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4 years ago

Please answer the question in the picture no work needed thanks.

Mathematics

2 answers:

notka56 [123]4 years ago

6 0

Answer:

Answer is A.

Step-by-step explanation:

AC=CB

<ACD=<BCD

DC=DC

nikitadnepr [17]4 years ago

6 0

Answer:

Step-by-step explanation:

Because the traingles are congruent by SAS because Ac=Cb, both angles are 90° and Cd is the sane side in both traingles.

so in conclusion they are congruent traingles and CPCTC says that the other corresponding parts are congruent meaning that DA=DB

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4 years ago

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Levart [38]

Answer:

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Step-by-step explanation:

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4 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:

x = 2
y = -1

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
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And, with the second equation:

3x + y = 5
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6 - 1 = 5
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3 years ago

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Ray Of Light [21]

Answer:

Step-by-step explanation:

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3 years ago

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Murrr4er [49]

F(x) = 4x + 0.95

Hope this helps!!

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3 years ago