Classify the following triangle. Check all that apply.

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

6 0

Answer:

isosceles, obtuse

Step-by-step explanation:

2 sides are congruent making it an isosceles triangle.

1 angle is obtuse making it an obtuse triangle.

siniylev [52]3 years ago

4 0

Answer:

obtuse and isosceles

Step-by-step explanation:

obtuse - one of its angles are bigger than 90°

isosceles- the 2 marks show that 2 sides are congruent to one another

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4 years ago

Read 2 more answers

Need help with this

JulsSmile [24]

First, change the measurements of the pole to m so all of the units are the same.
41 cm=.41 m
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6 0

3 years ago

Find S15 for the geometric series 72 + 12 + 2 + +…

Sedbober [7]

$S_{15}=72+12+\cdots+\dfrac1{181398528}+\dfrac1{1088391168}$
$S_{15}=72\left(\dfrac16\right)^0+72\left(\dfrac16\right)^1+\cdots+72\left(\dfrac16\right)^{13}+72\left(\dfrac16\right)^{14}$
$S_{15}=72\displaystyle\sum_{i=1}^{15}\left(\frac16\right)^{i-1}$

$\dfrac16S_{15}=72\displaystyle\sum_{i=1}^{15}\left(\frac16\right)^i$

$\implies S_{15}-\dfrac16S_{15}=72\displaystyle\sum_{i=1}^{15}\bigg(\left(\dfrac16\right)^{i-1}-\left(\dfrac16\right)^i\bigg)$
$\dfrac56S_{15}=72\bigg(\left(1-\dfrac16\right)+\left(\dfrac16-\dfrac1{6^2}\right)+\cdots+\left(\dfrac1{6^{13}}-\dfrac1{6^{14}}\right)+\left(\dfrac1{6^{14}}-\dfrac1{6^{15}}\right)\bigg)$
$\dfrac56S_{15}=72\left(1-\dfrac1{6^{15}}\right)$
$S_{15}=\dfrac{432}5\times\dfrac{6^{15}-1}{6^{15}}=86.4$