Answer:
<em>y = </em><em> x + 1 </em>
Step-by-step explanation:
If AB ⊥ CD , then ( ) (
) = - 1
y = - x + 3
y - ( - 4) = ( x - 7) ⇔ <em>y = </em>
<em> x + 1 </em>
How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and if no digit can be repeatd?
1 answer:
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Answer:
x = -7
Step-by-step explanation:
So we are asked to find what x is equal to in the equation:
In other words, we are asked to solve for x.
Add 4 to both sides of the equation.
Multiply both sides by 7.
x = -7
So we have solve the equation for x and have found that x = -7.
I hope you find my answer and explanation to be helpful. Happy studying.
Answer:
C
Step-by-step explanation:
There’s nothing hard with this
You need to know special right triangles
This is a 30,60, 90 triangle
We automatically know becuase theres. Right angle (90) and a 60 degree angle
now the formula is the smallest side is (n) {I’m using N becuase theres already an X) or in this case, 6
The hypotenuse, the one directly above the 2nd biggest side, or the diagnoal side is 2n or (12). Now we know what X is in this situation which is 12. So that narrows it to 2 answers
Now the side on the bottom of the hypotenuse, the second biggest side is used in the formula N. So we know what N is in the beginning, 6 so we just plug that in and well get C. Attached is a photo on q 30, 60, 90 special right triangle
