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4 years ago

If a given solution has a 10 percent solute concentration, and more solvent is added, the new solute concentration could be:

Mathematics

2 answers:

Gnoma [55]4 years ago

5 0

Five percent is your answer.

stepan [7]4 years ago

3 0

I think the answer is 5% because is you add solvent to a solute, the percentage of solute will be lower

But i'm not sure

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During the Labor Day weekend, Amy and Kathleen each ran in a race. Amy ran in a 5K and completed it in 31 minutes and 15 seconds

Novosadov [1.4K]

Velocity=distance/time

a=5/(31*60+15)=5/1875=1/375

k=21.1/(2*3600+11*60+52.5)=21.1/7912.5=1/375

a=k

The both ran at the same speed.

(1km/375s)(3600s/h)=9.6km/h

4 0

3 years ago

Read 2 more answers

F(x)=9x^3+2x^2−5x+4 and g(x)=5x^3−7x+4.

Gennadij [26K]

$f(x)-g(x) = 2x(2x^2+x+1)$

Further explanation:

Given functions are:

$f(x)=9x^3+2x^2-5x+4\\g(x)=5x^3-7x+4$

In order to find f(x)−g(x), g(x) will be subtracted from f(x)

$f(x) -g(x) = 9x^3+2x^2-5x+4 - (5x^3-7x+4)\\= 9x^3+2x^2-5x+4-5x^3+7x-4\\= 9x^3-5x^3+2x^2-5x+7x+4-4\\=4x^3+2x^2+2x\\=2x(2x^2+x+1)$

Hence,

$f(x)-g(x) = 2x(2x^2+x+1)$

Keywords: Operations on functions, Difference of functions

Learn more about functions at:

#LearnwithBrainly

6 0

4 years ago

Evaluate the dot product of (5,7) and (-8,2)

Maslowich

Recall the dot-product is just <a,b> • <c,d> => a*c + b*d.

therefore here is just 5*(-8) + 7* 2, or namely -26.

5 0

3 years ago

16 × 2 1/2=? tell me you will get brainiest

ankoles [38]

Answer:

40.

Step-by-step explanation:

16 × 2 1/2= X

= 40.

3 0

3 years ago

Can someone help me

Vlada [557]

Answer:

Step-by-step explanation:

Cuz the other would be a straight line

6 0

4 years ago