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fomenos
2 years ago
9

Sharma is three years older than Anand. Six years ago Sharma's age was four times Anand's age. Find their ages?

Mathematics
1 answer:
Misha Larkins [42]2 years ago
5 0

Answer:

See explanation

Step-by-step explanation:

Anand = x

Sharma = x + 3

6 years ago

Anand = x - 6

Sharma = (x + 3) - 6

= x + 3 - 6

= x - 3

Sharma age = 4 (x - 6)

Six years ago Sharma's age was four times Anand's age.

x + 3 = 4(x - 6)

x - 3 = 4x - 24

x - 4x = -24 + 3

- 3x = - 21

x = - 21/-3

x = 7

Anand = x = 7 years

Sharma = x + 3

= 7 + 3

= 10 years

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Novay_Z [31]

Answer:

AB = √18 , BC=√18 and CA =4

AB²+BC²  = CA² and AB=BC

ΔABC isosceles right  angled triangle.

Step-by-step explanation:

Given vectors are  7j+ 10k,-i + 6j+6k and - 4i + +9j + 6k

A( 0,7,10), B( -1,6,6) C(-4,9,6)

AB⁻ = OB-OA = -I+6j+6k-(7j+10k) = -I-j-4k

AB = \sqrt{1+1+16} = \sqrt{18}

BC = OC-OB = -4i+9j+6k-(-I+6j+6k) = -3i+3j

BC=\sqrt{9+9} =\sqrt{18}

CA = OA-OC = 7j+10k - (- 4i + +9j + 6k ) = 4i-2j+4k

CA = \sqrt{16+4+16} =\sqrt{36} =4

Since AB²+BC²  = CA²

And AB=BC

Therefore it follows that ΔABC is a right angled isosceles triangle



3 0
2 years ago
please solve this problem : 9 boys take part in a relay event each boy runs 3/5 of a mile how far do the boys run please help
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Find the length of the longest line segment that can be drawn on a rectangular board 3.07m by 2.24m
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For rectangle
l=3.07m
b=2.24m
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2 years ago
What is the answer to 13p12=
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156p

Step-by-step explanation:

13p×12

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mylen [45]

Answer:

dy/dx = -1/√(1 - x²)

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Step-by-step explanation:

Given the function cos y = x

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So, the interval is

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6 0
2 years ago
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