Answer:
x ≥ −2
Step-by-step explanation:
This problem deals with inequalitites.
The expression is
x*2 ≥ −4
If we divide by 2 each side of the expression, we get
x* 2 / 2 ≥ −4 / 2
x ≥ −2
Which appears in your answer list
Answer:
D
Step-by-step explanation:
If you are told that the slope is 2 that means that the equation cannot be A.
The slope is the number in front of the x. So far what you know is that
y = 2x + b
b is found from the given point.
- 7 = 2*(-8) + b Expand the right side
- 7 = - 16 + b Add 16 to both sides
- 7+16 = -16 + 16 + b
- 23 = b
answer y = 2x + 23
The answer is D
Answer:
y=13/3x-1
Step-by-step explanation:
k=(y2-y1) /(x2-x1)
A(0,-1) x1=0,y1=-1
B(3,12) x2=3, y2=12
k=(12-(-1))/(3-0)
k=(12+1)/3
k=13/3
y-y1=k(x-x1)
y-(-1)=13/3(x-0)
y+1=13/3*x
y=13/3*x-1
70%
A percentage is the same thing as a fraction with a denominator of 100. To make our current denominator change to 100, we must multiply it by 10. So, we must do the same thing to the numerator. 7 times 10 is 70, and 10 times 10 is 100. This means 7/10 equals 70/100, which is 70%.
We are given:
p = probability = 0.12<span>
n = total students = 39 </span>
x = left handers = 5<span>
u = mean = p* n = 4.68
σ = standard dev = √ ( n*p*(1-p)) = √ ( 39 * 0.12 * 0.88 ) =
2.03</span>
Calculating for the z score:
z = (x – u) / σ<span>
z = (5 – 4.68) / 2.03</span>
<span>z
= 0.1576 = 0.16
</span>
Using the standard tables for z, the p value is:
p value = 0.5636 = 56.36%
Hence there is a 56.36% chance.
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