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4 years ago

(PLEASE ANSWER + BRAINLIEST ANSWER!!)

Mathematics

2 answers:

murzikaleks [220]4 years ago

8 0

The arc length, radius and the included angle are related as

$r\theta=\widehat {XYZ}$ where $\theta$ is in radians.

The radius $r$ is given by

$r=\frac{\widehat {XYZ} }{\theta} \\ r=\frac{10.8}{1.8} \\ r=6\;units$

Correct choice is (B).

Aleksandr-060686 [28]4 years ago

6 0

B is the answer hope this helps and please mark me as brainliest

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A recipe calls for 2 pounds of pasta for 15 servings. How many pounds needed for 40 servings

Likurg_2 [28]

Answer: 5 and 1/3 pounds of pasta

Step-by-step explanation:

3 0

3 years ago

Determine which ordered pairs fall on the graph of f(x) = -2x-1

Pavlova-9 [17]

Answer:

No order Pair fall on the graph

Step-by-step explanation:

The given Function is

$f(x)= -2x -1$ ...............(i)

Now to see whether these ordered pairs Lay on it we will put each ordered pair in the equation (i)

Lets take first ordered pair (1,1)

here x = 1

putting it in (i) gives

$f(1)= -2(1) -1$

$f(1)= -3$

this is not equal to 1 so the order pair (1,1) does not fall on function $f(x)= -2x -1$

Lets take second ordered pair (-1,-4)

here x = -1

putting it in (i) gives

$f(-1)= -2(-1) -1$

$f(-1)= 1$

this is not equal to -4 so the order pair (-1,4) does not fall on function $f(x)= -2x -1$

Lets take third ordered pair (-2,-1/8)

here x = -2

putting it in (i) gives

$f(-2)= -2(-2) -1$

$f(-2)= 3$

this is not equal to -1/8 so the order pair (-2,1/8) does not fall on function $f(x)= -2x -1$

Lets take fourth ordered pair (0,-1/2)

here x = 0

putting it in (i) gives

$f(0)= -2(0) -1$

$f(0)= -1$

this is not equal to -1/2 so the order pair (0,-1/2) does not fall on function $f(x)= -2x -1$

3 0

4 years ago

The mean absolute deviation for each pizzeria is approximately 10. Approximately how many times the mean absolute deviation is t

bulgar [2K]

Answer:31

Step-by-step explanation:

6 0

3 years ago

Mathematicians 4: Who is Who?

larisa86 [58]

Answer:

a. x = -9 or x = -2

b. -5(x - 4)

c. x = -3 or x = 5

d. x = ±7

Step-by-step explanation:

a. First person;

y = x² + 11x + 18

y = x² + 9x + 2x + 18

y = x(x + 9) + 2(x + 9)

y = (x + 9)(x + 2)

y = x = -9 or x = -2

b. Second person;

y = -5x + 20

The common factor is 5.

y = -5(x - 4)

c. Third person;

y = x² - 2x - 15

y = x² - 5x + 3x - 15

y = x(x - 5) + 3(x - 5)

y = (x + 3)(x - 5)

y = x = -3 or x = 5

d. Fourth person;

y = x² - 49

Applying the difference of squares formula;

(a² - b²) = (a - b)(a + b)

y = x² - 49 = x² - 7² = (x - 7)(x + 7)

y = (x - 7)(x + 7)

y = x = ±7

6 0

3 years ago

A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four y

krek1111 [17]

Complete question:

A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four years to failure and irrelevant board burn-in period. He wants to testthe system and complete data collection. Find the probability that one of these washing machines will have a life that ends: (Note you can find the reliability of the washing machine life)

a) After an initial four years of washing machine service

b) Before four years of washing machine service are completed

c) Not before six years of washing machine service.

Answer:

a) 0.3679

b) 0.6321

c) 0.2231

Step-by-step explanation:

Given:

Mean, u= 4

/\ = 1/u

= 1/4 = 0.25

The cummulative distribution function, will be:

For x≥0,

$F(x) = 1 - e^-^0^.^2^5^X$

$P(x$

a) After an intial four years:

$P(x>4) = 1-(1-e^-^0^.^2^5^*^4^.^0)$

P(x>4) = 0.3679

b) Before four years:

$P(x$

P(x<4) = 0.6321

c) Not before 6 years:

$P(x>6) = 1-(1-e^-^0^.^2^5^*^4^.^0)$

P(x>6) = 0.2231

5 0

3 years ago