MATHEMATICS HIGH SCHOOL

What is the exact area of a circle whose diameter is 14 cm?A.
14 straight pi cm2

B.
28 straight pi cm2

C.
49 straight pi cm2

D.
196 straight pi cm2

Answers

Answer 1
Answer: Ok so the formula for the area of a circle is pi r2 so first the radius half of 14 is 7 so 7 squared would be 49 so it would be C. and if you wanted to get the estimation you would just multiply pi to 49 I hope this helps :) 

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What is the value of | –29 |?A.
29

B.
–29

think its A=29

Answers


Yep its A) 29

because that symbol is the absolute value symbol meaning its is always turned into a positive.
Yes it is A.29 becouse | | symbol value

3m(2m+9)=0 what is the factor of m

Answers

3m(2m+9)=0 \n \n3m=0 \ \ \vee \ \ 2m+9 = 0\n \n m=0 \ \ \vee \ \ 2m= -9 /:2\n \nm=0 \ \ \vee \ \ m= -(9)/(2) \n \nm=0 \ \ \vee \ \ m= -4(1)/(2)

Emily has 12 fruits in her bowl. She has 3 apples, 5 bananas, 1 pear and 3 oranges. A fruit is selected at random. What is the probability that the fruit is an orange or a pear? A. 56 B. 23 C. 12 D. 13

Answers

Answer: The probability that the fruit is an orange or a pear is (1)/(3) .

Step-by-step explanation:

Given : Emily has 12 fruits in her bowl.

She has 3 apples, 5 bananas, 1 pear and 3 oranges.

A fruit is selected at random.

P(orange)  = \frac{\text{Number of oranges}}{\text{Total fruits}}

=(3)/(12)

P(pear)= \frac{\text{Number of pears}}{\text{Total fruits}}

=(1)/(12)

Since both events of selecting orange and pear are mutually exclusive , so

The probability that the fruit is an orange or a pear = P(orange) + P(pear)

=(3)/(12)+(1)/(12)=(4)/(12)=(1)/(3)

Therefore , the probability that the fruit is an orange or a pear is (1)/(3) .

Which of the following is Avogadro's number? A. 2.063 x 10^23 B. 6.023 x 10^22 C. 6.022 x 10^23 D. 2.063 x 10^22

Answers