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3 years ago

Needing help on 1.8.5 journal rural wireless internet.

1 answer:

3 0

$8333.33 for future reference make sure to add for information. I just recently did this one, so I knew but all you do is put it in the equation

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Alonzo cut away 1.09 meters of rope. Before that, he had 3 meters of rope. How much rope does Alonzo have left?

blondinia [14]

1.91 meters of rope left
Hope that helps you

4 0

3 years ago

Find the perimeter of the rectangle.

algol13

All you have to do is find the length of the sides using the distance formula and then add the lengths together to find the perimeter

8 0

3 years ago

Apply Crammer's Rule to find the solution to the following quations .2x + 3y = 1, 3x + y = 5

Bond [772]

Answer:

The solution to the equation system given is:

<u>x = 2</u>
<u>y = -1</u>

Step-by-step explanation:

First, we must know the equations given:

2x + 3y = 1
3x + y = 5

Following Crammer's Rule, we have the matrix form:

$\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] =\left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}1\\5\end{array}\right]$

Now we solve using the determinants:

$x=\frac{\left[\begin{array}{ccc}1&3\\5&1\end{array}\right]}{\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] } =\frac{(1*1)-(5*3)}{(2*1)-(3*3)} = \frac{1-15}{2-9} =\frac{-14}{-7} = 2$

$y=\frac{\left[\begin{array}{ccc}2&1\\3&5\end{array}\right]}{\left[\begin{array}{ccc}2&3\\3&1\end{array}\right] } =\frac{(2*5)-(3*1)}{(2*1)-(3*3)}=\frac{10-3}{2-9} =\frac{7}{-7}=-1$

Now, we can find the answer which is x= 2 and y= -1, we can replace these values in the equation to confirm the results are right, with the first equation:

2x + 3y = 1
2(2) + 3(-1)= 1
4 - 3 = 1
1 = 1

And, with the second equation:

3x + y = 5
3(2) + (-1) = 5
6 - 1 = 5
5 = 5

4 0

3 years ago

What’s the correct answer for this question?

Naya [18.7K]

Answer:

16.23

Step-by-step explanation:

Use cosine to solve.

cos = adjacent / hypotenuse

cos 52 = 10 / x

(x = AB)

(cos 52)(x) = 10

x = 10 / (cos52)

x = 10 / 0.616

x = 16.2338

AB = 16.23

6 0

3 years ago

Can someone please help me :)

Svetach [21]

Answer:

Step-by-step explanation:

These pairs are both interior angles and are consecutive because they are divided by a transversal.

6 0

4 years ago

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