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Mazyrski [523]
3 years ago
14

There are seven boys and seven girls in a class. The teacher randomly selected one student to answer a question. Later, the teac

her randomly selects a different student to answer another question. The first student it's a boy and the second is is a girl.
Independent or dependent?
Mathematics
2 answers:
Ksju [112]3 years ago
8 0
The answer is independent. hope it helps
alukav5142 [94]3 years ago
7 0
Independent!!!!!!!!!!!!!!!!!!!!!!!
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Solve h = −16t2 + 36t + 4.
kvasek [131]
I can do each of the things I asked above.
So, let's change this into vertex form:
h=-16t^2+36t+4
h=(-16t^2+36t)+4
h=-16(t^2-2.25t)+4
h=-16(t^2-2.25t+1.27-1.27)+4
h=-16(t^2-2.25t+1.27)+20.32+4
h=-16(t-1.125)^2+24.32
The vertex is at (1.125,24.32)
<span>Answers may vary due to rounding

</span>Factored Form:
h = -16t^2 + 36t + 4
h = -4\left(4t^2-9t-1\right)

Quadratic Formula:
x =  \frac{-b +/- \sqrt{b^2-4(a)(c)}}{2a}
<span>h = -16t^2 + 36t + 4
</span>a = -16 b = 36 c = 4
h = \frac{-(36) +/- \sqrt{(36)^2-4(-16)(4)}}{2(-16)}
h = \frac{-36 +/- \sqrt{1552}}{-32}
h = ≈-0.11
h = ≈2.36

5 0
3 years ago
London Heathrow airport sees on average 191,200 passengers a day. How many passengers is this per minute?
taurus [48]
Divide it by 24 then that answer is divided by 60 to get 132.7777 which you can have so 133 people per minute
7 0
3 years ago
A factory makes cars at a constant rate. The table shows the number of car’s made for different length’s of time. A manager draw
blagie [28]

Answer:

im not sure if this is right or not but i did the math and got 26

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
The revenue for a company producing widgets is given by y = -20x2 - 50x + 200, where x is the price in dollars for each widget.
lisov135 [29]

Answer:

The  price is   x =  $2.779

Step-by-step explanation:

From the question we are told that

  The  revenue is  y = - 20x^2  - 50 x + 200

   The cost of production is  y = 30 x - 10

Generally at break even point the cost of production is equal to the  revenue

So

      -20x^2 -50x + 200 =  30x-10

=>   20x^2 +20 -210 = 0

Using the quadratic formula to solve this equation we have that

       x =  $2.779

     

6 0
3 years ago
Read 2 more answers
A phone sells for $700. It is now on sale for 1/5 off the
Leona [35]

\text{Find how much she was discounted:}\\\\\text{We know that the base price of the phone is 700}\\\\\text{It's on sale for 1/5 of the price (20\%), so multiply 700 by 0.20 and subtract}\\\\700*0.20=140\\\\700-140=560\\\\\text{Now, we know that there's a 10\% discount off the sale price, so precede}\\\text{with the same steps}\\\\560*0.10=56\\\\560-56=504\\\\\text{To find total discount price, subtract 504 from the original price}\\\\700-504=196\\\\\boxed{\$196}

5 0
2 years ago
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