3 years ago

An equation that states two ratios are equivalent

Mathematics

1 answer:

Goshia [24]3 years ago

7 0

An equation that states two ratios are equivalent is called a Proportion

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Please help, marking brainliest if correct

bezimeni [28]

Answer:

Step-by-step explanation:

2x+x+4=115 (ext ∠)

3x=111

x=37

∠MNO=2(37)

=74°

8 0

3 years ago

Read 2 more answers

SIERENCE

Svetllana [295]

B for sure because yes

8 0

3 years ago

If A is nonsingular, then (AT )-1 =(A-1) T . (a) Verify this theorem for 2 × 2 matrices

kipiarov [429]

Answer:

Verified

Step-by-step explanation:

Let the 2x2 matrix A be in the form of:

$\left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

Where det(A) = ad - bc # 0 so A is nonsingular:

Then the transposed version of A is

$A^T = \left[\begin{array}{cc}a&c\\b&d\end{array}\right]$

Then the inverted version of transposed A is

$(A^T)^{-1} = \frac{1}{ad - cb} \left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]$

The inverted version of A is:

$A^{-1} = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-b\\-c&d\end{array}\right]$

The transposed version of inverted A is:

$(A^{-1})^T = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]$

We can see that

$(A^T)^{-1} = (A^{-1})^T$

So this theorem is true for 2 x 2 matrices

3 0

3 years ago

HELP PLEASE PLEASE PLEASE

CaHeK987 [17]

Answer:

If you beg for help like that you won't get any.

Step-by-step explanation:

6 0

3 years ago

Danielle's text messaging plan charges 5cents for each message over 600 in addition to a $13 base charge if she owes $19.70 for

dlinn [17]

19.70-13=6.7
6.7/0.05=134
600+134=734
So in April she sent 734 text messages

8 0

3 years ago