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2 years ago

Find out the Range coefficient of the range

Mathematics

1 answer:

Alex777 [14]2 years ago

7 0

Answer:

0.4494

Step-by-step explanation:

Given :

marks number of students

20-29 8

30-39 12

40-49 20

50-59 7

60-69 3

The range Coefficient is obtained thus :

Range Coefficient = (Xm - Xl) / (Xm + Xl)

Where ;

Xm = Mid value of highest class = (60+69)/2 = 64.5

Xl = Mid value of lowest class = (20+29)/2 = 24.5

Range Coefficient = (64.5 - 24.5) / (64.5 + 24.5)

Range Coefficient = 40 / 89 = 0.4494

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2 years ago

3.4(x+1.58)=-11.288 value of x.

Alexeev081 [22]

3.4(x+1.58)= - 11.288

Step 1: Distribute 3.4 to the numbers inside the parentheses (x+1.58)

3.4x + (3.4×1.58)= - 11.288

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Step 2: Bring 5.372 to the right side by subtracting it to both sides

3.4x + (5.372 - 5.372 ) = (-11.288 - 5.372)

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3.4x = -16.66

Step 3: Isolate x by dividing 3.4 to both sides

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Hope this helped!

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3 years ago

Use the information to solve the triangle. Round your answers to two decimal places. Hint: draw a sketch first to determine if y

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Answer:

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2 years ago