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3 years ago

12

Manuel finished his English assignment in 1/2 hours. Then he completed his chemistry assignment in 2/5 hours. What was the total

amount of time Manuel spent doing these two assignments?

1 answer:

Eduardwww [97]3 years ago

4 0

Answer: if you could bring it up, it would be 9/10 if not see if you can reduce that

Step-by-step explanation:

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Use the formula for nCr to evaluate the given expression.

LenaWriter [7]

Answer:

351

Step-by-step explanation:

27C2 = 27! / 2! × (27-2)!

= 27×26×25! / 2×1 × 25!

= 27×26 /2

= 27×13

= 351

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sleet_krkn [62]

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2 years ago

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The sum of two numbers is ten one number is five times the other

yanalaym [24]

Answer:

let the other number be x.

then,X+5=10

X =10-5

X=5

Step-by-step explanation:

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3 years ago

Let f(x) = -5x-1 and g(x)=x2 + 5.<br> = X<br> Find (f o g)(-2).

Anastasy [175]

Answer:

- 46

Step-by-step explanation:

evaluate g(- 2) then substitute the result into f(x) , that is

g(- 2) = (- 2)² + 5 = 4 + 5 = 9 , then

f(9) = - 5(9) - 1 = - 45 - 1 = - 46

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3 years ago

A car is 4m long and 1.8 m wide. A model of the car,similar in all respects, is 5 cm long. How wide is it?

Paladinen [302]

$x-width\ of\ small\ car\\\\1.8m=180cm\\4m=400cm\\\\From\ proportion:\\\\400\ \ \ -\ \ \ 5\\180\ \ \ -\ \ \ x\\\\400x=900\ \ \ \ |:400\\x=2.25\\\\The\ car\ is\ 2.25cm\ wide.$

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4 years ago