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Mila [183]
3 years ago
15

You and classmate have volunteered to contact everyembervof your class by phone to inform them of an upcoming event you can comp

lete the calls in 6 days od you woek alonw id u work togehwr you can complwte the calls in 2.4 days how long would it takw your classmate to make call alon
Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
7 0

Answer:

what

Step-by-step explanation:

did you have a stroke?

BigorU [14]3 years ago
5 0
Here’s you answer mate

Answer:
2.4 days

Explanation:
Use the equation
Work done = rate x time
If you can complete the calls in 6 days, then your rate is N/6 calls per day.
By similar reasoning, your classmate has a rate of N/4 calls per day. Working together , we can write:
Combined rate x time = total calls
(N/6 + N/4) t = N
Nt/6 + Nt/4 = N
Multiply both sides by 24/N:
4t + 6t = 24
10t = 24
t = 2.4 } 2.4 days
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Fudgin [204]
You may want to use desmos for all of these kind of questions

8 0
3 years ago
Need some help with this one!!!
muminat

Answer:

210

Step-by-step explanation:

2 x 3 x 5 x 7 = 210

4 0
3 years ago
Solve 6|y| + 6 = 4<br>answers:<br>0<br>{-6,4}<br>{-4,4}<br>{0}​
lesya [120]

Answer:

the real answer is -1/3

Step-by-step explanation:

6lyl +6=4 subtract 6 from both sides

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5 0
3 years ago
Solve<br> Help mee please
lesantik [10]

1/2 Square equals to 1/4 equals to x over 5 2 Square

therefore 1/4 equals to x over 5 2 square

Equals to 1/4 equals to x over 5 * 4 you know that 2 square equals to 4

So now I'm going to solve for 1/4 equals to x of over 5 * 4 equals to 20

1/4 equals to x over 20

1/4 equals to 20 cross multiply

= 1\4 = x/20

= 4 * x = 20*1

4x = 20

divide both side by the coefficient of x

4x/4 = 20/4

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3 0
3 years ago
how many liters of a 40% acid solution must be added to 12 liters of a 20% solution to obtain a 25% solution​
kkurt [141]

Answer:

The answer is 4 liters.

Step-by-step explanation:

We want a final 25% solution, which means that the solvent should constitute 25 percent of all the liters of solution.

Let us call x the litres of 40% solution, so when they are added to the 12 litres of 20% solution, the total litres of the new solution are:

x+12

of these liters, 25% must be the solvent:

N=0.25(x+12)

Now for the 40% solution, the liters of the solvent are 0.4x, and for the 20% liter solution, the liters of solve are 0.2*12=2.4 liters. Thus the total liters N of the solvent are

N=0.4x+2.4

Therefore

N=0.4x+2.4=0.25(x+12)

\therefore x=4\:litres

6 0
3 years ago
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