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aivan3 [116]
2 years ago
14

Need help quick please. Find the area of the sector use 3.14 for pi

Mathematics
1 answer:
olga55 [171]2 years ago
7 0

\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360} ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=9\\ \theta =120 \end{cases}\implies \begin{array}{llll} A=\cfrac{(120)\pi (9)^2}{360}\implies A=27\pi \\\\\\ \stackrel{using~\pi =3.14}{A\approx 84.8} \end{array}

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If a car factory checks 320 cars and 12 of them have defects, how many out of 560 will have defects? Use proportions
Shkiper50 [21]

Answer:

  • Total number of cars having no defection = 539
  • Total number of cars out of 560 will have defects = 560 - 539 = 21

Step-by-step explanation:

As

  • A car factory checks 320 cars, and
  • 12 of them have defects.

Total number of cars = 560

The number of cars defected out of the cars that have

been checked = 320 - 12 = 308

The equation of the scenario will be:

\left[560\:\times \:308\right]\:\div \:320    ⇒    \frac{172480}{320}=539

so

  • Total number of cars having no defection = 539
  • Total number of cars out of 560 will have defects = 560 - 539 = 21
5 0
3 years ago
OMG SOMEONE ANSWER MY QUESTIONNN I ASKED IT 5 TIMES ALREADY AND NO ONE HAS ANSWERED
hram777 [196]
I believe it’s C, because in a recursive rule you must have (n-1), this shows that you’re using the previous term to solve for the next one.
7 0
4 years ago
What is the greatest common factor of the terms 14c to the second power D and 42 C to the third power d
irina [24]

Answer:


Step-by-step explanation:

To find the GCF we factor all the given terms and then find the Greatest Common Factor from both ,


So , The given two terms can be given by

14c^2d = 2.7.c.c.d\\42c^3d =2.3.7.c.c.c.d\\

Here common numbers that are in both are

2.7.c.c.d

so GCF= 14c^2d

7 0
3 years ago
Given m|n, find the value of x and y.
galben [10]

We know that m ║ n.

Let's first find the value 'x'.

When two lines are parallel, and a transversal is drawn, the angles on the same side of the transversal are equivalent.

This means that (5x + 16)° and (7x + 4)° are equivalent.

Equating them,

5x + 16 = 7x + 4

16 - 4 = 7x - 5x

12 = 2x

x = 12/2

x = 6°

Since we know the value of 'x', let's substitute them into the angles and find out the actual measurements.

5x + 16 = 5 × 6 + 16 = 30 + 16 = 46°.

7x + 4 = 7 × 6 + 4 = 42 + 4 = 46°.

Now let's find the value of 'y'.

If you observe carefully, (7x + 4)° and (y + 6)° form a linear pair.

This means that both those angles should add upto 180°.

Using that theory, the following equation can be framed:

(y + 6)°+ (7x + 4)° = 180°

Since we know the actual value of (7x + 4)°, let's substitute that value and move ahead.

(y + 6)° + 46° = 180°

y + 6 + 46° = 180

y + 52° = 180°

y = 180° - 52°

y = 128°

Therefore, the values of 'x' and 'y' are 46° and 128° respectively.

Hope it helps. :)

5 0
3 years ago
Can you help me solve this question
IRINA_888 [86]

Answer: Coordinates: (1,3) length RS: 3 length RT: 2 ST: 3.6

Step-by-step explanation:

a^2+b^2=c^2

3^2+2^2=c^2

9+4=c^2

13=c^2

3.6=c

3 0
2 years ago
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