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lubasha [3.4K]
3 years ago
14

To all ppl who are good in math, pls answer this I really need ur help...

Mathematics
2 answers:
Alex17521 [72]3 years ago
3 0

Answer:

1 is -4.

4 is a > -44.

3 is x > 1.

2 p is 3

5 is x < 20

6 is -4 < b < 38/7

DENIUS [597]3 years ago
3 0

Answer:

1. m= -4

2. p= 3

3. x is greater than or equal to 1

4. a is greater than or equal to -36

5. x is less than 20

6. b is less than or equal to 38/7 or greater than or equal to -4

Step-by-step explanation:

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nydimaria [60]
Where is the math u are talking about
3 0
3 years ago
Simplify i to the 37th power<br> A-1<br> B- -1<br> C- -i<br> D- i
nika2105 [10]

Answer:

i think D is your answer but i could be wrong

8 0
3 years ago
Suppose brine containing 0.2 kg of salt per liter runs into a tank initially filled with 500 L of water containing 5 kg of salt.
Oliga [24]

Answer:

(a) 0.288 kg/liter

(b) 0.061408 kg/liter

Step-by-step explanation:

(a) The mass of salt entering the tank per minute, x = 0.2 kg/L × 5 L/minute = 1 kg/minute

The mass of salt exiting the tank per minute = 5 × (5 + x)/500

The increase per minute, Δ/dt, in the mass of salt in the tank is given as follows;

Δ/dt = x - 5 × (5 + x)/500

The increase, in mass, Δ, after an increase in time, dt, is therefore;

Δ = (x - 5 × (5 + x)/500)·dt

Integrating with a graphing calculator, with limits 0, 10, gives;

Δ = (99·x - 5)/10

Substituting x = 1 gives

(99 × 1 - 5)/10 = 9.4 kg

The concentration of the salt and water in the tank after 10 minutes = (Initial mass of salt in the tank + Increase in the mass of the salt in the tank)/(Volume of the tank)

∴ The concentration of the salt and water in the tank after 10 minutes =  (5 + 9.4)/500 = (14.4)/500 = 0.288

The concentration of the salt and water in the tank after 10 minutes = 0.288 kg/liter

(b) With the added leak, we now have;

Δ/dt = x - 6 × (14.4 + x)/500

Δ = x - 6 × (14.4 + x)/500·dt

Integrating with a graphing calculator, with limits 0, 20, gives;

Δ = 19.76·x -3.456 = 16.304

Where x = 1

The increase in mass after an increase in = 16.304 kg

The total mass = 16.304 + 14.4 = 30.704 kg

The concentration of the salt in the tank then becomes;

Concentration = 30.704/500 = 0.061408 kg/liter.

6 0
3 years ago
renu is 2 times older than suman. Anita is 9 years older than suman and 6 years younger than renu. jif some of their ages is 69,
SashulF [63]

Answer:

suman is 15 and renu is 30 anita is 24

Step-by-step explanation:

15+30+24+69

3 0
3 years ago
I need help on this question please hurrrrrrryyy
lbvjy [14]

Answer:

0

Step-by-step explanation:

They all seem to be plotted correctly in accordance with the graph

7 0
3 years ago
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