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svetoff [14.1K]
3 years ago
10

A container contains water at temperature 80 degree celcius. After every 10 minutes, the change in temperature is - 4 degree cel

sius. After how much time will the temperature of the water be 20 degree celcius ?
Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0
2 hours and 30 minutes
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1 1/4 subtracted from its reciprocal is :<br> A -9/20. B - 1/20. C 1/5. D - 1/5
dalvyx [7]

Answer:

Step-by-step explanation:

first we turn ur mixed number into an improper fraction

1 1/4 = 5/4

the reciprocal of 5/4 can be found by just flipping it....so the reciprocal is gonna be 4/5

so 1 1/4 subtracted from its reciprocal is :

4/5 - 5/4 =

16/20 - 25/20 =

- 9/20 <====

7 0
3 years ago
Read 2 more answers
Got half not sure of the rest through​
bezimeni [28]

Answer:

-1/12

Step-by-step explanation:

make the denominators congruent

8/12 and 9/12

then subtract

-1/12

6 0
2 years ago
PLEASE HELP ASAP! WILL GIVE BRAINLEIST!<br> Find the area of the shaded region. Use pi = 3.14
Semmy [17]

Answer:

Step-by-step explanation:

Square

The side length of the square = 8 cm

The area of the square = s^2

The area of the square = 8^2 = 64

Circle

r = d/2

r = 8/2

r = 4

Area of the circle = pi r^2

Area of the circle = 3.14 * 16

Area of the circle = 50.24

Shaded Area

Area of the Shaded area = area Square - Area Circle

                                          = 64 - 40.24

                                          = 23.76

4 0
3 years ago
Simplify the expression 4 + 23−|−4| <br> A.16 B.4 C.8 D.12
Artyom0805 [142]

Answer: =23

Step-by-step explanation:

4+23-\left|-4\right|

=4+23-4

=23

7 0
2 years ago
Three times the difference between eighteen and thirteen
olchik [2.2K]
3*(18-13)
3* 5
15

The answer is 15
8 0
3 years ago
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