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aliina [53]
3 years ago
7

What's the difference?

Mathematics
2 answers:
Ad libitum [116K]3 years ago
3 0
In -2xx^{2}, the exponent will be dealt with first. With (-2x)^{2}, the multiplication is going to be done first. This is determined because of Order of operations.
galina1969 [7]3 years ago
3 0
All I know is
(-2x)2= 4x
-2x2= -4x
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Plz tell formula of Cotθ plz fully explain
Ad libitum [116K]

Answer:

1. cos(2π + θ) = cosθ

2. tan(2π + θ) = tanθ, cot(2π + θ) = cotθ.

explanation:

cot(2π + θ) = cotθ. The Trigonometric ratios of angle 2π - θ: Thinking of θ as an acute angle, 2π -θ ends in the 4th Quadrant where only cosine is positive. 2π -θ means going 1 full turn from A to A and then returning to the M' that means as much as θ.

4 0
3 years ago
Read 2 more answers
Let A and B be mutually exclusive events with PA) = 0.20 and PCB) = 0.30.
Mama L [17]
That would be approximately five hours of president and president of president and internet president of national president
7 0
3 years ago
Factor the following quadratic expression x^2 + 14x + 24
babymother [125]

Answer:

x^2+14x+24 = x^2+12x+2x+24 = (x+12)(x+2)

Write the remaining ones as it is

Hope this helps!

3 0
3 years ago
Read 2 more answers
Part I Instructions: You just started a job at John F. Kennedy Airport. You were hired as a customer service representative and
Verizon [17]
Wouldn't it be B every 10 minutes.
4 0
3 years ago
A city planner wants to estimate, with a 99% confidence level, the average monthly residential water usage in the city. Based on
torisob [31]

Answer: 82

Step-by-step explanation:

The formula to find the sample size is given by :-

n= (\dfrac{z^*\cdot \sigma}{E})^2

, where E = Margin of error.

\sigma = Population standard deviation for the prior study.

As per given , we have

\sigma=387.40 gallons.

Margin of error : E= 110 gallons

Critical value for 99% confidence level = z* = 2.576

Then, the required sample size : n= (\dfrac{(2.576)\cdot (387.40)}{110})^2

n= (9.07220363636)^2\approx82  {Rounded to the nearest integer.}

Hence, the minimum sample size = 82

3 0
3 years ago
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