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kozerog [31]
3 years ago
9

In summer, the price of strawberries goes up by $1.25 per pound. Sam bought two pounds of strawberries at the new price for $8.4

6. Write an algebraic equation to determine the original price per pound (s). Use the equation to find the original price per pound.Show your work.
Mathematics
1 answer:
Ivahew [28]3 years ago
5 0

Answer:

The original price was $7.21

Step-by-step explanation:

8.46-1.25= 7.21

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The answer would be $24.55 per oz of gold alloy so rounded up would be $25
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zubka84 [21]

Answer:

1. x= -1/3

2. y= -4, x= 2

3. y=-2, x=1

Step-by-step explanation:

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3 years ago
Can someone help me please ​
andrey2020 [161]

Answer: y = 6

Step-by-step explanation:

A square's area can be done by using s^2, where s is y in this case.  Because there are 5 squares, the area of the figure is 5y^2.  Because the area is also 180cm, 5y^2=180.

Then divide both sides of the equation by 5 to get y^2 = 36.  Then square root both sides of the equation to get y = 6.

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3 years ago
Find the length of side x in the simplest radical form with a rational denominator.
krok68 [10]

Answer:

\sqrt{2}

Step-by-step explanation:

We can use either angle, but I'm going to use the one on the bottom. So, in order to find x, we need to use tangent. One side we know is the adjacent, and the side we don't know is the opposite, therefore we need tangent. Here's the equation:

tan(45)=\frac{x}{\sqrt{2}}

Obviously, we can't have a root in our denominator, so we need to get rid of it somehow. Here's how:

We multiply the denominator of the fraction by \sqrt{2}. \sqrt{2} multiplied by itself is simply 2. Try it! We also want to multiply the numerator by \sqrt{2}, but there isn't really a number we can use with that, so we'll just add it to the side. The equation you have now is:

tan(45)=\frac{x\sqrt{2} }{2}

Let's try to work this out now. Since the denominator is 2, we have to multiply both sides by it to find x.

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We can plug 2 in for the x in the numerator now:

\frac{2\sqrt{2} }{2}

2 and 2 cancel out, so you get 1 in both the numerator and denominator. That's how we get our answer of x=\sqrt{2}

Also, because this is a 45-45-90 triangle, you don't really have to do all that work. If it's a 45-45-90 triangle, both legs should be the same length. :)

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3 years ago
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ANEK [815]

If the equal is 55x + 35y = 200

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If the car spends 2.5 hours at 35 miles per hour, then it drove:

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There the drive spent about 2.5-hour driving at 55 mph.

Hope it helps!

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