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3 years ago

Kyle is renting a jet ski for the day. Below are his two options.

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

3 0

Hi Lawrence!

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We Know:

Powersports Plus: $30 an hour plus a non-refundable deposit of $50.

Sun & Surf: $20 an hour plus a non-refundable deposit of $80.

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Equation:

x = per hour

y = total

Powersports: 30x + 50 = y

Sun and Surf: 20x + 80 = y

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Solution: (Add the deposit then start adding hourly costs)

Powersports: 80, 110, 140

Sun and Surf: 100, 120, 140

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Answer: After 3 hours both companies will cost the same amount of money.

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Hope This Helps :)

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Select all that apply. Which steps are involved in multiplying fractions?

krek1111 [17]

I believe here are the necessary steps

- Multiply the numerators together
- Check to see if the product can be simplified
- Multiply the denominators together

Infraction multiplication, we do not have to find a common denominator. And inverse played a role in a division between two fractions, not multiplication per se.

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3 years ago

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Where do I put the parentheses in 21-8-6=7

Sliva [168]

Answer:

around 21-8 so the equation would look like this (21-8)-6=7

Step-by-step explanation:

you do this because if u put the parentheses around 8-6 you would get 21- (8-6)= 19 because 21 - 2 = 19 so you have to put them around 21-8 to get the right answer

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3 years ago

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Solve the following system of equations: x + 3y = −4 x + 5y = −6 pls and thx

Agata [3.3K]

Answer:

x = -1 y = -1

Step-by-step explanation:

x + 3y = −4

x + 5y = −6

Multiply the first equation by -1

-x - 3y = 4

The add to the second equation to eliminate x

-x - 3y = 4

x + 5y = −6

--------------------

2y = -2

Divide by 2

2y/2 = -2/2

y = -1

Now solve for x

x+3y = -4

x +3(-1) = -4

x -3 = -4

Add 3 to each side

x-3+3 = -4+3

x = -1

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3 years ago

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The base of a pyramid has n sides. Write and expression for the number of faces of the pyramid

11111nata11111 [884]

Remark

The number of faces reaching out in the 3rd dimension of the pyramid = the number of edges on the base.

Givens

Number of edges (or sides on the base)= e

Number of faces = f

Formula

F = e + 1 Don't forget that the base is also a face.

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3 years ago

Find the equation of a line that is parallel to y = 2x + 3 and passes through (-1, -1).

drek231 [11]

Answer:

y = 2x +1

Step-by-step explanation:

The given line is in "slope-intercept" form, where the slope is the coefficient of x, 2, and the intercept is the added constant, 3. The parallel line will have the same slope, but its constant will be different. We can find the constant by putting the given point into an equation with the constant as the unknown:

y = 2x + b

-1 = 2(-1) +b . . . substitute for x and y

2 -1 = b . . . . . . add 2

1 = b

So the equation for the parallel line is ...

y = 2x + 1

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3 years ago