Mathematics: The age of a father is 3 times the age of his son. 5 years ago, the father was 4times the son s age. represent the above statement by 2 linear equations in 2variables.

(A) f=3Step-by-step explanation:If We know by the rule of complementary trigonometric ratios that:...

The age of a father is 3 times the age of his

ineedhelp2285

13.01.2022

Step-by-step explanation:

x = father's age

y = son's age

Nowadays:

3x = y

5 years ago:

4(x - 5) = y - 5

4x - 20 = y - 5

4x = y + 15

I hope I've helped you.

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dezmondpowell

20.12.2021

(A) f=3

Step-by-step explanation:

If cos(22f - 1) = sin(7f + 4)

We know by the rule of complementary trigonometric ratios that:

$\sin \theta =cos (90^\circ-\theta)\\$Therefore: \theta + (90^\circ-\theta)=90^\circ$

$A$pplying this rule$\\22f-1+7f+4=90^\circ\\29f+3=90^\circ\\29f=90^\circ-3\\29f=87^\circ\\$Divide both sides by 29\\f=3$

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