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dalvyx [7]
3 years ago
13

There are 24 hours in a day and scientists tell us that we should sleep for 3/8 of the day. How much time should we spend sleepi

ng?
Mathematics
2 answers:
blagie [28]3 years ago
8 0
The answer would be 9 hours.
fiasKO [112]3 years ago
5 0
An easy way to do this would be to convert the fraction into a decimal and multiply. You can use a calculator for this. Convert 3/8 into a decimal, which will be 0.375.   Now multiply  24 * 0.375 = 9.   So doctors say you should spend 9 hours sleeping.
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I'll give points and brainalist for answer / explanation
Valentin [98]

Answer:

D. 8

Step-by-step explanation:

C= 2πr

π= 3.14

C= 25.12

25.12 = 2 * 3.14 * r

r= 4

d= 2r

d= 8

5 0
3 years ago
- (x + 2)2 + (y - 9)2 = 1
telo118 [61]

Answer:

x+y=-5.75

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, you would simply need to use the distributive property!

-(2)x-(2)2+(2)y-(2)9=1

-2x-4+2y-18=1

Then you need to add/subtract so the similar numbers are together.

-2x+2y-22=1

-2x+2y=23

x+2y=-11.5

x+y=-5.75

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

Please, please give brainliest, it would be greatly appreciated, I only a few more before I advance, thanks!

8 0
3 years ago
Solve each compound inequality<br><br> 10m &gt; 84
Mazyrski [523]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

let's solve :

  • 10m > 84

  • m >  \dfrac{84}{10}

  • m > 8.4
6 0
3 years ago
Mystery number: The number is less than 190000 and greater than 180000.
Kipish [7]
The answer to it is    
180, 000 <n> 190, 000 
180,000 + 2000 = n = 5000-187, 000 
182,000 = n = 182, 000   
Or,  
 180, 000 <n> 190,000                     
 n + 5000= 187, 000                           n – 2000 = 180, 000 
 n= 187, 000- 5000                             n = 180, 000 + 2000 
 n= 182, 000                                       n= 182, 000 
6 0
3 years ago
Solve for x.<br><br> −32&gt;−5+9x<br><br><br><br> Enter your answer, as an inequality, in the box.
Elan Coil [88]
+5 to both sides
9x<-27
divide both sides by 9
x<-3

4 0
3 years ago
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