phone. So just write 18 in the left side of 3/7

Solve for y xy+p=5
y=5-p-x
y=(5-p)/x
y=5-px

Answers

To isolate y you need to bring all the other variables to the other side.

Final answer:

To solve for y in the given equation xy + p = 5, we subtract p from both sides and divide by x to isolate y.

Explanation:

To solve for y in the equation xy + p = 5, we want to isolate y on one side. We can do this by subtracting p from both sides of the equation:

xy + p - p = 5 - p

Simplifying:

xy = 5 - p

Next, we can divide both sides of the equation by x to solve for y:

y = (5 - p) / x

So, the solution for y in terms of x and p is y = (5 - p) / x.

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