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Lynna [10]
2 years ago
13

Mr. Yi buys vegetables at a market. He purchases 6 pounds of potatoes, p, and 3 pounds of onions, n, for $18. Onions cost twice

as much as potatoes. To determine the unit price for each item, his daughter sets up and solves the system of equations shown.
Mathematics
2 answers:
Snowcat [4.5K]2 years ago
6 0

Answer:

6 pounds of potatoes = $9

3 pounds of onions = $9

The onions cost $3 per pound

and the potatoes cost $1.50 per pound

Step-by-step explanation:

Art [367]2 years ago
4 0

Answer:

Unit price of  potatoes = $1.50.

Unit price of onions - $3.

Step-by-step explanation:

The system of equations is

6p + 3n = 18

n = 2p

Substitute  n = 2p in the first equation:

6p + 3(2p) = 18

6p + 6p = 18

12p= 18

p = 18/12 = $1.50 .

Now plug p = 1.50 into the second equation:

n = 2*1.50 = $3.

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PLEASE HELP WILL GIVE 1ST RIGHT ANSWER AS BRAINIEST The radius of a circle is x+6 and its diameter is 3x+5. What is the circumfe
Rzqust [24]

Answer:

The circumference of the circle = 26π unit.

Step-by-step explanation:

Given:

Radius of the circle, r = "x+6"

Diameter of the circle, d = "3(x)+5"

We have to find the circumference of the circle in terms of pi.

Formula to be used:

Circumference of a circle = 2πr or πd

As we know that:

Radius = Half of diameter

So,

⇒ radius=\frac{diameter}{2}

⇒ x+6=\frac{3x+5}{2}

⇒ 2\times (x+6)=\frac{3x+5}{2}\times 2

⇒ 2x+12=3x+5

⇒ 12-5=3x-2x  ...<em>Arranging variables and constants. </em>

⇒ 7=x

Plugging x = 7 we will find the radius and the diameter.

⇒ Radius = "x+6" = "7+6" = 13

⇒ Diameter = "3(x)+5" = 3(7)+5 =26

Lets find the circumference of the circle.

⇒ Circumference = 2\pi r= 2\pi (13) = 26 \pi        Or

⇒ Circumference = \pi d=\pi (26)=26\pi

The circumference of the circle = 26π unit.

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gayaneshka [121]

Answer:

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