All categories

2 years ago

Find the area of the shaded regions.

Mathematics

1 answer:

Simora [160]2 years ago

4 0

Answer:

125.66

Step-by-step explanation:

Area of shaded sector=

A=(angle/360) * pi * radius squared

(72/360) * pi * 10squared

62.83 * 2 = 125.66 because there are 2 shaded areas

You might be interested in

A canister contains 12 ounces of flour. When the canister is full, it holds 6 times as much flour.

RSB [31]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The height of a right triangle is √6 units and the base is √9 units. Find the area of the triangle

In-s [12.5K]

Answer:

Step-by-step explanation:

h = √6 units

b = √9 units

A = b*h/2 = √6·√9 /2 = √(6·9)/2 = √(2·3·3·3)/2 = 3√3 /2 units ²≈ 2.6 units²

3 0

2 years ago

A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua

frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a) $y = a+bx$

$b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} = \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300$

$a=y-bx = 47200-(15300 \times 29) = 2830$

So, slope = 15300

Intercept = 2830

So, equation : $y = 2830+15300x$

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

$y = 2830+15300 \times 3.3 = 53320$

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = $r^2 = (0.72)^2 =0.5184$

8 0

3 years ago

120% of which is 480. I write what i know but i dont know what going on next, maybe I write wrong haha Improve me

Ilia_Sergeevich [38]

I’m pretty sure The answer is 1.2

8 0

2 years ago

Which graph represents the function below? (The first pic is the function, the others are the graph choices given)

Bumek [7]

Answer:

The First Graph

Step-by-step explanation:

The -x line is present in both the first and last graph.

The x + 6 is present in the first and second graph.

The slope is increasing before -3

The slope past -3 is decreasing.

3 0

3 years ago

Find the area of the shaded regions.​

Find the area of the shaded regions.