A) b^2 + 4b + 4
b) x^2 - 9
Answer:
x=20
Step-by-step explanation:
Well we know the right angle is 90 so...
And we also know that all the angle of a triangle add up to 180°.
Knowing this you can subtract 40° and 90°, this gives you 50°...
Then you can substitute 20° for x and then it will be 2(20°)+10°
Simplify and get 40°+10°
This equals 50° degrees
You then add that all up and you get 180°, this mean the answer is correct!
Hope this helps!
All the love, Ya boi Fraser :)
Answer:
The sale price is $649.35.
Step-by-step explanation:
Multiply the price of the iPad Pro by the discount in decimal form subtracted from 1.
Price of iPad Pro: 999
discount in decimal form subtracted from 1:
35% = 0.35
Subtract from 1.
1 - 0.35 = 0.65
Multiple the two values:
Sale price = 999 * 0.65 = 649.35
The sale price is $649.35.
Answer:
The mean point is 459
Step-by-step explanation:
We use the formula:
Evelyn's points per pinball game are normally distributed with a standard deviation of 18 points.
This means:
From the question, the standard deviation of 405 points is -3.
We substitute x=405, and z=-3 to get:
Multiply through by 18 to get:
Divide through by -1
I think it is B there is a weak negative association between the variables