Answer:
q*1/4>-16
Step-by-step explanation:
Answer:
The cost of the 1 muffin is $1.5 and 1 quart of milk cost is $3 .
Step-by-step explanation:
Let us assume that the cost of one muffins be x.
Let us assume that the cost of one 1 quarts of milk be y.
As given
The cost of 8 muffins and 2 quarts of mil is $18.
Than the equation becomes
8x + 2y = 18
As given
The cost of 3 muffins and 1 quart of milk is $7.50.
Than the equation becomes
3x + 1y = 7.50
Two equations are
8x + 2y = 18 and 3x + 1y = 7.50
Multiply 3x + 1y = 7.50 by 2 and subtracted from 8x + 2y = 18 .
Thus
8x - 6x + 2y - 2y = 18 - 15
2x = 3
![x = \frac{3}{2}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B3%7D%7B2%7D)
x = 1.5
Put x = 1.5 in 3x + 1y = 7.50
3 × 1.5 + y = 7.50
y = 7.50 - 4.5
y = 3
Therefore the cost of the 1 muffin is $1.5 and 1 quart of milk cost is $3 .
Answer:
![D=2\sqrt{\frac{A}{3.14}}](https://tex.z-dn.net/?f=D%3D2%5Csqrt%7B%5Cfrac%7BA%7D%7B3.14%7D%7D)
Step-by-step explanation:
we know that
The area of a circle is
----> equation A
The diameter of a circle is
----> equation B
Solve for r in the equation A
That means ---> isolate the variable r
Divide by 3.14 both sides
![\frac{A}{3.14}=r^{2}](https://tex.z-dn.net/?f=%5Cfrac%7BA%7D%7B3.14%7D%3Dr%5E%7B2%7D)
take the square root both sides
![\sqrt{\frac{A}{3.14}}=r](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7BA%7D%7B3.14%7D%7D%3Dr)
Rewrite
Substitute the value of r in the equation B
![D=2\sqrt{\frac{A}{3.14}}](https://tex.z-dn.net/?f=D%3D2%5Csqrt%7B%5Cfrac%7BA%7D%7B3.14%7D%7D)
Answer:
what grade are you in so then I could get the answer