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zvonat [6]
2 years ago
13

The surface area of a sphere with radius R can be calculated using the formula S=4pi*r^2. Write a formula showing r's dependence

on S. (Write r in terms of S.)
I tried r=sqrt(S/4pi) and the absolute value of that, but both didn't work.
Mathematics
1 answer:
son4ous [18]2 years ago
4 0

Step-by-step explanation:

your expression for the dependence of r on S is correct

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3x+1 = y 2x+3y = 14<br> please explain the steps if you can as well
Likurg_2 [28]
3x + 1 = y
2x + 3y = 14

To solve this system of equations, we are going to use the substitution method.  Substitution the equation where the variable is isolated into the second equation.  In this system of equations, y is isolated, so we will replace y in the second equation with 3x + 1.

2x + 3y = 14
2x + 3(3x + 1) = 14
2x + 9x + 3 = 14
We will add the like terms and subtract 3 from both sides of the equation.
11x + 3 = 14
11x = 11
x = 1
In this system of equations, x is equal to 1.  Now we will go back and solve for y, plugging in 1 for x.
3(1) + 1 = y
2(1) + 3y = 14

3 + 1 = y
2 + 3y = 14

4 = y
3y = 2

4 = y
4 = y

The solution to this system of equations is (1, 4).

8 0
3 years ago
Find the coordinates of the intersection of the diagonals of parallelogram qrst with vertices q(-8,1), r(2,1), s(4,-3), t(-6,-3)
TiliK225 [7]

Answer:

Point of intersection is (-2, -1).

Step-by-step explanation:

The diagonals bisect each other so we only need to find the midpoint  of one of the diagonals. We'll use the diagonal qs:-

Midpoint = (-8 + 4)/2, (1 + -3)/2

= (-2, -1)


3 0
3 years ago
8:10 = 2:5<br> Is a true proportion?<br><br> O Yes<br> O No
Marina86 [1]

Answer:

Step-by-step explanation:

it is not.

7 0
3 years ago
Read 2 more answers
The solution to the system of equations 2x+3y=18 -9y+z=-23 is (A,B,C) find the 5x-4z=50 values of A,B,and C
never [62]

Answer:

6 = A, 2 = B, -5 = C

Step-by-step explanation:

3 0
2 years ago
Please help me on this !!
Vilka [71]

Answer:

perpendicular

Step-by-step explanation:

the photo shows a diagram. it does not intersect. the line was extrapolated to show it was perpendicular.

8 0
3 years ago
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