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3 years ago

SUPER EASY PROBLEM! IF YOU ANSWER CORRECTLY, YOU GET 30 POINTS + BRAINLY!!!!!!!!

Mathematics

2 answers:

RoseWind [281]3 years ago

5 0

A heptagon's sum of all interior angles is 900°. So one angle can be 128.6°.

Hope this helps :)

Tpy6a [65]3 years ago

4 0

TWENTY ONE !!!!!!!!!!!!!!!!!!

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What are the coordinates of the midpoint of the line segment with end points J (-6, 3) and K (4, -2)

iVinArrow [24]

Answer:

(-1 , 1.5)

Step-by-step explanation:

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3 years ago

Solve: 21.00 - 3.46<br> Pls help

Yakvenalex [24]

Answer:

I'm sorry I don't know how to explain on here, but the answer is 17.54.

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3 years ago

The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing

tester [92]

The length of pendulum is 2.485 feet

<h3><u><em>Solution:</em></u></h3>

Given that,

The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing back and forth

<u><em>Therefore, the given formula is:</em></u>

$T=2\pi \sqrt{\frac{L}{32} }$

We have to find the length of pendulum that makes one full swing in 1.75 seconds

So the modify the given equation to find "L"

$T=2\pi \sqrt{\frac{L}{32} }\\\\ \sqrt{\frac{L}{32} }=\frac{T}{2 \pi}\\\\\text{Taking square root on both sides }\\\\\frac{L}{32} = \frac{T^2}{4 \pi^2}\\\\L = \frac{T^2}{4 \pi^2} \times 32\\\\L = \frac{T^2}{\pi^2 } \times 8$

Substitute T = 1.75 seconds and $\pi = 3.14$

$L = \frac{1.75^2}{3.14 \times 3.14} \times 8\\\\L = \frac{3.0625}{9.8596} \times 8\\\\L = 2.485$

Thus length of pendulum is 2.485 feet approximately

7 0

4 years ago

What is the equation of the line that passes through (1, 2) and is parallel to the line whose equation is 2x + y - 1=0?

elixir [45]

Answer:

y=-2x+4

Step-by-step explanation:

2x+y-1=0

2x+y=0+1

2x+y=1

y=1-2x

y=-2x+1

y=mx+b where m=slope and b=y-intercept

parallel means same slope,

so the slope would still be -2.

--------------

y-y1=m(x-x1)

y-2=-2(x-1)

y=-2x+2+2

y=-2x+4

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3 years ago

How many fourthsare there in 1 7/16

vazorg [7]

There are 5 in 1 7/16

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3 years ago