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kiruha [24]
3 years ago
12

Pls help. I’m so confused

Mathematics
2 answers:
OLEGan [10]3 years ago
8 0

Answer:

25

Step-by-step explanation:

Used an online triangle calculator<3 lol

dusya [7]3 years ago
5 0

Answer:

25 units

Step-by-step explanation:

The longest side is 12.

The two other sides of the triangle = (3 sqaured + 6 squared) (9+36) the square root of 45 is about 6.7.

6.7 x 2 = 13.4

13.4 + 12 = 25.4

25.4 rounded to the nearest unit is 25

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a coin will be tossed 10 times. Find the chance that there will be exactly 2 heads among the first five tosses and exactly 4 hea
777dan777 [17]

Answer:

The chance that there will be exactly 2 heads among the first five tosses and exactly 4 heads among the last 5 tosses is P=0.0488.

Step-by-step explanation:

To solve this problem we divide the tossing in two: the first 5 tosses and the last 5 tosses.

Both heads and tails have an individual probability p=0.5.

Then, both group of five tosses have the same binomial distribution: n=5, p=0.5.

The probability that k heads are in the sample is:

P(x=k)=\dbinom{n}{k}p^k(1-p)^{n-k}=\dbinom{5}{k}\cdot0.5^k\cdot0.5^{5-k}

Then, the probability that exactly 2 heads are among the first five tosses can be calculated as:

P(x=2)=\dbinom{5}{2}\cdot0.5^{2}\cdot0.5^{3}=10\cdot0.25\cdot0.125=0.3125\\\\\\

For the last five tosses, the probability that are exactly 4 heads is:

P(x=4)=\dbinom{5}{4}\cdot0.5^{4}\cdot0.5^{1}=5\cdot0.0625\cdot0.5=0.1563\\\\\\

Then, the probability that there will be exactly 2 heads among the first five tosses and exactly 4 heads among the last 5 tosses can be calculated multypling the probabilities of these two independent events:

P(H_1=2;H_2=4)=P(H_1=2)\cdot P(H_2=4)=0.3125\cdot0.1563=0.0488

7 0
3 years ago
|-10| |11| less,greater than
timurjin [86]
|-10| is less than |11|
3 0
3 years ago
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Simplify the expression by combining like terms:<br> 5c2 + 13c + 4 – 7c + 9
PIT_PIT [208]

Answer:

5c^2 +6c +13

Step-by-step explanation:

so we can see than 5c^2

and 13c - 7c are the same = 6c

and 4 +9 = 13

so answer will 5c^2 +6c +13

3 0
3 years ago
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Tiffiny ate 1 slice of cake. Omer ate 2 slices. If Tiffiny ate 1/5 of the cake and all the slices were the same size, what fract
Nutka1998 [239]
2/5 of the cake are left. Tiffany ate 1/5 and Omer ate 2x the amount, which is 2/5.
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3 years ago
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Mr. Sanford left half of his fortune to April, his daughter. He left of the remaining half to his uncle Jed. He left half of the
sergeinik [125]

Answer:

40 is the full amount

Step-by-step explanation:

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