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elena-14-01-66 [18.8K]
2 years ago
14

(5a+15b) e divizibil cu 5 va rogg e urgent

Mathematics
1 answer:
34kurt2 years ago
4 0

Answer:

<h2>a + 3b</h2>

Step-by-step explanation:

\frac{5a + 15b}{5 }

\frac{5a}{5}  + \frac{15b}{5}

a + 3b

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Find f'(x) if f(x)=3squareroot(x+2)<br>using the definition of the derivative!
ycow [4]
I hope this helps you



f (x)=(x+2)^3/2


f'(x)=3/2. (x+2)^3/2-1


f'(x)=3/2 (x+2)^1/2


f'(x)=3/2.square root of (x+2)
4 0
3 years ago
A chemist wants to mix a solution of 20% chlorine with a solution of 60% chlorine to make 120 liters of 30% solution of chlorine
Mama L [17]

Answer:

90 and 30 liters

Step-by-step explanation:

1) if solution of 20% is 'x' and of 60% is 'y' liters, then

2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and

3) the mix of the two solutions is 120=x+y.

4) using these items it is possible to make up the system of two equations:

\left \{ {{x+y=120} \atop {0.2x+0.6y=0.3(x+y)}} \right.

5) finally, x=90 liters of 20%; y=30 liters of 60% solution.

8 0
2 years ago
Plz help me <br> I don’t know how to do<br> Number 1 and 2
Rainbow [258]
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6 0
3 years ago
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Contact [7]

Answer:

MAYA (6 minutes)

Amy (7 minutes)

Step-by-step explanation:

MAYA

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It becomes:

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x = 30/5

x = 6mins.

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Takes Amy 28 mins to solve 4 puzzles.

Let's represent it as:

28 mins = 4 Puzzles

x min = 1 puzzle

Let's solve for x

(28 mins) * (1 puzzle) = 4 * x

28 = 4x

x = 28/4

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3 years ago
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Answer:

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Step-by-step explanation:

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