Answer:
The value of 2 pennies and 3 dimes is 17¢. The value of p pennies and d dimes is (p×1)+(d×5)
Step-by-step explanation:
Use the formula (p×1)+(d×5).
Insert the number of pennies and dimes into the formula: (2×1)+(3×5).
Solve the equation: (2×1)+(3×5)
= 2+(3×5)
= 2+15
= 17
So, there are 17¢ in 2 pennies and 3 dimes.
The answer for question 2 is the formula written above.
Answer:
3x = 50 - 10y
Step-by-step explanation:
Here, x represents the number of 3 lb weights and y represents the number of 10 lb weights,
So, total weight of 3 lb weights = 3x
And, the weight of 10 lb weights = 10y
Total weight of all his weights = 3x + 10y
According to the question,
Total weight = 50 lb,
⇒ 3x + 10y = 50
Or 3x = 50 - 10y
Which is the required equation.
Second option is correct.
Givens
V = 209.3 in^3
pi = 3.14
h = 8 in
Formula
V = 1/3 pi r^2 h
209.3 = 1/3 * 3.14 * r^2 * h Multiply both sides by 3
209.3 * 3 = 3.14 * r^2 * 8
627.9 = 3.14 * r^2 Divide by 3.14
627.9/3.14 = r^2 * hThis rounds to 200
199.968 = r^2 * 8
8*r^2 = 199.968 Divide by 8
r^2 = 199.968 / 8
r^2 = 24.996
r = sqrt(24.996)
r = 4.9996 That's not quiet the answer.
diameter = 2*r
diameter = 2* 4.9996
diameter = 9.9992
d = 9.9992 <<<<< answer
You might want to think about rounding to 10 when you enter your answer.
Answer:
x = 58
Step-by-step explanation:
We can use algebra to solve this one! Since <FAE + <FA= 180 we can write :
x + 7 + 2x -1 = 180
Let's simplify the left side to :
3x + 6 = 180
Subtract 6 to isolate the variable.
3x = 174
Divide both sides by 3 to get
x = 58
Answer:
x = 5°
Step-by-step explanation:
2x+20 = 3x +15 —> Opposite angles
3x - 2x = 20 - 15
x = 5
I hope I helped you^_^