4 years ago

Which expression was simplified

Mathematics

2 answers:

inessss [21]4 years ago

8 0

First one is the correct answer

Ber [7]4 years ago

7 0

The first one is simplified!

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3 years ago

Suppose we want to choose 6 letters, without replacement, from 15 distinct letters. (A) how many ways can this be done, if the o

Olenka [21]

Answer:

Below in bold.

Step-by-step explanation:

A.This is the number of combinations of 6 from 15

= 15C6

= 15! / (15-6)! 6!

= 5,005 ways.

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3 years ago

What is the vertex of the parabola y=2(x-3)^2+5 NEED ANSWER NOWWW

MArishka [77]

Answer:

(3,5)

Step-by-step explanation:

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3 years ago

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3 years ago

Which ordered pair (a,b) is a solution to the given system of linear equations.

egoroff_w [7]

Answer:

A. (-13,-3)

Step-by-step explanation:

Solve the system of two equations:

$\left\{\begin{array}{l}-2a+3b=14\\a-4b=3\end{array}\right.$

From the second equation:

$a=3+4b$

Substitute it into the first equation:

$-2(3+4b)+3b=14\\ \\-6-8b+3b=14\\ \\-8b+3b=14+6\\ \\-5b=20\\ \\5b=-20\\ \\b=-4$

So,

$a=3+4b=3+4\cdot (-4)=3-16=-13$

The solution is (-13,-4)

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3 years ago

Read 2 more answers