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krok68 [10]
3 years ago
7

- 1/7 divided by 1/10

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

Answer:

-10/7

Step-by-step explanation:

(-1/7)/(1/10)

(-1/7)(10/1)

-10/7

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Eugene wants to buy jeans at a store that is giving $10 off everything. The tag on the
lorasvet [3.4K]

Answer: a= $24.99

              b= $39.98

I hope this helps

Step-by-step explanation:

6 0
2 years ago
Water is leaking out of an inverted conical tank at a rate of 6800 cubic centimeters per min at the same time that water is bein
ivanzaharov [21]

Answer:

1508527.582 cm³/min

Step-by-step explanation:

The net rate of flow dV/dt = flow rate in - flow rate out

Let flow rate in = k. Since flow rate out = 6800 cm³/min,

dV/dt = k - 6800

Now, the volume of a cone V = πr²h/3 where r = radius of cone and h = height of cone

dV/dt = d(πr²h/3)/dt = (πr²dh/dt)/3 + 2πrhdr/dt (since dr/dt is not given we assume it is zero)

So, dV/dt = (πr²dh/dt)/3

Let h = height of tank = 12 m, r = radius of tank = diameter/2 = 3/2 = 1.5 m, h' = height when water level is rising at a rate of 21 cm/min = 3.5 m and r' = radius when water level is rising at a rate of 21 cm/min

Now, by similar triangles, h/r = h'/r'

r' = h'r/h = 3.5 m × 1.5 m/12 m = 5.25 m²/12 m = 2.625 m = 262.5 cm

Since the rate at which the water level is rising is dh/dt = 21 cm/min, and the radius at that point is r' = 262.5 cm.

The net rate of increase of water is dV/dt = (πr'²dh/dt)/3

dV/dt = (π(262.5 cm)² × 21 cm/min)/3

dV/dt = (π(68906.25 cm²) × 21 cm/min)/3

dV/dt = 1447031.25π/3 cm³

dV/dt = 4545982.745/3 cm³

dV/dt = 1515327.582 cm³/min

Since dV/dt = k - 6800 cm³/min

k = dV/dt - 6800 cm³/min

k = 1515327.582 cm³/min - 6800 cm³/min

k = 1508527.582 cm³/min

So, the rate at which water is pumped in is 1508527.582 cm³/min

5 0
3 years ago
Out of 5,400 raffle tickets sold at the carnival, 180 are winners.
IgorC [24]
I think that it is 270. 5400/180 = 30 8100/30 = 270
7 0
3 years ago
Read 2 more answers
What is the answer to ((1+3+6+9)-10)
Daniel [21]

Hey there! :)

((1 + 3 + 6 + 9)) - 10)

Start in the first set of parenthesis.

(19) - 10)

Simplify!

9

Our answer is 9 - hope I helped! :)

6 0
3 years ago
Evaluate 5x + (-2x 2) for x = 3.<br><br> a. 21<br> b. -3<br> c. 11
Vladimir79 [104]

Answer:

C. 11

Step-by-step explanation:

Assuming the problem is 5x + (-2 * 2) with x equals 3.

5(3)+(-2*2)

15+(-4)=

15-4=11

5 0
3 years ago
Read 2 more answers
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