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2 years ago

Classify the following triangle. Check all that apply.

Mathematics

2 answers:

soldier1979 [14.2K]2 years ago

8 0

1.Acute because all the sides are less than 90 degrees
2.Scalene because no sides are in equal length

Kisachek [45]2 years ago

4 0

I think the answer is A B E

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A meal coats $16.64. What's the total cost with a 15% tip?

kotegsom [21]

Answer:

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Step-by-step explanation:

if 100% ----> $16.64

then 115% ----> $19.136

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1 year ago

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1 year ago

What is the discriminant of the quadratic equation 0 = –x2 4x – 2? a.–4 b.8 c.12 d.24

MrMuchimi

X^2 - 4x + 2
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yanalaym [24]

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2 years ago

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Solve the following system by any method -8x-8y=0 -8x+2y=-20

iVinArrow [24]

$\fbox{Solution by using Matrix}$

$\text{Linear Equation} = -8x-8y=0 , -8x+2y=-20$

$\text{Rewrite the linear equations above as a matrix}$

$\left[\begin{array}{ccc}8&-8&0\\-8&2&-20\\\end{array}\right]$

$\text{Apply to Row2 : Row2 + Row1}$

$\left[\begin{array}{ccc}8&-8&0\\-8&-6&-20\\\end{array}\right]$

$\text{ Simplify rows}$

$\left[\begin{array}{ccc}8&-8&0\\0&1&10/3\\\end{array}\right]$

$\text{Note: The matrix is now in echelon form.}$ $\text{The steps below are for back substitution.}$

$\text{Apply to Row1 : Row1 + 8 Row2}$

$\left[\begin{array}{ccc}8&0&80/30\\0&1&10/3\\\end{array}\right]$

$\text{ Simplify rows}$

$\left[\begin{array}{ccc}1&0&10/3\\0&1&10/3\\\end{array}\right]$

$\text{Therefore, the solution is}$

$x= \dfrac{10}{3} \ \text{and} \ \ y=\dfrac{10}{3}$

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2 years ago