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Dovator [93]
2 years ago
9

DREE POINTS!! If u answer my math questions correctly I’ll make another DREE points.

Mathematics
2 answers:
garri49 [273]2 years ago
6 0

Answer:

Just look it up. I checked and it shows all the correct answers.

Step-by-step explanation:

Alecsey [184]2 years ago
6 0
2) complementary
3) sin A= cos B
Sorry I don’t really know the answer to question 4 hope this helps :)
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The area of the cross section of a sphere at the largest point is 100π square miles. what is the total surface area of this sphe
Firlakuza [10]

The cross-section of a sphere  is a circle . The  area of a circle can be calculated by the formula A= \pi\r^{2} Where r is the radius of the circle.

Given :\pir^{2}   = 100\pi

Solving for r we have:

r^{2} = \frac{100\pi }{\pi}=   100

Or r= 10.

The area of a sphere is calculated by the formula :

SA = 4\pi  R^{2}

Substituting r value we have:

SA= 4\pi\ 10 ^{2}    = 400\pi

The total surface area of this sphere is 400π .

4 0
3 years ago
If a person tosses a coin 23 times, how many ways can he get 11 heads
EastWind [94]

Tossing a coin is a binomial experiment.

Now lets say there are 'n' repeated trials to get heads. Each of the trials can result in either a head or a tail.

All of these trials are independent since the result of one trial does not affect the result of the next trial.

Now, for 'n' repeated trials the total number of successes is given by

_{r}^{n}\textrm{C}

where 'r' denotes the number of successful results.

In our case n=23 and r=11,

Substituting the values we get,

_{11}^{23}\textrm{C}=\frac{23!}{11!\times 12!}

\frac{23!}{11!\times 12!}=1352078

Therefore, there are 1352078 ways to get heads if a person tosses a coin 23 times.


3 0
3 years ago
The sequence below shows the
serious [3.7K]

Answer:

Step-by-step explanation:

Option B 2. Now is the correct answer because when we multiply 6 by 2 we get 12 then we multiply 12 by 2 we get 24

8 0
3 years ago
Ms. Warren had each student take 3 pencils and create a triangle with them. Roberto has 3 pencils that measure 12 cm, 5 cm, and
cestrela7 [59]

Answer:

One.

Step-by-step explanation:

The reason why is because 12-5 = 7, meaning that your lowest length has to be 7. meaning, that you can only do one triangle.

7 0
3 years ago
Read 2 more answers
If x = 7+3 root 5 by 7 - 3 root 5 , find the value of x^2 + 1 by x^2
Vesnalui [34]

Answer:

6 because why not

Step-by-step explanation:

6 0
3 years ago
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