3 years ago

What are the values of x and y ?

Mathematics

1 answer:

nlexa [21]3 years ago

4 0

Answer:

X=69 Y=69

Step-by-step explanation:

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A teacher surveys 30 students on the the number of books they read over the summer.The data are represented in the box plot what

Margaret [11]

Answer:

Wheres the plot?

Step-by-step explanation:

8 0

2 years ago

Patty has 20$ to spend on gifts for her friends.her mother gives her 5$ more .if each gift costs 5$ , how many gifts can she buy

nevsk [136]

She can buy 5 gifts
$20+$5=$25
$25÷$5=5 gifts

7 0

2 years ago

Read 2 more answers

Find the indicated root

Sever21 [200]

So you have to put 25 inside the blank box.

look at the attached picture

Hope it will help you

Good luck on your assignment

6 0

3 years ago

Read 2 more answers

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

Can anyone help me?.

4vir4ik [10]

The third one is the correct answer

7 0

2 years ago