I'll explain it simply for you
1st question
Of course you know phythagoras theorm
You even wrote it up there
It states that the sum of the square of the two sides of an equilateral triangle is equal to the square of the hypotenuse

Where C is the hypotenuse
*NOTE* :
HYPOTENUSE is the greatest side in a triangle!!
And that's where your mistake is!
So you should take the greatest side as C
So in Q3. 7, 24 and 26 are the given numbers
You'll make the smaller two numbers a and b and the greatest number C
Using the Formula you'll solve the left side first which is

Then the right side which is

And if both are equal then it is a right triangle otherwise it isn't!
Let
a=7
b=24
c=26
a^2 + b^2
7^2 + 24^2
49 + 576 = 625
GREAT, Now the right side
26^2 = 676
Since they aren't equal it isn't a right angled triangle...
Then let
a=7.5
b=10
c=12.5
7.5^2 + 10^2
= 56.25 + 100
= 156.25
12.5^2 = 156.25
They are EQUAL
Therefore it is a right triangle too
Hopefully I helped
Answer: <u>₹759407.56</u>
Step-by-step explanation: Total No. of passengers = 400
1 Coach = 50 passengers
∴Total No. of coaches= 400/50=8 coaches.
Cost for each passenger= £23
∴Total cost for 400 passengers= 400x£23
= £9200 ( 1£=82.5443 ₹) ∴ Total cost for passengers = <u>₹759407.56</u>
Money spent per mile= 70p
∴Money spent for 200 miles= 200x70p=14000p
(1₹=100p) thus, 14000p=<u>₹140</u>
<u><em>Total profit</em></u>= <em>Money from the passengers- Money spent for fuel</em>
∴<u>₹759407.56- ₹140= ₹7,59,407.56</u>
<u>Actually I am a 9th grader and I have tried this question, so I am not sure for my answer, But I have tried my level best.</u>
Answer:
It is 33. Answer B is correct.
First simplifying step by step.
<span>16x^5+12xy-9y^5
Answer is = </span><span><span><span>16<span>x^5</span></span>+<span><span>12x</span>y</span></span>+</span>−<span>9<span>y<span>5
It will help you.</span></span></span>
49.95 Would be the Registration fee because it is a number by itself, 24.72m would be the monthly payment because it is being multiplied by m, m being months.