Answer:
-10 feet below the surface of the water
Step-by-step explanation:
We are told that the dive rings position at the bottom of the pool is 10 feet below the surface of the water.
Now, an integer is basically a whole number that can either be be zero, positive or negative.
In this case, it's below the surface which means it's below zero.
Thus, it's negative.
So the integer is -10 feet below the water surface.
The missing figure is attached
The value of a is
⇒ 2nd answer
Step-by-step explanation:
Let as revise the Pythagoras Theorem
In the right triangle ABC, where ∠B is a right angle (AC is the hypotenuse, Ab and BC are the legs of the right angle)
- (AC)² = (AB)² + (BC)²
- (AB)² = (AC)² - (BC)²
- (BC)² = (AC)² - (AB)²
If BD is drawn perpendicular to AC, we can use these rules
- (AB)² = AD × AC
- (BC)² = CD × AC
- (BD)² = AD × CD
- AB × BC = BD × AC
In Δ WYZ
∵ m∠WYZ = 90°
- By using Pythagoras Theorem
∴ (WZ)² = (WY)² + (YZ)²
∵ WY = 4 units
∵ YZ = 3 units
∵ WZ = c units
∴ c² = (4)² + (3)²
∴ c² = 16 + 9 = 25
- Take √ for both sides
∴ c = 5
In Δ XWZ
∵ m∠XWZ = 90°
∵ WY ⊥ XZ
- We can use the rule (WZ)² = ZY × ZX
∵ (WZ)² = ZY × ZX
∵ WZ = 5 units
∵ ZY = 3 units
∵ ZX = (3 + a) units
∴ (5)² = 3(3 + a)
∴ 25 = 9 + 3a
- Subtract 9 from both sides
∴ 16 = 3a
- Divide both sides by 3
∴ a = 
The value of a is 
Learn more:
You can learn more about the rules of the right triangle in brainly.com/question/14390928
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6.25t + 8 = 12.5t + 13
Subtract 8 from both sides
6.25t = 12.5t +5
Subtract 12.5t from both sides
-6.25t = 5
Divide -6.25 by both sides
t = 0.8
The y intercept is -2, but I don't remember how to find the vertex sorry