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2 years ago

Help help help. I dont know how to do it

Mathematics

2 answers:

Scrat [10]2 years ago

6 0

Answer:

a) .2 hours per dollar

b) 3 pages per minute

Step-by-step explanation:

a) The hours per dollar means take the hours and divide by the dollars

7 hours/ 35 dollars = 1/5 = .2 hours per dollar

b) pages per minute means take the pages and divide by minute

9 pages/3 minutes = 3 pages per minute

Snowcat [4.5K]2 years ago

5 0

I think it is a because that is the right way you should do it

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I belive it would be 28 mph.

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2 years ago

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2 years ago

The value of 32cos85° is

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2 years ago

Read 2 more answers

What is 85% of 17,000 dollars that is asked on your irs tax forms

elena55 [62]

Hello!

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2 years ago

Factor f(x) = 15x^3 - 15x^2 - 90x completely and determine the exact value(s) of the zero(s) and enter them as a comma separated

Illusion [34]

Answer:

$x=-2,0,3$

Step-by-step explanation:

We have been given a function $f(x)=15x^3-15x^2-90x$ . We are asked to find the zeros of our given function.

To find the zeros of our given function, we will equate our given function by 0 as shown below:

$15x^3-15x^2-90x=0$

Now, we will factor our equation. We can see that all terms of our equation a common factor that is $15x$ .

Upon factoring out $15x$ , we will get:

$15x(x^2-x-6)=0$

Now, we will split the middle term of our equation into parts, whose sum is $-1$ and whose product is $-6$ . We know such two numbers are $-3\text{ and }2$ .

$15x(x^2-3x+2x-6)=0$

$15x((x^2-3x)+(2x-6))=0$

$15x(x(x-3)+2(x-3))=0$

$15x(x-3)(x+2)=0$

Now, we will use zero product property to find the zeros of our given function.

$15x=0\text{ (or) }(x-3)=0\text{ (or) }(x+2)=0$

$15x=0\text{ (or) }x-3=0\text{ (or) }x+2=0$

$\frac{15x}{15}=\frac{0}{15}\text{ (or) }x-3=0\text{ (or) }x+2=0$

$x=0\text{ (or) }x=3\text{ (or) }x=-2$

Therefore, the zeros of our given function are $x=-2,0,3$ .

7 0

3 years ago

Help help help. I dont know how to do it​

Help help help. I dont know how to do it