Answer:
The answer is b
Step-by-step explanation:
Answer:
x = 10
, y = 10
Step-by-step explanation:
using the sine and cosine ratios in the right triangle and the exact values
cos60° = 
, sin60° = 
, then
cos60° = 
= 
= ( cross- multiply )
2x = 20 ( divide both sides by 2 )
x = 10
and
sin60° = 
= 
= ( cross- multiply )
2y = 20 × 
= 20 ( divide both sides by 2 )
y = 10
Answer:
PartA
P = 4a
Part B
60 = P fence + 2a
60 = 6a
Part C
40
Step-by-step explanation:
We are building a fence so we are finding perimeter.
Adding the 3 sides
P = a+b+a
P = 2a+b
It is twice as long as it is wide
b= 2a
Replace in the equation for perimeter
P = 2a+(2a)
P = 4a
Part B
We know the perimeter is 60 for the entire backyard
The perimeter of the backyard is the fence plus the longer side
60 = P fence + b
Replacing b
60 = P fence + 2a
We know the equation for the perimeter of the fence is
60 = 4a + 2a
Combing like terms
60 = 6a
Part C
Solve for a and b
60 = 6a
Divide each side by 6
60/6 = 6a/6
10 =a
P fence = 4a
P = 4(10) = 40
Answer:The answer is negative three
Step-by-step explanation:
Answer:
The final answer is-925x+3
Step-by-step explanation:
The problem to solve is:
3-5x10-7x125
Multiply x and 5
Multiply x and 1
The x just gets copied along.
The answer is x
x
5*x evaluates to 5x
Multiply 10 and 5x
Multiply 1 and x
The x just gets copied along.
x
5*x*10 evaluates to 50x
3-5*x*10 evaluates to 3-50x
Multiply x and 7
Multiply x and 1
The x just gets copied along.
The answer is x
x
7*x evaluates to 7x
Multiply 125 and 7x
Multiplying 1 and x
The x just gets copied along.
x
7*x*125 evaluates to 875x
-50x - 875x = -925x
The answer is -925x+3
3-5*x*10-7*x*125 evaluates to -925x+3
The final answer is-925x+3
_______________________________________
The problem to solve is:
15-5x6-7
Multiply x and 5
Multiply x and 1
The x just gets copied along.
The answer is x
x
5*x evaluates to 5x
Multiply 6 and 5x
Multiply 1 and x
The x just gets copied along.
x
5*x*6 evaluates to 30x
15-5*x*6 evaluates to 15-30x
15 - 7 = 8
The answer is 8-30x
15-5*x*6-7 evaluates to 8-30x
The final answer is8-30x
