Question:
Is 8 = -4 + 2y a function or not?
Steps on how to solve:
1. Add 4 to both sides
2. Simplify,
3. Then, divide both sides by 2
4. Simplify,
- 2 = y
- So yes it is a function!
Hope that helped!!
~Serina
Answer:
The correct answer is option C
a = 10√3, b = 5√3, c = 15 and d = 5
Step-by-step explanation:
Points to remember
The angles of a right angled triangle, 30°, 60° and 90° then sides are in the ratio, 1: √3 : 2
<u>To find the value of variables</u>
From the figure we can see 2 right angled triangle with angle 30, 60 and 90
we get, d= 5 then b = 5√3
b = 5√3 the c = 5√3 * √3 = 15
and a = 2 * 5√3 = 10√3
Therefore the correct answer is option C
a = 10√3, b = 5√3, c = 15 and d = 5
4b - 6b + 19
Answer : -2b + 19
Question One
y = v - 1/2 g t^2 Subtract v from both sides.
y - v = - 1/2 gt^2 Multiply both sides by - 1
-(y - v) = 1/2gt^2 Remove the brackets.
v - y = 1/2 gt^2 Divide by g
(v - y)/g = 1/2 t^2 Multiply by 2 on both sides
2(v - y)/g = t^2 Move the 2 to the denominator on the left.
(v - y) / 0.5g = t^2 Take the square root of both sides.
sqrt [ (v - y) / 0.5g ] = t
Answer: B or second one down <<<<<<<
Question Two
There are no minuses in the answer. That eliminates 2 and 3
km^2 - c = n Add c to both sides.
km^2 = c + n divide both sides by k
m^2 = [c + n]/k Take the square root of m^2
m = sqrt [(c + n)/k]
Answer A or the first one.
Problem 3
This is an estimation question. One value of x is <0 the other > 0
The two graphs cross when x = a bit over 2 and x < about - 5
The answer is C 2.1 and - 5.1 about.
Answer: 2.1 and -5.1
Answer: C <<<<<<<<<
Answer:
The answer is (-56)
Step-by-step explanation:
3/5(x – 19) = -15
(x – 19)/5 = -15
x – 19 = (-15)(5)
x – 19 = -75
x = 19 – 75
x = -56
Thus, The value of x is (-56)
<u>-TheUnknownScientist</u><u> 72</u>
