3 years ago

Why do you think rates are usually written as unit rates

1 answer:

5 0

It's simpler and clearer to write unit rates. For example, I averaged 59 miles per hour (59 mph) on this morning's drive back home. I could also state that I averaged 118 miles per 2 hours (which is mathematically equivalent).

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Jill was solving a system using the elimination method.After she added the equations together,she got 5=7.What does this mean fo

harkovskaia [24]

Answer:

It means the system does not have a solution

Step-by-step explanation:

5 0

2 years ago

Multiply and simplify if possible.<br> sqrt 5x(sqrt x-5 sqrt 5)

RSB [31]

Making the assumption that your problem looks like this,
$\sqrt{5x}(\sqrt{x}-5\sqrt{5})$

we use the distributive property to multiply:
$\sqrt{5x}\times \sqrt{x}-\sqrt{5x}\times5\sqrt{5}
\\
\\ \sqrt{5x^2} - 5\sqrt{25x}
\\
\\ x\sqrt{5}-25\sqrt{x}$

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3 years ago

A rancher with 420420 meters of fence intends to enclose a rectangular region along a river (which serves as a natural boundary

Kobotan [32]

Perimeter of Rectangle: 2W + 2L
One L is the river so we have 3 sides
420m/3 = 140m

Area of Rectangle is WL
140×140= 19,600 Sq meters

I'm assuming you may have another mathematical system the teacher wants you to use. Yet, I get Area is 19,600 Sq meters

4 0

3 years ago

The function C(x) = 25x + 50 represents the labor cost (in dollars) for Certified Remodeling to build a deck, where x is

Whitepunk [10]

Answer:

Master Remodeling

Step-by-step explanation:

<em>Original question is attached</em>

<h3>Option 1</h3>

C(x) = 25x + 50
C(8) = 25*8 + 50 = $250

<h3>Option 2</h3>

As per table, the rate of change is $30 per 2 hours.
So 8 hours will cost
$190 + $30 = $220

As we see the second option is cheaper so we should hire the Master Remodeling

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3 years ago

Solve the system y = 2x + 9 and 3y = 6x + 18 by using graph paper or graphing technology. What is the solution to the system?

V125BC [204]

3x-9=6x-2x tyhjijhvssd hbjhbbb. Schhybhb. Schhjhh. Scvbbhh. Vbbjjn. Baby

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3 years ago