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3 years ago

State if the two triangles are congruent. If they are, state how you know.

Mathematics

2 answers:

Keith_Richards [23]3 years ago

8 0

SAS, the second triangle is flipped over the x axis, then y, and are congruent.

lukranit [14]3 years ago

7 0

Yes they are congruent because they have the same size angle and have the same parallel sides

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PLEASE HELPP!!!

Andrew [12]

Answer:

It would look like this basically..

Step-by-step explanation:

If a function, f(x) is shifted to the left four units, the

function that represents the transformation would be f(x+4). Adding it would make it go right..

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4 0

4 years ago

What is 89-99•99-102

kicyunya [14]

Greetings!

Follow PEDMAS:
Parenthesis
Exponents
Division/Multiplication
Addition/Subtraction

$89-99*99-102$
Multiply 99*99.
$89-9801-102$
Subtract from Left to Right.
$-9712-102$
The Answer Is:
$-9814$

Hope this helps.
-Benjamin

4 0

3 years ago

Read 2 more answers

Rationalise the denominator <br>

Margaret [11]

Step-by-step explanation:

1. $\frac{2 \sqrt{3} }{ \sqrt{5} }$

multiply

$\sqrt{5}$

do both the numerator and denominater

$\frac{2 \sqrt{3} }{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } = \frac{2 \sqrt{15} }{ \sqrt{25} } = \frac{2 \sqrt{15} }{5}$

8 0

3 years ago

A regular square pyramid has base edge b, height h, and slant height l. Three expressions give the surface area, A, of this pyra

S_A_V [24]

Answer:

1/3 . Abase . height

Step-by-step explanation:

Please find attached the complete question

a square pyramid is a pyramid that has a square base.

total surface area measures the total area of the surfaces of an object

the formula 1/3 x Area of the base x height is used to calculate the volume of the pyramid and not the surface area

7 0

3 years ago

The value of the coefficient of correlation ( r) a. can never be equal to the value of the coefficient of determination (r2). b.

gulaghasi [49]

Answer:

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

Step-by-step explanation:

We need to remember that the correlation coefficient is a measure to analyze the goodness of fit for a model and is given by:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The determination coefficient is given by $R= r^2$

Let's analyze one by one the possible options:

a. can never be equal to the value of the coefficient of determination (r2).

False if r = 1 then $r^2 = 1$

b. is always larger than the value of the coefficient of determination (r2).

False not always if r= 1 we have that $r^2 =1$ and we don't satisfy the condition

c. is always smaller than the value of the coefficient of determination (r2).

False again if r =1 then we have $r^2 = 1$ and we don't satisfy the condition

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

7 0

3 years ago