Science, asked by amanullahbakhshi, 4 days ago

Q2. Make x the subject of the formula /4
i. Find the value of x when y = - 3
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ii. Find the value of y when x = 2

Q3.Look at the data given in the histogram and answer the questions. /5

i. How many trees do have the height from 15.5 to 20.5 meters ?

ii. Find the interval of height where the maximum number of trees are there.

iii. How many trees do have the height from 35.5 to 40.5 meters ?

iv. What is the difference between the number of trees in the height 20.5 to 25.5
and 45.5 to 50.5 ?

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v. Find the total number of trees in the height interval 45.5 to 55.5 meters.

Answers

Answered by mumairtariq72

Answer:

Q 2 i) To make x the subject of the formula, we need to isolate the x term on one side of the equation.

Given the formula:

y = (4x - 3) / 7

To isolate the x term, we can multiply both sides of the equation by 7:

7y = 4x - 3

Then, we can add 3 to both sides of the equation to eliminate the "-3" term:

7y + 3 = 4x

Finally, we can divide both sides of the equation by 4 to isolate the x term:

x = (7y + 3) / 4

Therefore, the value of x when y = -3 is:

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

= (-21 + 3) / 4

= -18 / 4

= -4.5

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