Question

A scientist records a temperature of 234.566°C in an experiment. The temperature then falls 48.01°C. What was the temperature after it fell?

Give your answer with the appropriate precision.


A.
186.556°C

B.
186.56°C

C.
186.557°C

D.
186.57°C

Answer 1

transform them to fractions, then take the difference and rewrite the fraction in decimals.

Answer 2

@ash2326

Answer 3

can u help me

Answer 4

Suppose I have 100 fruits, and 25 falls from my hand. How many will remain with me?

Answer 5

75 fruits

Answer 6

@kathy0514 A scientist records a temperature of 234.566°C in an experiment. The temperature then falls 48.01°C.
now do the same here.

Answer 7

forget about the fractions, just do this:
we know that to find the difference of anything we substract the initial value from the final value.
so applying that to the problem, we can form an ecuation:
\[T _{f}-T _{o}=dT\]
it'll look like this:
\[T _{f}-234.566=48.01\]
so, all you have to do is solve that ~

Answer 8

186.556

Answer 9

good kathy :P

Answer 10

whoops, spinf that hehe...

Answer 11

so it would be A

Answer 12

yes x3.

Answer 13

yes, good :)

Answer 14

thank u @ash2326

U were the best and still r!
C:

Answer 15

thanks :P

Answer 16

can u help me on a other

Answer 17

Patrice buys 15.70 gallons of gas for $2.799 per gallon.

How much does Patrice pay for gas?

Give your answer with the appropriate precision.

A.
$43.90

B.
$43.94

C.
$43.95

D.
$44.00

Answer 18

Same ideology as the fruits.
If you have 6 cages with 5 fruits in them. how many fruits would you end up with?

Answer 19

I tried to do the same thing that u told me but I got
4.369

Answer 20

43.69

Answer 21

@ash2326

Answer 22

All you have to do is multiply:
what is:
\[15.70\times2.799= ?\]

Answer 23

if you aprox the value, then you'll be having what in science is called "error range"

Answer 24

43.9443

Answer 25

@ash2326

Answer 26

Good, now take the significant values, we only need 2 decimals.
meaning that we'll only consider the 43.94.

Answer 27

so its b

Answer 28

@Owlcoffee

Answer 29

A rancher has 120 m of fence to enclose a pen with sides of length 27.3 m, 22.4 m, 32.6 m, and 31.7 m.

How much fencing will be left over after he encloses the pen?

A.
6 m

B.
6.1 m

C.
6.9 m

D.
10 m

Answer 30

last 1

Answer 31

okay, first we have to add up the sides.
\[27.3+22.4+32.6+31.7\]
how much is that?

Answer 32

114

Answer 33

thats how much it =

Answer 34

very good!
Now, to 150 substract that quantity.

Answer 35

Sorry, 120-114=?

Answer 36

6

Answer 37

Good!, so the right answer is A :)

Answer 38

ok thanx