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3 years ago

In sea water there is 5% of salt. How much seawater do you need in order to get 17.25 lb of salt?

Mathematics

1 answer:

8090 [49]3 years ago

5 0

345 lb of sea water will be needed in order to get 17.25 lb of salt.

Have a lovely day!

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Evaluate abc² if a= -3, b= 6, and c= -8

Andreas93 [3]

Answer:

-1152

Step-by-step explanation:

abc² the expression can be rewritten using the given values for each letter

(-3)*6*(-8)^2 now we find the second power of (-8) by multiplying it with itself

(-8)*(-8) = 64

(-3)*6*64 = -1152

8 0

3 years ago

Can someone please help me with this?

jonny [76]

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4 years ago

A certain culture of year increases by 50% every three hours. A scientist places 9 grams of yeast in a culture dish. Write the e

miskamm [114]

Answer: a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

Step-by-step explanation:

Since we have given that

Number of grams of yeast in a culture dish initially = 9 grams

According to question, a certain culture of year increases by 50 % every three hours.

So, the explicit formula will be

$f(x)=9(1+\frac{50}{100})^{3x}\\\\f(x)=9(1+0.5)^{3x}\\\\f(x)=9(1.5)^{3x}$

And the recursive formula will be

$f(x)=9(1.5)^{3x}\\\\f(x+1)=9(1.5)^{3(x+1)}\\\\f(x+1)=9(1.5)^{3x+3}\\\\f(x+1)=9(1.5)^{3x}.(1.5)^3\\\\f(x+1)=f(x)\times 1.5^3$

Hence, a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

6 0

3 years ago

Answer this quick plz

victus00 [196]

Answer:

180

Step-by-step explanation:

What you have to do is multiply all of them.

9 x 4 x 5 = 180

8 0

4 years ago

A Radio tower is located 600 feet from a building. From a window in the building a person determines that the angle of elevation

Novay_Z [31]

Answer:

Draw and label a diagram!

htop of tower / 325 = tan 34°

hbottom of tower / 325 = tan 31°

height of tower = htop of tower + hbottom of tower

8 0

3 years ago