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3 years ago

What is the unit rate in miles per hour if Kelly walks 6 miles in 1.5 hours?

Mathematics

1 answer:

sammy [17]3 years ago

6 0

Answer:

4 miles per hour.

Step-by-step explanation:

6/1.5 = 4

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The amount of time t it takes for a group of volunteers to clean up a park varies inversely with the number of volunteers v. If

sweet-ann [11.9K]

T ∝ 1/v

so, t = k/v or tv = k 

Then, with t = 2.5 and v = 5 we have: 

2.5 = k/5 

so, k = 12.5 

Therefore, t = 12.5/v or vt = 12.5 HOPE IT HELPED

4 0

3 years ago

Read 2 more answers

Which expression is equal to “seven more than a number multiplied by 9"?

ipn [44]

Answer:

Step-by-step explanation:

a: is not because in the distribution property, the answer would be for a, 9x+63.

b: yes.

c: it's subtracting, not adding. The question states adding

d: 7 is not the one being multiplied in the question, 9 is. Therefore b is right

The explaining is not good but im pretty sure it's b..

7 0

2 years ago

What is (-i)5? A -1 B 1 C -I D i

dezoksy [38]

Answer:

-i^5=-i

Step-by-step explanation:

rewrite the equation ;

i^4=1

I^4 *-i = 1*-i=-i

8 0

3 years ago

When it says graph the image, it's asking me to graph a reflection across x = -2. what's the answer look like?

uranmaximum [27]

The reflection across x = -2 will be x = 2.

8 0

3 years ago

Find a third degree polynomial function of the lowest degree that has the zeros below and whose leading coefficient is one.

Tanzania [10]

Answer:

The polynomial function of the lowest degree that has zeroes at -1, 0 and 6 and with a leading coefficient of one is $p(x) = x^{3}-5\cdot x^{2}-6\cdot x$ .

Step-by-step explanation:

From Fundamental Theorem of Algebra, we remember that the degree of the polynomials determine the number of roots within. Since we know three roots, then the factorized form of the polynomial function with the lowest degree is:

$p(x) = (x-r_{1})\cdot (x-r_{2})\cdot (x-r_{3}) = 0$ (1)

Where $r_{1}$ , $r_{2}$ and $r_{3}$ are the roots of the polynomial.

If we know that $r_{1} = -1$ , $r_{2} = 0$ and $r_{3} = 6$ , then the polynomial function in factorized form is:

$p(x) = (x+1)\cdot x \cdot (x-6)$ (2)

And by Algebra we get the standard form of the function:

$p(x) = x\cdot (x+1)\cdot (x-6)$

$p(x) = x\cdot (x^{2}-5\cdot x -6)$

$p(x) = x^{3}-5\cdot x^{2}-6\cdot x$ (3)

The polynomial function of the lowest degree that has zeroes at -1, 0 and 6 and with a leading coefficient of one is $p(x) = x^{3}-5\cdot x^{2}-6\cdot x$ .

6 0

2 years ago