A^2 + B^2=C^2 Pythagorean’s Theorem
(3a)^2 + (4a)^2 = C^2
9a^2 + 16a^2 = C^2
a^2(9+16) = C^2
a^2(25) = C^2
sqrt ((a^2(25)) = sqrt (C^2)
5a=C=|PR|
shortcut would have been to recognize a 3-4-5 triangle
Mrs. Jenkins donate £420 to charity.
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the singleunit value
We have,
Mrs. jenkins sold= 300 tickets for £3 each
The price of total tickets sold=300x3=900
As, The probability that someone wins a prize is 0.2.
So, 300 /0.2
= 60
Each prize cost £8.so,
=60x8
=480
Thus,
900-480=420
Hence, Mrs Jenkins would give £420 to charity.
Learn more about unitary method here:
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Answer:
increase
Step-by-step explanation: I hope im right
The slope of a line that is perpendicular to a line whose equation is −2y = 3x + 7 is
Solution:
Given that we have to find the slope of the line that is perpendicular to a line whose equation is −2y = 3x + 7
The slope intercept form is given as:
y = mx + c
Where "m" is the slope of line and "c" is the y - intercept
Given equation is:
On comparing the above equation with slope intercept form,
We know that product of slope of a line and slope of line perpendicular to it is -1
Therefore,
Thus slope of line that is perpendicular to given line is