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3 years ago

8

Ken bought a 37.5-pound bag of grass fertilizer. He used 1 2 of the bag for his backyard and 1 4 of the bag for his front yard.

How much of the fertilizer is left?

1 answer:

NeTakaya3 years ago

4 0

The answer to this question is 11.5

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Please help. I’ll mark you as brainliest if correct!

chubhunter [2.5K]

Answer:

$\boxed{\sf \ \ \ f^{-1}(x)=1+\sqrt{x} \ \ \ }$

Step-by-step explanation:

the minimum of f is for x = 1 and f(1)=0

f is decreasing for x<=1 and increasing for x>=1

so the domain is $[1;+\infty[$

$f^{-1}(f(x))=x =f^{-1}((x-1)^2)\\\\f(f^{-1}(x))=x=(f^{-1}(x)-1)^2$

x>=1 so x is positive and we can take the square root

so $f^{-1}(x)=1+\sqrt{x}$

8 0

3 years ago

What is the explicit rule for the geometric sequence?<br> 600, 300, 150, 75, ...

pochemuha

Answer:

Step-by-step explanation:

Hello, this is a geometric sequence so we are looking for a multiplicative factor.

$a_0=600\\\\a_1=a_0 \cdot \boxed{\dfrac{1}{2}} = 300 = 600 \cdot \boxed{\dfrac{1}{2}}\\\\a_2=a_1 \cdot \boxed{\dfrac{1}{2}} = 150= 300 \cdot \boxed{\dfrac{1}{2}}\\\\a_3=a_2 \cdot \boxed{\dfrac{1}{2}} = 75 = 150 \cdot \boxed{\dfrac{1}{2}}$

So, the explicit formula is for n

$\boxed{a_n=a_0\cdot \left(\dfrac{1}{2}\right)^n=600\cdot \left(\dfrac{1}{2}\right)^n}}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0

3 years ago

A construction compony purchased 24 boxes of nails. Each box cost $87. How much did the nails cost the construction company?

S_A_V [24]

87*24=2088

The nails cost $2088

7 0

3 years ago

Which relationships could have a negative correlation? Check all that apply. number of hours on video games and test scores spee

dexar [7]

<span>The following choices may have a negative correlation: - speed of a car and minimum stopping distance - average running speed and total race time - outside temperature and amount of a heating bill
<span>Theses factors may yield negative results depending on the variables that will be present in a controlled experiment.</span></span>

4 0

3 years ago

What is the value of x in the equation −6 + x = −2? <br><br><br> 8<br><br> 4<br><br> −4<br><br> −8

Ulleksa [173]

Answer:

4

Step-by-step explanation:

-6 + x = -2

add 6 to each side

-6 +6 +x = -2 +6

x = 4

3 0

3 years ago