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3 years ago

Please help ty!

Mathematics

1 answer:

Alja [10]3 years ago

8 0

Answer:

Klean company = 20 + 25h

Dustbuster cleaning services = 35h

Step-by-step explanation:

Let

Number of hours = h

Equation to calculate the cost of cleaning your house

Klean company = 20 + 25h

Dustbuster cleaning services = 35h

Find the number of hours when the cost of cleaning house by both companies will be equal

Klean company = Dustbuster cleaning services

20 + 25h = 35h

20 = 35h - 25h

20 = 10h

h = 20/10

h = 2 hours

Number of hours = h = 2 hours

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Nine chips numbered 1 through 9 are placed in a box and mixed. Margie selected one chip from the box. What is the probability th

AlexFokin [52]

Answer: $\dfrac{1}{3}$

Step-by-step explanation:

Given

There are 9 chips numbered 1 to 9 placed in a box

Margie selected one chip from the box

If the chip is multiple of 3 then the chip can be 3, 6, or 9

So, the probability associated with this is

$\Rightarrow P=\dfrac{\text{favorable}}{\text{Total}}\\\\\Rightarrow P=\dfrac{3}{9}\\\\\Rightarrow P=\dfrac{1}{3}$

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3 years ago

Which of the following is a solution to the system of equations? y= 3x-2 6 + y=-x

AlladinOne [14]

Answer:

x=-1 y = -5

Step-by-step explanation:

y= 3x-2

6 + y=-x

Substitute the first equation into the second equation

6 +y =-x

6+ (3x-2) = -x

Combine like terms

4 + 3x = -x

Subtract 3x from each side

4 +3x -3x = -x -3x

4 = -4x

Divide by -4

4/-4 = -4x/-4

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Now we need to find y

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3 0

3 years ago

Read 2 more answers

What are the solutions to the equation x2 + 6 = 87? A. –10 and 10 B. The equation has no solutions. C. –6 and 6 D. –9 and 9

kakasveta [241]

X² + 6 = 87
 - 6 - 6
 x² = 81
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x = 9 U x = -9
The solution set is equal to D. {+9}.

8 0

3 years ago

Through (-4,5) and parallel to y = -3/2x-5

Ratling [72]

**Disclaimer** Hi there! I assumed the question to be asking for a line expression. The following answer will be according to this understanding. Please let me know if I am incorrect and I will modify my answer correspondingly

Answer: $\Large\boxed{y-5=-\dfrac{3}{2} (x+4)}$

Step-by-step explanation:

Given information

$\text{Pass~through~point}=(x_1,~y_1)=(-4,~5)$

$\text{Parallel~to}:y=-\dfrac{3}{2} x-5$

Given equation form

Point-slope form is the most efficient way to write the expression

$\text{Point-slope form}:y-y_1=m(x-x_1)$

$(x_1,~y_1)=\text{A point that the line passes through}$

$m=\text{Slope}$

Determine the slope

$\text{Since the line is parallel to } y=-\dfrac{3}{2} x-5 \text{ , by the property of parallel}\\\text{lines, the slope of the given line is also }-\dfrac{3}{2}$

$\text{Therefore, m}=-\dfrac{3}{2}$

Substitute values into the given form

$y-y_1=m(x-x_1)$

$y-(5)=-\dfrac{3}{2} (x-(-4)$

Simplify the expression

$\Large\boxed{y-5=-\dfrac{3}{2} (x+4)}$

Hope this helps!! :)

Please let me know if you have any questions

5 0

2 years ago