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nlexa [21]
3 years ago
7

PLEASE HELP ME ON THIS ONE​

Mathematics
2 answers:
saveliy_v [14]3 years ago
8 0

Step-by-step explanation:

7×4=28. 3×14=42. the area is 70. 28+42=70. my guess

dalvyx [7]3 years ago
5 0

Answer:

Total area = 70 sq. km

Step-by-step explanation:

We can make it into 2 parts.

Down part)

It is rectangle ;length = 14 km

width = 3 km

Area = length * width

         = 14 * 3 = 42 sq. km

Above part)  It is rectangle

length = 7 km

width = 4km

Area = length * width

          = 7 * 4

           = 28 sq. km

Total area = 42 + 28 = 70 sq. km

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Saul is playing a game using a wheel divided
Art [367]

Using the binomial distribution, it is found that there is a 0.25 = 25% probability he will land on A on the first spin and A and the second.

For each spin, there are only two possible outcomes, either it lands on Sector A, or it does not. The results of each spin are independent, hence, the binomial distribution is used to solve this question.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem, we have that:

  • The sectors are equal, which means that it is equally as likely to land on each, hence p = \frac{1}{2} = 0.5.
  • Saul will spin the wheel twice, hence n = 2.

The probability that both land on A is P(X = 2), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{2,2}.(0.5)^{2}.(0.5)^{0} = 0.25

0.25 = 25% probability he will land on A on the first spin and A and the second.

You can learn more about the binomial distribution at brainly.com/question/24863377

4 0
2 years ago
What is the mass of a copper (II) chloride sample if it contains 0.0344 moles of the compound?
ale4655 [162]

According to the valence number of copper(2+) and the same value for chlorine (1-) copper (II) chloride has the formula of CuCl2

The molar mass of copper is 0,0635 kg/mole and chlorine gas a molar mass of 0,035 kg/mole the compound will have a molar mass of ( 0,0635+2×0,035 )kg/mole=0,099kg/mole and 0,344 moles are equivalent in mass to 0,344×0,135 kg=0,046 kg

5 0
2 years ago
What is the slope of the line that passes through the points (1, 7) and (–4, –8)?
Igoryamba
The first question answer is A
The second question answer is B
7 0
3 years ago
Seth orders 5 supreme pizzas for his video game party. His total bill, including a $3.00 delivery charge and a $7.00 tip, is $64
almond37 [142]
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6 0
3 years ago
Read 2 more answers
Luis quiere saber que distancia recorre su bicicleta cada vez que sus llantas dan 5 vueltas completas . Si una llanta mide 55 cm
GenaCL600 [577]

Answer:

864 cm

Step-by-step explanation:

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Diámetro = 55 cm

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Circunferencia = π × (55cm × 5)

= 863,93797974 cm

Aproximadamente = 864 cm

3 0
3 years ago
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