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Andru [333]
2 years ago
11

Find the area of this circle. Use 3.14 to approximate Pi

Mathematics
1 answer:
bekas [8.4K]2 years ago
6 0

\pi {r}^{2} \\  \:  \:  \:  \:  \:  \:  = 3.14 \times 13 {cm}^{2}  \\  = 530.66 {cm}^{2}

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Among 35 students in a class, 20 of them earned A's on the midterm exam, 13 earned A's on the nal exam, and 12 did not earn A's
enyata [817]

Answer:

The correct answer is "\frac{2}{7}".

Step-by-step explanation:

According to the question,

Number of students,

= 35

A ! mid term A,

n(A) = 20

B : final A,

n(B) = 13

Didn't start,

n(A^c \cap B^c) = 12

Now,

⇒ n(A \cup B)=35-12

                   =23

then,

⇒ n(A \cup B)=20+13-23

                   =10

hence,

The probability will be:

⇒ P(A \cap B)=\frac{10}{35}

⇒                 =\frac{2}{7}

7 0
3 years ago
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Gwar [14]

Answer:

20%

Step-by-step explanation:

4/20 = x/100

100*4 =400

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so

4/20 = 20/100

8 0
3 years ago
Read 2 more answers
Write the number below as a fraction in its simplest form<br> 0.41 recurring
Tomtit [17]

Answer:

12

Step-by-step explanation:

3 0
3 years ago
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An acute angle ? is in a right triangle with cos ? = nine tenths. what is the value of sec ?? square root of nineteen divided by
Anon25 [30]
What...................................numberxs
6 0
3 years ago
Andrea
maksim [4K]

Answer:

a. Andrea is incorrect

b. By solving for x, we find that x does not equal 8, but it is equal to 7.

Step-by-step explanation:

8+4=2(x-1)

8+4=2x-2

12=2x-2

14=2x

x=7

4 0
3 years ago
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