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3 years ago

A window washer cleaned 38 windows in 2 hours.At this rate, how many windows did he clean in 7 hours?

2 answers:

5 0

Half of 38 is 19 so in one hour he can clean 19 windows. Then in 7 hours he can clean 133 windows. please rate me the brainiest!<span />

Norma-Jean [14]3 years ago

4 0

It will be 177 windows at this rate..
Because 38/2 *7

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(10v^4 + 30v^3 + 2v^2) / 10v

Zina [86]

Given expression is

$\frac{10v^4+30v^3+2v^2}{10v}$

Now we need to simplify this expression. We can begin by factoring numerator and denominator if possible.

$= \frac{2v^2(5v^2+15v+1)}{10v}$

divide numerator and denominator both by 2v

$= \frac{v(5v^2+15v+1)}{5}$

$= \frac{5v^3+15v^2+1v}{5}$

Hence final answer is $\frac{5v^3+15v^2+1v}{5}$

Or you can also keep factored form

$\frac{v(5v^2+15v+1)}{5}$

3 0

4 years ago

PLEASE HELP ME!!!

wlad13 [49]

It could be C or D but a salary is a fixed payment that is USUALLY on a yearly payment. I would answer D

3 0

3 years ago

Read 2 more answers

Determine the domain of the function 9x/ x(x^2-49)

8090 [49]

Answer:

Step-by-step explanation:

The given function may be reduced to -------------- , x ≠ 0 because we cannot

x^2 - 49

division by zero in the original form of the function is undefined. Furthermore, x cannot be either ±7, for the same reason.

Thus, the domain of this function h(x) is {x ≠ 0, x ≠ ±7}

4 0

3 years ago

Please Help I'll Give Brainliest To Whoever Answers It Right

Shalnov [3]

Answer:

2nd one

Step-by-step explanation:

sorry if that is incorrect it should be right though

5 0

3 years ago

Find the equation, (f(x) = a(x - h)2 + k), for a parabola containing point (2, -1) and having (4, -3) as a vertex. What is the s

postnew [5]

Given that the vertex of the parabola is (4,-3)

The parabola passes through the point (2,-1)

We need to determine the standard form of the equation of the parabola.

<u>Standard form of the equation of the parabola:</u>

The standard form of the equation is $y=a(x-h)^2+k$ where the vertex is (h,k) and a is the constant.

Substituting the vertex (4,-3) in the above equation, we get;

$y=a(x-4)^2-3$ ---------------(1)

Substituting the point (2,-1) in the above equation, we have;

$-1=a(2-4)^2-3$

$-1=a(-2)^2-3$

$-1=4a-3$

$2=4a$

$\frac{1}{2}=a$

Thus, the value of a is $\frac{1}{2}$

Substituting the value of a in the equation (1), we get;

$y=\frac{1}{2}(x-4)^2-3$

Thus, the standard form of the equation of the parabola is $y=\frac{1}{2}(x-4)^2-3$

3 0

3 years ago