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3 years ago

A laundromat charges $1.50 to wash and $1.25 to draw a load of laundry.

Mathematics

2 answers:

marta [7]3 years ago

5 0

Answer:B, C, E

Step-by-step explanation:

Komok [63]3 years ago

3 0

Answer:

High possibility it is A, C, D. I apologize if wrong

Step-by-step explanation:

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Can someone help me answer this?

tiny-mole [99]

Answer:

Step-by-step explanation:

Factor the given function:

(x + 2)(x + 5)

f(x) = --------------------

(x + 5)(x + 4)

The factor (x + 5) can be crossed out in numerator and denominator. There is a 'hole' at x = -5 (which comes from setting (x + 5) = 0 and solving for x).

If we do cancel the (x + 5) factors, we are left with

(x + 2)

f(x) = ------------- . We can't just substitute x = -5 because the original

(x + 4) function is not defined for that x value. However, we

can locate the hole by letting x have the value of a litle more than -5, obtaining:

( -5+ + 2)

f(-5+) = -------------, which comes out to approx. -3/-1, or +3 .

(-5+ + 4)

So the hole location is (-5, 3).

f(x) = --------------------

(x + 5)(x + 4)

7 0

3 years ago

Can someone help me with this math homework please!

defon

Answer:

(A, B, D)

Step-by-step explanation:

Let's evaluate each answer choice:

"The independent variable is the number of people"

Correct. The number of people is independent and DOESN'T depend on the total cost to change.

"The initial value (initial fee) for the pinic is $40"

Correct. In this table, every 3 people increases the cost by $6. So that means 6 people would increase the cost by $12. From the first row of 6 people and $52, if we "subtracted" 6 people and "subtracted" $12, we would get a value of 0 people with a total cost of $40.

"The rate of change is $8.67 per person"

Wrong. To find the rate of change (also called slope), use this method below:

(y_2 - y_1)/(x_2 - x_1)

(6, 52) (9, 58)

x_1 = 6

x_2 = 9

y_1 = 52

y_2 = 58

(58 - 52)/(9-6)

6/3 = 2

The rate of change is 2, not 8.67.

"As the number of people increases, the total cost of the picnic increases."

Correct. As you can see in the table, as the number of people increase (6, 9, 12, 15), the total cost increases as well (52, 58, 64, 70).

"If 4 people attended the picnic, the total cost would be $46."

Wrong. In one of the previous answer choices, we found out that the rate of change, or the cost per person at picnic, is $2, and the intial fee is $40. From this info, we can form this equation:

y = 2x + 40

And if we plug in 4 people into this equation, we DON'T end up with total cost of $46:

2(4) + 40

8 + 40 = 48

The total cost for 4 people is $48, NOT $46

Hope this helps (●'◡'●)

3 0

3 years ago

What is 0 factorial? Or 0!

Vlad1618 [11]

Definitely zero (0)............

8 0

4 years ago

Which shows the following expression after the negative exponents have been eliminated? m^7 n^3/ mn^-1 assume m=0 and n=0

aliina [53]

Given expression is $\frac{m^7n^3}{mn^{-1}}$ .

where $m \neq 0, n \neq 0,$

Now we have to simplify this and find the next step so that negative exponent gets eliminated.

We know that when negative exponent changes sign, then it moves from numerator to denominator or from denominator to numerator as shown in the formula:

$x^{-m}=\frac{1}{x^m}$

or $\frac{1}{x^{-m}}=x^{m}$

n has negative exponent in denominator so it will move to numerator and we get:

$\frac{m^7n^3n^1}{m}$

or $\frac{m^7n^3n}{m}$

Hence final answer is $\frac{m^7n^3n}{m}$ .

8 0

3 years ago

Read 2 more answers

Can someone explain how to do this? thank you!

Alisiya [41]

The answer will be Negative

Write sin( $\frac{5 \pi }{4}$ ) as sin( $\pi$ + $\frac{ \pi } {4}$ )

Using the summation identity will be:
=sin( $\pi$ )+cos( $\pi$ )sin( $\frac{ \pi }{4}$ )

By following the trivial identity, you should get:
=0* $\frac{ \sqrt{2}}{2}+(-1) \frac{\sqrt 2} {2}$

Remove the parentheses on -1, then multiply
=0* $\frac{ \sqrt 2} {2}-1* \frac{ \sqrt 2} {2}$

You should get:
$- \frac{ \sqrt 2} {2}$

6 0

3 years ago