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3 years ago

How do you classify a triangle

1 answer:

5 0

It is based off of the angles of the triangle and the sides.
A triangle with a right angle (90°) is a right triangle.
A triangle with an angle larger than 90° is an obtuse triangle.
A triangle with angles that are smaller than 90° is an acute triangle. ALL ANGLES MUST BE SMALLER THAN 90°...

With sides, if a triangle has two angles that equal the same length, it is an isosceles triangle.
If NO sides are of equal length, it is a scalene triangle.
And if ALL sides are equal, then it is a equilateral triangle.

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When 0.3(4x - 8) - 0.5(2.4x + 4) is simplified what is the resulting expression?

LUCKY_DIMON [66]

0.3(4x-8)-0.5(2.4x+4)
1.2x-2.4-1.2x+2
x-0.4

4 0

3 years ago

Write in terms of i.<br> Simplify your answer as much as possible.<br> -8

Goryan [66]

Answer:

In order to begin figuring that out, we need to know about the equation.

3 0

2 years ago

If c+1/d=5 , what is the value of 30d/2c+2

klemol [59]

Answer:

$d\in R,\hspace{5}d\neq 0$

Step-by-step explanation:

You can solve for any variable. From the first equation, let's solve for c :

$\frac{c+1}{d} =5\\\\c+1=5d\\\\c=5d-1$

Now, replace the value of c into the other equation:

$\frac{30d}{2c+2} \\\\\frac{30d}{2(5d-1)+2} \\$

Using distributive property

$\frac{30d}{10d-2+2} =\frac{30d}{10d} =3$

However, keep in mind that this is true for:

$d\in R,\hspace{5}d\neq 0$

8 0

3 years ago

Sum of series to n terms 0.4+0.44+0.444+....

svetoff [14.1K]

$0.4+0.44+0.444+\cdots=\dfrac4{10}+\dfrac{44}{100}+\dfrac{444}{1000}+\cdots=\displaystyle\sum_{k=1}^\infty\frac{\frac49(10^k-1)}{10^k}=\frac49\sum_{k=1}^\infty\left(1-\frac1{10^k}\right)$

The $n$ th partial sum is given by

$S_n=\displaystyle\frac49\sum_{k=1}^n\left(1-\frac1{10^k}\right)$
$S_n\displaystyle=\frac49\bigg(\left(1-\frac1{10}\right)+\left(1-\frac1{100}\right)+\cdots+\left(1-\frac1{10^{n-1}}\right)+\left(1-\frac1{10^n}\right)\bigg)$
$S_n=\dfrac49\left(n-\dfrac{10^n-1}{9\times10^n}\right)=\dfrac4{81}(9n-1+10^{-n})$

from which it follows that the infinite sum does not converge.

8 0

3 years ago

4x-11=3.2x+13. Write the lesser solution first. Round to the nearest tenth if needed

notsponge [240]

Answer:

The answer is (30, 109)

Step-by-step explanation:

In this problem we need to find the intersection point between the lines

y = 4x-11

and

y = 3.2x+13

We can easily solve this problem by plotting both lines in a graphing calculator and finding the intersection point.

Please see attached picture.

The answer is (30, 109)

8 0

3 years ago