2 years ago

HELP I WILL GIVE BRAINLIEST

Mathematics

2 answers:

Shalnov [3]2 years ago

8 0

Answer: a

Step-by-step explanation:

natima [27]2 years ago

8 0

Answer:

whats the question

Step-by-step explanation:

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2 years ago

Which one is correct ?

mina [271]

Answer:

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Find the greatest common factor of the following monomials 14b and 20b^6

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3 years ago

What is the surface area of the prism below<br> 2.5 m<br> 2 m<br> 10 m<br> 1.5 m

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3 years ago

In a certain game, a player can solve easy or hard puzzles. A player earns 30 points for solving an easy puzzle and 60 points fo

Aleksandr-060686 [28]

Answer: Second option.

Step-by-step explanation:

Let be "e" the number of easy puzzles Tina solved and "h" the number of hard puzzles Tina solved.

Set up a system of equations:

$\left \{ {{e+h=50} \atop {30e+60h=1,950 }} \right.$

You can use the Eliminationn Method to solve this system of equations:

Multiply the first equation by -30.
Add the equations.
Solve for "h".

Therefore, through this proccedure, you get:

$\left \{ {-30e-30h=-1,500} \atop {30e+60h=1,950 }} \right.\\.........................\\30h=450\\\\h=\frac{450}{30} \\\\h=15$

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3 years ago