Answer:
254.47 ![cm^2](https://tex.z-dn.net/?f=cm%5E2)
Step-by-step explanation:
First you have to know the formula for the area of a circle which is:
<h2>
![A=\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2)
</h2>
In the word problem it gives us the radius of a pancake which is 9 cm, so we just need to plug it into<em> r </em>in our formula:
<h2>
![A=\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2)
</h2><h2>
![A=\pi (9)^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20%289%29%5E2)
</h2>
≈ 254.47 ![cm^2](https://tex.z-dn.net/?f=cm%5E2)
Answer:
x = 1, y = 10
Step-by-step explanation:
y = -5x + 15 --- Equation 1
2x + y = 12 --- Equation 2
Substitute y = -5x + 15 into Equation 2:
2x + y = 12
2x - 5x + 15 = 12
Evaluate like terms.
15 - 3x = 12
Isolate -3x.
-3x = 12 - 15
Evaluate like terms.
-3x = -3
Find x.
x = -3 ÷ -3
x = 1
Substitute x = 1 into Equation 2:
2x + y = 12
2(1) + y = 12
2 + y = 12
Isolate y.
y = 12 - 2
y = 10
Answer:
3x^2 +14x-5
Step-by-step explanation:
(3x-1)(x+5)
We need to FOIL
first 3x*x =3x^2
outer 3x*5 = 15x
inner -1*x = -x
last -1*5 =-5
Add it together
3x^2 +15x-x-5
Combine like terms
3x^2 +14x-5
Answer:
4) 0.425, 17/40, 42.5%
5) 0.875, 7/8, 87.5%
Step-by-step explanation:
4) 17/40= 0.425, 17/40 is simplified to the lowest form already, and (0.425x100)x 1/100
5) 35/40=0.875, 35/40=7/8, and (0.875 * 100) * 1/100= 87.5%
i hope htis helps sorry if i got anything wrong
Answer:
You can get 2 pounds of pecan for the cost of 22$
Step-by-step explanation:
if 3 pounds of pecan cost 33$ that means 1 Pound of pecan cost 11$ So if there is three pound of pecan that means it cost 33$ like it says in the question, so for the price of 22$ you can get two pecans.