3 years ago

A box of LED light bulbs was tested to see how long the light bulbs last. The standard deviation of the light bulb lifetime

Mathematics

1 answer:

Anna71 [15]3 years ago

5 0

What are all the answers it’s har to see

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What does the fraction 5/6 mean and how can it be written using division?

AnnyKZ [126]

5/6......5 out of 6.......using division, it is 5 divided by 6 = 0.833

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Khan academy use Pythagorean theorem to find isosceles triangle size length

MrMuchimi

Answer:

I know

Step-by-step explanation:

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3 years ago

Convert the mixed number 7 4/7 to a mixed decimal and round the nearest thousand

RideAnS [48]

Using a calculator, you can find out that $\sf{ \frac{4}{7}\approx 0.571428571 \approx.571$

and so that means $\sf{ 7\frac{4}{7}\approx 7.571428571 \approx 7.571$

so your answer is

$\sf{ 7\frac{4}{7} \approx \huge{\boxed{7.571}}$

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3 years ago

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In the diagram, △ABC∼△DEF. The area of △ABC is 180 square centimeters. Find the area of △DEF.

Alexeev081 [22]

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Step-by-step explanation:

The first step is to find out the similarity reason of the sides of the triangle, so we just divide the big side by the small side (12/4=3).

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Then we just divide the area of the big triangle by 9, which is 180/9= 20.

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