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musickatia [10]
3 years ago
7

Due to concerns about the underinflation of footballs, the National Football League (NFL) created a series of standards that mus

t be met for the weight, length, and the long and short circumferences of each ball. It is stated that the balls are to be inflated to between 12.5 to 13.5 pounds. The pressure output by the ball pump is approximately Normal with a mean of 13 pounds and a standard deviation of 0.25 pounds. At each game, the home team must supply 12 balls to the referee 2 hours and 15 minutes prior to the start of the game for inspection.
(a) What is the probability that a randomly selected ball will not meet the inflation specifications?
Mathematics
1 answer:
marshall27 [118]3 years ago
6 0

Answer: 13.5/12.5

Step-by-step explanation:

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Larry bought 24 marbles little lost half of his marbles how many did he lose​
emmasim [6.3K]

Answer:

12

Step-by-step explanation:

his he had lost 12 of his marbles then he would only have 12 left to begin with.

to do this we can do the equation:

24/0.5 (the 0.5 is the represent that the 24 marbles had been split into two, a half for each party)

this would then give use our quotient of 12 marble he had lost

3 0
3 years ago
The Schwartz family spent a total of $111.75 for Internet service for 3 months. Each month they received $5.50 as a credit on th
Alexus [3.1K]

Answer:

3 (x + 5.50) = 111.75; the monthly Internet service is $31.75

Step-by-step explanation:

Let

x = monthly cost of internet service

Each month they received $5.50 as a credit on the bill.

The Schwartz family spent a total of $111.75 for Internet service for 3 months.

Total cost of internet service for three months = 3(x + 5.550)

111.75 = 3(x + 5.50)

111.75 = 3x + 16.50

111.75 - 16.50 = 3x

95.25 = 3x

x = 95.25 / 3

= 31.75

x = $31.75

4 0
3 years ago
Read 2 more answers
What is the sum of the given polynomials in standard form? (x2 – 3x) + (–2x2 + 5x – 3)
LekaFEV [45]

Answer:

-x² + 2x - 3

Step-by-step explanation:

Simply combine like terms together.

x² terms are added together

x terms are added together

Constants are added together

7 0
3 years ago
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What is the equation of the line that is perpendicular to the given line and passes through the point (3, 0)?
olga2289 [7]

Step 1

<u>Find the slope of the given line</u>

Let

A(-3,2)\ B(2,-1)

slope mAB is equal to

mAB=\frac{(y2-y1)}{(x2-x1)} \\ \\ mAB=\frac{(-1-2)}{(2+3)} \\ \\ mAB=-\frac{3}{5}

Step 2

<u>Find the slope of the line that is perpendicular to the given line</u>

Let

CD ------> the line that is perpendicular to the given line

we know that

If two lines are perpendicular, then the product of their slopes is equal to -1

so

mAB*mCD=-1\\ mAB=-\frac{3}{5} \\ mCD=-\frac{1}{mAB} \\ mCD=\frac{5}{3}

Step 3

<u>Find the equation of the line with mCD and the point (3,0)</u>

we know that

the equation of the line in the form point-slope is equal to

y-y1=m(x-x1)\\\\ y-0=\frac{5}{3} *(x-3)\\\\ y=\frac{5}{3} x-5

Multiply by 3 both sides

3y=5x-15

5x-3y=15

therefore

the answer is

the equation of the line that is perpendicular to the given line is the equation 5x-3y=15

4 0
2 years ago
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Write an algebraic expression to represent each scenario.<br><br> Part A: “the sum of 6 and y”
Nostrana [21]

Answer:

6 + y

Step-by-step explanation:

Here, we want to write an algebraic expression to represent the situation

Mathematically, we want to add 6 and y

The algebraic expression will be;

6 + y

3 0
3 years ago
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