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3 years ago

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Mathematics

1 answer:

Liula [17]3 years ago

3 0

Answer:

18.21 cm^2.

Step-by-step explanation:

Area of the unshaded part

= area of the square - area of the quadrant

= 7^2 - 1/4 pi *7^2

= 49 - 30.788

= 18.21 cm^2.

You might be interested in

Question of the day:

kogti [31]

Answer:

12 days 16 hours 22 minutes 7.5 seconds

Step-by-step explanation:

You are interested in the proportion ...

earth time / heaven time = (1000 years)/(1 day) = (x days)/(3 seconds)

Multiplying by 3 seconds, we find ...

x days = (3 seconds)(1000 years)/(1 day)

If we convert 1000 years to days, then the formula will give us "x days" as a number of seconds.

1000 years is a long enough time period that all of the leap-year rules come into play. So, we will use the average number of days in a year as 365.2425. Then 1000 years is 365,242.5 days, and we get ...

x days = (3 seconds)(354,242.5) = 1,095,727.5 seconds

There are 3600 seconds in 1 hour, so this is ...

x days = (1095727.5 s)/(3600 s/h) = 304.36875 h

The fraction of an hour converts to 22 minutes 7.5 seconds. The 304 hours converts to 12 days 16 hours.

When Gabe starts blowing his horn, we have 12 days 16 hours 22 minutes 7.5 seconds left on Earth.

_____

The number of minutes and seconds will vary, depending on what you consider to be the number of days in a year.

7 0

3 years ago

Please help with 3! i don’t know how to graph it or work it out

saveliy_v [14]

It would be like this , this is how you would graph it

8 0

3 years ago

Chana and Josiah started skating at the same time in the same direction, but Josiah had a head start 10 meters past the starting

harkovskaia [24]

The point that is labeled H on this graph is the point where Chana's and Josiah's distance from the starting line at the time when Chana catches up with Josiah.

<h3>How to solve for the point H.</h3>

At the point H, there is an intersection between the distance covered by both of these individuals.

This point is the point where we are shown that Chana has caught up with Josiah as they are skating.

Read more on direction here:

brainly.com/question/17021383

#SPJ1

3 0

2 years ago

Please help! Will mark brainliest. The answer is 1.96 but I need to know to they got the answer.

nadya68 [22]

Here we are looking to find the critical value Z.

When alpha is 0.05:

0.05/2=.025

Using your z chart this would equal 1.96 positive or negative. Hope this helps!

3 0

3 years ago

Question

KiRa [710]

Step-by-step explanation:

This problem bothers on the density of substances

Given data

Mass of substance m= 16kg

Volume of substance v = 2L

the equation that relates the volume. V. to the mass, m is the expression for density

ρ= mass/volume

Substituting our given data

ρ= 16/2= 8kg/L

Using the density calculated above we can get the volume liters, of 128kg of liquid

8= 128/v

v=128/8

v= 16L

The volume is 16L

The density of a substance is expressed as the mass per unit volume

3 0

3 years ago

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