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atroni [7]
3 years ago
11

What's the answer to these simple algebra questions.

Mathematics
1 answer:
Olegator [25]3 years ago
5 0

Answer:

z = \frac{979}{5} or z = 195.8

y=-30

a = 5

b = -7

x = 64

Step-by-step explanation:

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Find the area of the shade regions. Give your answer as a completely simplify exact value in terms of pie(no approximation). a=
mr Goodwill [35]

Answer:

<u>125.6 in²</u>

Step-by-step explanation:

Area shaded :

  • 2 × Sector (72°)
  • 2 x πr² x θ/360
  • 2 x 3.14 x 100 x 72/360
  • 6.28 x 100 x 1/5
  • 20 x 6.28
  • <u>125.6 in²</u>
4 0
2 years ago
Julio checked the temperature of a bag of frozen peas and found it was at −12°C. After he left the bag out of the freezer for an
andrey2020 [161]

The temperature increased by 19°C

6 0
3 years ago
4. Two more than a certain number is 15 less<br> 7<br> 8<br> than the product of and the number.
Serggg [28]

<u>Answer</u><u>:</u>

Equation: x + 2 = 7/8x - 15

Solution: x = -136

<u>Explanation</u><u>:</u>

x + 2 = 7/8x - 15

2 + 15 = 7/8x - x

17 = 7/8x - 8/8x

17 = -1/8x

17 × -8 = x

-136 = x

4 0
3 years ago
What are the zeros of this function
Anestetic [448]

Answer:

X =3 and x =6

Step-by-step explanation:

Just look at the line where they cross another line,

4 0
3 years ago
Read 2 more answers
Let us analyze the following setting. You are given a circle of unit circumference. You pickkpoints on the circle independently
garik1379 [7]

Answer:

We have been given a unit circle which is cut at k different points to produce k different arcs. Now we can see firstly that the sum of lengths of all k arks is equal to the circumference:

\small \sum_{i = 1}^{k} L_i= 2\pi

Now consider the largest arc to have length \small l . And we represent all the other arcs to be some constant times this length.

we get :

 \small \sum_{i = 1}^{k} C_i.l = 2\pi

where C(i) is a constant coefficient obviously between 0 and 1.

\small \sum_{i = 1}^{k} C_i= 2\pi/l

All that I want to say by using this step is that after we choose the largest length (or any length for that matter) the other fractions appear according to the above summation constraint. [This step may even be avoided depending on how much precaution you wanna take when deriving a relation.]

So since there is no bias, and \small l may come out to be any value from [0 , 2π] with equal probability, the expected value is then defined as just the average value of all the samples.

We already know the sum so it is easy to compute the average :

\small L_{Exp} = \frac{2\pi}{k}

7 0
3 years ago
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