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Mathematics

1 answer:

exis [7]3 years ago

8 0

Answer:

seven nineteen

Step-by-step explanation:

This is because the small hand represents the hour, and it's on 7. So the hour is 7:--. Then the next thing you do is check the big hand, the big hand represents the minutes, the minute hand is just before 20 so it's nineteen. The answer is the big hand 7: + the :19 so this makes 7:19 :D

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An investor buys shares of stock for $24 per share. Three years later the value has increased by 15%. What is the new value of e

kvasek [131]

24 x (1 + 0.15)
= 24 x 1.15
= 27.6

6 0

3 years ago

What is the volume of a sphere with a radius of 7mm

elena-14-01-66 [18.8K]

1) The answer, in terms of "π", is:
_________________________________
"  ( $\frac{1372 mm^3}{3}$ ) * π mm³ " .
___________________________________________________
2) The answer, using "3.14" for "π", is:
___________________________________________________
" 1436.0266666666666667 mm³ " ; round to: " 1436.027 mm³ " ;

or; write as: " 1436 $\frac{2}{75}$ mm³ " .
___________________________________________________
Explanation:
____________________________________________
The formula for the volume, "V" of a sphere is:

V = $\frac{4}{3}$ * π* r³ ;

in which "r" = radius = "7 mm" {given}.

We can solve using "3.14" for "π" ; or we can solve in terms of "π" ;
_________________________________________
1) In terms of "π" :
_________________________________________
V = $\frac{4}{3}$ * π * r³ ;

= $\frac{4}{3}$ * π * (7 mm)³ ;

= $\frac{4}{3}$ * π * (7 * 7 * 7 * mm³) ;

= $\frac{4}{3}$ * π * (49 * 7 * mm³) ;

= $\frac{4}{3}$ * π * (343 mm³) ;

= $\frac{4* 343 mm^3}{3}$ ) * π mm³

= ( $\frac{1372 mm^3}{3}$ ) * π mm³ ;

________________________________________________________
2) Using "3.14" for "π" :
________________________________________________________
    V = $\frac{4}{3}$ * π * r³ ;

= $\frac{4}{3}$ * (3.14)* (7 mm)³ ;

    = $\frac{4}{3}$ * (3.14) * (7 * 7 * 7 * mm³) ;

= $\frac{4}{3}$ * (3.14) * (49 * 7 * mm³) ;

= $\frac{4}{3}$ * (3.14) * (49 * 7 * mm³) ;

= $\frac{4}{3}$ * (3.14) * (343 mm³) ;

= { $\frac{4}{3}$ } * (3.14 * 343 mm³) ;

= { $\frac{4}{3}$ } * (1077.02 mm³) ;

= (4 * 1077.02 mm³) / 3 ;

= (4308.08 mm³) / 3 ;
__________________________________________________________
= 1436.0266666666666667 mm³ ; round to: " 1436.027 mm³ " ;

or; write as: " 1436 $\frac{2}{75}$ mm³ " .
__________________________________________________________

6 0

4 years ago

Y + 4/9 = 2/3 Solve the equation..

emmainna [20.7K]

Y + 4/9 = 2/3

Let's convert 2/3 into 6/9 so it will be easier to subtract.

Y + 4/9 = 6/9
Subtract 4/9 on both sides.

Y = 2/9 Hope this helps!

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What the ratio 9:13 as a fraction?

Airida [17]

The answer is 9/13 as a fraction

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3 years ago