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Vladimir [108]
2 years ago
9

Ms. Ganther swam 500 meters in a race, how many kilometers did she swim?

Mathematics
2 answers:
DanielleElmas [232]2 years ago
8 0

Answer:

0.5

Step-by-step explanation:

you just move the decimal three times over to the left

kirill [66]2 years ago
6 0

To convert metre unit to kilometres, divide it by 1000.

∴ Mr Ganther covered = 500/1000 km = 0.5 km.

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Annually:    Total Amount= $1,611.76   Interest Amount= $711.76

Semiannually: Total Amount= $1,625.50  Interest Amount= $725.50

Quarterly:  Total Amount= $1,632.62   Interest Amount= $732.62

7 0
3 years ago
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A rectangular tank that is 2048 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes
ira [324]

Answer:

The box should have base 16ft by 16ft and height 8ft Therefore,dimensions are 16 ft by 16 ft by 8 ft

Step-by-step explanation:

We were given the volume of the tank as, 2048 cubic feet.

Form minimum weight, the surface area must be minimum.

Let the height be h and the lengths be x

the volume will be: V=x²h then substitute the value of volume, we have

2048=hx²

hence

h=2048/x²

Since the amount of material used is directly proportional to the surface area, then the material needs to be minimized by minimizing the surface area.

The surface area of the box described is

A=x²+4xh

Then substitute h into the Area equation we have

A= x² + 4x(2048/x²)

A= x² + 8192/x

We want to minimize

A

dA/dx = -8192/x² + 2 x= 0 for max or min

when dA/dx=0

dA/dx= 2x-8192/x²=0

2x=8192/x²

Hence

2x³=8192

x³=4096

x=₃√(4096)

X=16ft

Then h=2048/x²

h=2048/16²

h=8ft

The box should have base 16ft by 16ft and height 8ft

Hence the dimensions are 16 ft by 16 ft by 8 ft

8 0
2 years ago
Search results for There were 35 bunches of roses and tulips. Each brunch at 12 of the same flowers. There were seven more bunch
KIM [24]
If it is supposed to say <span>seven more bunches of tulips than roses,  that would mean, if there are 35 bunches in all, and if each bunch had 12 of the same flowers.... that must mean each bunch had 12 flowers so, 12*1/2/35.  35/1/2 would be 35/0.5 that would equal... 17.5. so, 12*17.5= 210. if there was seven more added, than, 7/2= 3.5 and 12*3.5= 42. 210+42=252.

That means there are 252 tulips, i might be wrong (i probably am), i am just going by logic, lol
</span>
3 0
3 years ago
If a woman making $45 an hour gets a 10% eaise how much additional money is she making.
zysi [14]
If a woman making $45 an hour gets a 10% eaise how much additional money is she making.


$4.5

45 x .1 = 4.5









4 0
3 years ago
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that
timama [110]

Answer:

Step-by-step explanation:

Given that evolution theory hypothesizes that people should spontaneously follow a​ 24-hour cycle of sleeping and wakingdash–even if they are not exposed to the usual pattern of sunlight.

Sample size n = 8

df = 8- 1=7

Since population std deviation is not known, and sample size is small we can use only t test

H-0: x bar = 24\\H_a: x bar \neq 24

(two tailed test at 5% level of significance)

24

28

24

22

25

26

26

25

 

mean 25

 

sd 3.142857143

 

se 1.111167799

Test statistic = Mean diff/se = 1.595

p = 0.1546

since p >0.05, accept null hypothesis.

There is no evidence to prove that the steady cycle is different from 24 hours.

4 0
3 years ago
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