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zhuklara [117]
3 years ago
13

What is the mean number of vehicles owned by the families in Class A? Explain or show how you arrived at your answer.

Mathematics
1 answer:
Pani-rosa [81]3 years ago
4 0

Answer:

  1 5/11 ≈ 1.455

Step-by-step explanation:

The total number of vehicles owned is

  (4×0 + 8×1 + 6×2 + 4×3) = 32

The total number of families is ...

  4 + 8 + 6 + 4 = 22

Then the mean number of vehicles per family is ...

  32/22 = 16/11 ≈ 1.455

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Which of the following is the solution set of x² + 8x + 12 = 0?
raketka [301]

Answer:

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Step-by-step explanation:

Given:

x^{2} + 8x + 12 = 0

Solve for:

x

Solution:

Step 1: Select the formula to solve for x

There are some ways to solve quadratic equations.

One of the simple way (if possible) is performing the factorization.

Another way is using the quadratic formula.

Here, we are going to use factorization.

Step 2: Perform factorization

      x^{2} + 8x + 12 = 0

<=>x^{2}  +  2x + 6x  + 12 = 0

<=>(x^{2} + 2x) + (6x + 12) = 0

<=>x(x + 2) + 6(x + 2) = 0

<=>(x + 2)(x + 6) = 0

<=> x = -2 or x = -6

Hope this helps!

:)

4 0
2 years ago
a munfuctor of medical supplies produces 1 liter of bags of saline solution. the cost to produce x thousand bags of saline is gi
o-na [289]
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8 0
3 years ago
A psychologist takes an SRS of 404040 people in their twenties and 606060 people in their fifties and surveys them about their a
Leto [7]

Answer: Approximately normal, because we expect 19.2 successes and 20.8 failures from people in their twenties, and 16.8 and 43.2 from people in their fifties, and all of these counts are at least 10.

Step-by-step explanation:

3 0
2 years ago
Solve 1.3 - 5g = 7.4 Show all work and check the solution
Ronch [10]

Answer:

1.22

Step-by-step explanation:

  1. Subtract 1.3 from each side, so it now looks like this: 5g = 6.1
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I hope this helps!

8 0
3 years ago
Read 2 more answers
Solve the equation 7 − 2x = 19.
Karolina [17]

Answer:

-6

Step-by-step explanation:

firstly arrange whole equation,

-2x+7=19

Now, Transpose 7 to RHS (right hand side)

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Further, seperate coefficient -2 from x

and transpose it to RHS and divide them

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3 years ago
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