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3 years ago

! Angle Measurement of Polygons ! ~Help my brainless self-~

Mathematics

1 answer:

zloy xaker [14]3 years ago

6 0

Answer:

b) 123

Step-by-step explanation:

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I need some help please What's |5| + |–7|?

luda_lava [24]

Answer:

<h3>hello there!</h3>

$\left|5\right|+\left|-7\right|$

$rule =a,\:a\ge 0$

$|5|=5$

$\mathrm{Apply\:absolute\:rule}:\quad \left|-a\right|=a$

$\left|-7\right|=7$

$5+7=$

$12$

hope this helps you..

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3 years ago

Hiromi is painting the front and back of a barn. Each can of paint covers 32 square feet. How many cans of paint does Hiromi nee

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I need more information about the dimensions of the barn

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3 years ago

Marco read that a honeybee fly up to 2.548 meters per second.He rounded the number to 2.55 to which place value did marco round

Kazeer [188]

He rounded to the hundredth.

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4 years ago

A new test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A med

Troyanec [42]

The tree diagram of the problem above is attached
There are four outcomes of the two events,

First test - Cancer, Second Test - Cancer, the probability is 0.0396
First test - Cancer, Second Test - No Cancer, the probability is 0.0004
First test - No Cancer, Second Test - There is cancer, the probability is 0.0096
First test - No cancer, Second Test - No cancer, the probability is 0.9054

The probability of someone picked at random has cancer given that test result indicates cancer is $\frac{0.0396}{0.0396+0.0096}= \frac{33}{41}$

The probability of someone picked at random has cancer given that test result indicates no cancer is $\frac{0.0396}{0.0004+0.9504} = \frac{99}{2377}$

7 0

3 years ago

Nandini makes 'halwa' one evening and divides it into four equal portions for her family of four. However, just as they are abou

wel

Answer:

Step-by-step explanation:

Total 'halwa' made = 1

Divided into four equal portion = 1/4

Arrival of an unexpected guest = 1/5

By what percentage has each family member's share been reduced:

Change in the sharing proportion:

Previous share ratio - new sharing ratio

(1/4 - 1/5) = (5 - 4) / 20 = 1/20

That means total reduction in the sharing = 1/ 20

Since each member comes contributed equally:

Reduction in each family member's share ;

(1 / 20) ÷ 4

(1 / 20) * 1/4 = 1/ 80

Percentage reduction:

(Reduction / original share) * 100%

[(1/80) ÷ (1/4)] * 100

(1/80 * 4/1) * 100%

(1/20) * 100%

= 5%

Reduction in each family members share = 5%

3 0

3 years ago