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PolarNik [594]
3 years ago
6

(b)

Mathematics
1 answer:
ElenaW [278]3 years ago
7 0

Answer:

Step-by-step explanation:

a) r = √(1² + (-5²)) = √26 = 5.09901...

   θ = tan⁻¹(-5/1) = 4.9097... radians

   (5.1, 4.9)

b) r = - 5.09901...

   θ = 4.9097... - π = 1.76819...

   (-5.1, 1.8)

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Now just 2. Thank you
Levart [38]
The correct choice is B 
x is greater than equals to -4.25
8 0
3 years ago
Solve by Elimination: <br> x + 6y = 28<br> 2x - 3y = -19
SIZIF [17.4K]

Answer:

x=-2

y=5

Step-by-step explanation:

x=28-6y

2x-3y=-19

(substitute the value of x)

2(28-6y)-3y=-19

y=5

x=28-6*5

x=-2

3 0
3 years ago
Here is a quote from an NPR news article: "On average, working-age adults were eating about 78 fewer calories per day in 2010, c
s2008m [1.1K]

Answer:

The answer is "Option d".

Step-by-step explanation:

It involves the use of quantitative templates, diagrams, or summaries in such a given set of experimental data or real-liability for research. This research method is used for gathering, analyzing, assessing, or making judgments.  

  • The statistics are mostly a summary description and the entire nation is represented in a parameter.
  • It is 78 figure is a statistical figure based on a survey of 10,000 people, that's why choice d is correct.
8 0
3 years ago
Calculate. If possible, reduce your answers. 12+3·(11−15) =
katrin [286]

Answer:

60

Step-by-step explanation:

(11−15) = 4

12+3=15

15x4=60

6 0
3 years ago
HELP, I’M STUCK !
vaieri [72.5K]

Since P(<em>X</em> = <em>x</em>) = 0.3 for all 0 ≤ <em>x</em> ≤ <em>α</em>, we have

\displaystyle\int_{-\infty}^\infty P(X=x)\,\mathrm dx=1\implies0.3\int_0^\alpha\mathrm dx=0.3\alpha=1\implies\alpha=\dfrac{10}3

So,

P(X>2) = \displaystyle\int_2^\infty P(X=x)\,\mathrm dx=0.3\int_2^{\frac{10}3}\mathrm dx

P(X>2)=0.3\left(\dfrac{10}3-2\right)=\boxed{\dfrac25}

6 0
3 years ago
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