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1 year ago

I need help on this ? Please answer in the next couple minutes

Mathematics

1 answer:

Mila [183]1 year ago

7 0

Answer:

Dino's: 1 sandwich = 4, 2 sandwiches= 4 *2 = 8, 3 sandwiches = 4 * 3 = 12, 4 sandwiches = 4 * 4 = 16

Carla's: 1 sandwich = 8, 2 sandwiches= 8 *2 = 16, 3 sandwiches = 8 * 3 = 24, 4 sandwiches = 8 * 4 = 32

Step-by-step explanation:

multiply the quantity of sandwiches by the price per each sandwich and you get your answers.

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Suppose that an airline uses a seat width of 16.5 in. Assume men have hip breadths that are normally distributed with a mean of

Alexxx [7]

Answer:

a) 0.018

b) 0

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 14.4 in

Standard Deviation, σ = 1 in

We are given that the distribution of breadths is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(breadth will be greater than 16.5 in)

P(x > 16.5)

$P( x > 16.5) = P( z > \displaystyle\frac{16.5 - 14.4}{1}) = P(z > 2.1)$

$= 1 - P(z \leq 2.1)$

Calculation the value from standard normal z table, we have,

$P(x > 16.5) = 1 - 0.982 = 0.018 = 1.8\%$

0.018 is the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.5 in.

b) P( with 123 randomly selected men, these men have a mean hip breadth greater than 16.5 in)

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

P(x > 16.5)

$P( x > 16.5) = P( z > \displaystyle\frac{16.5-14.4}{\frac{1}{\sqrt{123}}}) = P(z > 23.29)$

$= 1 - P(z \leq 23.29)$

Calculation the value from standard normal z table, we have,

$P(x > 16.5) = 1 - 1 = 0$

There is 0 probability that 123 randomly selected men have a mean hip breadth greater than 16.5 in

4 0

3 years ago

6/x-8=2/x+6 how do i solve this

lutik1710 [3]

6/(x-8)=2/(x+6)
times both sides by (x-8)(x+6)
6(x+6)=2(x-8)
distribute
6x+36=2x-16
minus 2x both sides
4x+36=-16
miinus 36 both sides
4x=-52
divide both sides by 4
x=-13

8 0

3 years ago

Is the absolute value of -29 less than 29?

Verdich [7]

Answer:

Step-by-step explanation:

The absolute value is EXACTLY 29, so.

8 0

2 years ago

Does the following relationship represent a function? <br> A. Yes <br> B. No

navik [9.2K]

A. Yes answer it’s function correct.

8 0

2 years ago

Read 2 more answers

-5 (1-5x) +5 (-8x-2)=-4x-8x need a worked out answer for x plz help me

xz_007 [3.2K]

The work inside parentheses cannot be carried out as shown, so the next approach to consider is multiplying the expressions inside the parentheses by -5 and 5 respectively:

-5 + 25x - 40x - 10 = -4x - 8x (Are you sure it's really "-4x - 8x"?)

Combining the x-terms:

-5 - 15x - 10 = -12x

Combining all like terms: -15 = 3x, so that x = -5 (answer)

3 0

2 years ago