Answer:
The expression = -75
Step-by-step explanation:
Evaluate: Enter a number for each variable.
−x2+7(y+2)−1
x=
5
y=
-9
Evaluate for x=5,y=−9
−52+7(−9+2)−1
−52+7(−9+2)−1
=−75
Answer:
y = 72.5 cm
Step-by-step explanation:
We know that tan theta = opposite/ adjacent
tan 30 = x/y
tan 30 =36.25/y
Multiply each side by y
y tan 30 = 36.25y/y
y tan 30 = 26.25
Divide each side by tan 30
y tan 30 / tan 30 = 36.25/tan 30
y = 36.25/ tan 30
y =72.5
Answer:
5
Step-by-step explanation:
We have an equation and are asked to find the input of x when y = 7.
The output = y = 7
The input = x
7 = 2x - 3
2x - 3 = 7
We need to find a number that multiplied by 2 which then is subtracted by 3 equals 7. We can use the backwards method to solve our answer.
2x - 3 = 7
7 + 3 = 2x
10 = 2x
Solve for x by dividing 2 from both sides :
x = 5.
Therefore, you would need an input of 5 to get 7 as the output.
Proof :
2(5) - 3 = 7
10 - 3 = 7
Answer:
B. could become equal to the population mean if proper sampling techniques are employed.
Step-by-step explanation:
If any similarities it does not mean equal.
Answer:
Let's write this out in an equation.
y = 4 + 7x
