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4 years ago

Fell from 44 degrees to -24 degrees

Mathematics

1 answer:

Shalnov [3]4 years ago

6 0

I need more info tooooo

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1 + 5 • 2 + ( 1 + 3)2

Sergeeva-Olga [200]

Answer:

1+5(2)+2(1+3)

1+10+2+6

=19

5 0

3 years ago

Read 2 more answers

Jerry was using matrices to solve the system of three equations. He has shown all his steps. Did he make a mistake if so in what

melomori [17]

There are several ways to solve a system of equation; one of these ways is the use of matrix.

<em>Jerry made a mistake at step 2</em>

From the attachment, the step 1 is represented as:

$\mathbf{\frac 12R_1 \left[\begin{array}{cccc}1&1&1&0\\5&3&-2&-4\\3&2&1&1\end{array}\right] }$

The equation in step 2 is given as:

$\mathbf{R_2 = 5R_1 - R_2}$

This means that:

We subtract the elements of row 2 from the elements of row 1, multiplied by 5

So, we have:

$\mathbf{R_2 = 5\left[\begin{array}{cccc}1&1&1&0\end{array}\right] } - \left[\begin{array}{cccc}5&3&-2&-4\end{array}\right] }$

Expand

$\mathbf{R_2 = \left[\begin{array}{cccc}5&5&5&0\end{array}\right] } - \left[\begin{array}{cccc}5&3&-2&-4\end{array}\right] }$

Subtract corresponding cells

$\mathbf{R_2 = \left[\begin{array}{cccc}0&2&7&4\end{array}\right] }$

So, the new row 2 elements should be:

$\mathbf{ \left[\begin{array}{cccc}0&2&7&4\end{array}\right] }$

However, the row 2 elements of Jerry's steps are:

$\mathbf{R_2 = \left[\begin{array}{cccc}0&-2&-7&-4\end{array}\right] }$

This means that:

Jerry made a mistake; and the mistake is at step 2

Read more about matrix at:

brainly.com/question/21848291

4 0

2 years ago

Read 2 more answers

Steve gets paid $50 a week plus $5 for each item he sells. He wants to know how many items he

Charra [1.4K]

<u>Answer:</u>

$50 + 5x > $220

5x> $220 - $50

7 0

3 years ago

Find the value of x round to the nearest tenth

Leto [7]

Answer:

58.6

Step-by-step explanation:

Use the formula $c=\sqrt{a^{2}+b^{2}$

solving for x (b)

$b=\sqrt{c^{2}-a^{2}$ = $\sqrt{61^{2}-17^{2}$ ≈58.58327

and 58.58327 rounds to 58.6

4 0

3 years ago

Find X and Y and show please show calculations

torisob [31]

Answer:

Y = 90

X = 52

Step-by-step explanation:

Y is on a straight line. The sum of the angles on a straight line is 180.

The only other angle (that is marked) on this straight line, is a 90 degree one. So, <y + 90 = 180.

<y = 90.

Now <x + 38 = 90

so, x = 52

6 0

3 years ago