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3 years ago

HELP ASAP IT'S AN EMERGENCY

Mathematics

1 answer:

vodomira [7]3 years ago

3 0

Answer:

AAS

Step-by-step explanation:

It has two sets of angles that are congruent. I'm no 100% so hope the picture helps you a little!!

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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

c.) The tires of an automobile have a diameter of 22 in. If the wheels revolve 18 times, how many feet does the automobile move?

dalvyx [7]

Answer:

396

Step-by-step explanation:

22 x 18 = 396

Final answer 396.

3 0

3 years ago

Read 2 more answers

A jar of marbles contains 5 blue 12 red, and 8 yellow marbles. what is is probability that you you select a blue marble, keep it

Natali5045456 [20]

Answer:

Step-by-step explanation:

Add the number of marbles together then you but the number of blue ones first 5 to 25 chances

6 0

3 years ago

A surveying team needs to find the distance across a canyon. They decide to locate two point, A and B, on one side of the canyon

balandron [24]

Answer:

B). About 109 meters

6 0

3 years ago

Debra bought a desk on sale for $402. This price was 33% less than the original price. What was the original price?

weqwewe [10]

First, we need to find 33% of $402. (132.66)

Now since it's 33% less than before, we need to add how much the price was reduced by.

402+132.66= 534.66

The original price was $534.66

3 0

3 years ago

HELP ASAP IT'S AN EMERGENCY​

HELP ASAP IT'S AN EMERGENCY