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Marina CMI [18]
3 years ago
9

Ten of 16 students in Nyack's class are girls. His teacher selected two helpers by randomly drawing names. He drew a boys name f

irst and then a girls names. Nyack thinks that the probability of this happening is 15/64. Is he correct? If not, Explain his error.
Mathematics
1 answer:
katrin [286]3 years ago
7 0

|\Omega|=16\cdot15=240\\|A|=6\cdot10=60\\\\P(A)=\dfrac{60}{240}=\dfrac{1}{4}

He's wrong.

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W • (-4+ z) = mz + 17
Setler [38]

Answer:

z =  (17+4w)/(w-m)

Step-by-step explanation:

w • (-4+ z) = mz + 17

Distribute

-4w +wz = mz+17

Subtract mz from each side

-4w +wz - mz = mz+17-mz

-4w +wz-mz = 17

Add 4w to each side

-4w +4w+wz-mz = 17+4w

wz-mz = 17+4w

Factor out z

z(w-m) = 17+4w

Divide by (w-m)

z(w-m)/(w-m) = (17+4w)/(w-m)

z =  (17+4w)/(w-m)

3 0
3 years ago
What were some provisions of the Dred Scott case? Select three responses
aleksley [76]

Answer:

Following were the provisions of Dred Scott case:

  1. No black person, free or enslaved, could be a US citizen.
  2. There could be no legal ban on slavery on the territories.
  3. The Missouri Compromise was unconstitutional.

Step-by-step explanation:

Dred scott was the slave of an army surgeon. He accompanied his owner to Illinois, which had become a free state at that time. However, he later returned back to Missouri, which was a slave state. In 1846, Dred Scott sued for their freedom in a St. Louis court. According to him, as he had been living in a free state for some time, he should be freed from the slavery.

After 11 years, Dred Scott's case eventually reached the US Supreme court, which ruled against him.  

7 0
3 years ago
Read 2 more answers
What's the intercepts for the equation 4x-6y-5z=60?
Rudik [331]
To find the x_i intercept, set x_j=x_k=0. By this I refer to the following procedure.

x-intercept: Set y=z=0, then you're left with 4x=60\iff x=15. Then the x-intercept is (15,0,0).

y-intercept: Set x=z=0, then -6y=60\iff y=-10. The y-intercept is (0,-10,0).

z-intercept: Set x=y=0, then -5z=60\iff z=-12. The z-intercept is (0,0,-12).
5 0
3 years ago
What is the measurement of the vertex angle of an isosceles triangle if one of its base angles measures 42 degree
kari74 [83]

Hello from MrBillDoesMath!

Answer:

96 degrees


Discussion:

The base angles of an isosceles triangle are equal and a triangle has 180 degrees. In our case this means that


42 + 42 + (measure of vertex angle) = 180

84 + (measure of vertex angle)  = 180 =>     (subtract 84 from both sides)

84 - 84 +  (measure of vertex angle)  = 180- 84 =>  

(measure of vertex angle)  = 180- 84  = 96

Thank you,

MrB

3 0
3 years ago
El precio de una pasta de dientes subió en un 73%. Si su precio original es de 1650 pesos. Para calcular su precio final debo ap
Softa [21]

Answer:

Sorry I wish I could help but the question is confusing.

Step-by-step explanation:

5 0
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