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loris [4]
2 years ago
8

A hollow circular cone, radius of base 75mm and height 250mm is held vertex down with axis vertical. It contains water which is

leaking away through a small hole in the vertex at the rate of 900mm³s-¹, find the rate at which the water level is falling when it is 100mm above the vertex.​
Mathematics
1 answer:
Norma-Jean [14]2 years ago
8 0

Answer:

the answer is yes

\rm \: bcoz \: if \: you \: subtract \: 250mm \: to \: 900mm ^{3} s -  ^{1}  \: the \: answer \: is \: 100mm \: which \: is \: the \: vertex.

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A necklace and earrings cost $144. Six necklaces and five pairs of earrings cost $825
hram777 [196]

Step-by-step explanation:

let necklace : x

let earrings : y

x+y=144 -1st eqn

6x+5y=825 -2nd eqn

y=144-X -3rd eqn

substitute eqn into 2nd eqn

6x+5(144-x)= 825

6x +720-5X =825 (expanded)

X = 825-720

X =105

substitute "X=105" into 1st eqn

(105)+y=144

y= 144-105

y=39

1 necklace = 105$

1 pair of earrings = 39$

(to check back: substitute the value into the original eqn)

6 0
2 years ago
How many solutions are<br> there to this system of<br> equations?<br> y = 2x - 1<br> y = 2x + 1
Pavlova-9 [17]

Answer:

They are 5 I think

Step-by-step explanation:

It should be correct

3 0
3 years ago
Over What Interval is The Function In This Graph Increasing?
irina1246 [14]

The correct answer is option D.which is -4 ≤ x ≤ 1.

<h3>What is a graph?</h3>

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

in the graph, we can see that the value of x is increasing from -4 coordinate of x to the 1 coordinate of x so the interval will be given as -4 ≤ x ≤ 1.

Therefore the correct answer is option D.which is -4 ≤ x ≤ 1.

To know more about graphs follow

brainly.com/question/25020119

#SPJ1

8 0
1 year ago
Players on a softball team are randomly given a uniform with a two-digit number on the back. The numbers range from 10 to 99. Wh
Minchanka [31]

Answer:

1/10 or 10%

Step-by-step explanation:

99 possible numbers starting from 10

1,2,3,4,5,6,7,8,9 does not count

99-9=90

90 numbers total

possible numbers with a 0: 9

9/90 = 1/10 = 10%

7 0
3 years ago
What are the missing blanks?
Ksenya-84 [330]

Answer:

1 - 3 (1 quarter is 25 and a dime is 10, so, 3.)

4 - 10

6 - 15

14 - 33

Step-by-step explanation:

7 0
3 years ago
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