3 years ago

Helpppppppppppppppppppp

Mathematics

1 answer:

m_a_m_a [10]3 years ago

4 0

Answer:

option a

1/3=x/42

..........

You might be interested in

Show twelve in four different ways use words pictures and numbers

Hunter-Best [27]

24/4: 24-12: 12+0: 12/1: 48/4: 72/6:

3 0

3 years ago

Solve the system of equations by transforming a matrix representing the system of equation into reduced row echelon form.

Gekata [30.6K]

Take the augmented matrix,

$\left[\begin{array}{ccc|c}2&1&-3&-20\\1&2&1&-3\\1&-1&5&19\end{array}\right]$

Swap the row 1 and row 2:

$\left[\begin{array}{ccc|c}1&2&1&-3\\2&1&-3&-20\\1&-1&5&19\end{array}\right]$

Add -2(row 1) to row 2, and -1(row 1) to row 3:

$\left[\begin{array}{ccc|c}1&2&1&-3\\0&-3&-5&-14\\0&-3&4&22\end{array}\right]$

Add -1(row 2) to row 3:

$\left[\begin{array}{ccc|c}1&2&1&-3\\0&-3&-5&-14\\0&0&9&36\end{array}\right]$

Multiply through row 3 by 1/9:

$\left[\begin{array}{ccc|c}1&2&1&-3\\0&-3&-5&-14\\0&0&1&4\end{array}\right]$

Add 5(row 3) to row 2:

$\left[\begin{array}{ccc|c}1&2&1&-3\\0&-3&0&6\\0&0&1&4\end{array}\right]$

Multiply through row 2 by -1/3:

$\left[\begin{array}{ccc|c}1&2&1&-3\\0&1&0&-2\\0&0&1&4\end{array}\right]$

Add -2(row 2) and -1(row 3) to row 1:

$\left[\begin{array}{ccc|c}1&0&0&-3\\0&1&0&-2\\0&0&1&4\end{array}\right]$

So we have $\boxed{x=-3,y=-2,z=4}$ .

3 0

3 years ago

Please please help me What is 5% of 200?

Leni [432]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Help me plsss I'm almost done

user100 [1]

Answer is C
I did it before

6 0

3 years ago

Read 2 more answers

explain why the sine of the acute angle of V is the same regardless of which right triangle is used to find its value

balu736 [363]

Answer:

Because triangle just used to help.

P.S. I’m not sure whether I answer your question

8 0

2 years ago