Answer:
Volume of a sphere is 4/3(pi r ^3)
You were given d = 10 so r = 5
Answer:
pretty sure its B
Step-by-step explanation:
Forty three million, eighty thousand and seven hundred.
Answer:
The answer to your question is below
Step-by-step explanation:
1.- y = 2x - 64
x - 2y = 14
Substitution
x - 2(2x - 64) = 14
Simplification
x - 4x + 128 = 14
x - 4x = 14 - 128
-3x = - 114
x = 114/3
x = 38
y = 2(38) - 64
y = 76 - 64
y = 12
Solution (38, 12)
2.- y = x - 6
3x + 2y = 8
Substitution
3x + 2(x - 6) = 8
Simplification
3x + 2x - 12 = 8
5x = 8 + 12
5x = 20
x = 20 / 5
x = 4
y = 4 - 6
y = -2
Solution (4 , -2)
3.- x - y = 12
27 + 3y = 2x
x = 12 + y
27 + 3y = 2(12 + y)
27 + 3y = 24 + 2y
3y - 2y = 24 - 27
y = -3
x = 12 - 3
x = 9
Solution y = -3
4.- y = 2x + 14
-4x - y = 4
-4x - (2x + 14) = 4
-4x - 2x - 14 = 4
-6x = 4 + 14
-6x = 18
x = 18/-6
x = -3
y = 2(-3) + 14
y = -6 + 14
y = 8
Solution y = 8
Step-by-step explanation:
I assume the question is asking for Eric's grandfather age now.
Let Eric's age now be x. Then Eric's grandfather age now is (x + 55).
In 7 years, Eric's age will be (x + 7) and Eric's grandfather age will be (x + 62).
We know that (x + 62) = 6(x + 7).
x + 62 = 6x + 42
5x = 62 - 42 = 20
x = 4.
Answering the question: Eric's grandfather age now is (4 + 55) = 59 years old.
