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3 years ago

A pair of jeans costs $89. A jean jacket costs twice as much. What is the total cost of a jean jacket and 4 pairs of jeans?

Mathematics

1 answer:

VikaD [51]3 years ago

7 0

If one pair of jeans is 89$ and a jacket cost twice as much multiply 89*2 then 89*4 add them together you get 534

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Assume that for a particular tire brand, the probability of wearing out before 30,000 miles is 0.25. For someone who buys a set

Hatshy [7]

Answer:

The probability that all will last at least 30,000 miles is 0.3164.

Step-by-step explanation:

Consider the provided information.

For a particular tire brand, the probability of wearing out before 30,000 miles is 0.25. Someone who buys a set of four of these tires,

That means the probability of not wearing out is 1-0.25 = 0.75

Now use the binomial distribution formula.

$^nC_r (p^{n-r})(q^r)$

Substitute p = 0.25, q=0.75, r=4 and n=4

$^4C_4 (0.25)^{4-4}(0.75)^4$

$1 \times 0.75^4$

$0.3164$

The probability that all will last at least 30,000 miles is 0.3164.

8 0

3 years ago

The midpoint of AB is M (0, -3). If the coordinates of AA are (2, 1) what are the coordinates of BB?

frez [133]

Answer:

B(-2, -7)

Step-by-step explanation:

Midpoint is (0, -3)

A(x₁, y₁) B(x₂, y₂)

A(2, 1)

$Midpoint = (\frac{x_{1} + x_{2} }{2}, \frac{y_{1} + y_{2} }{2} )\\\\Midpoint = (\frac{2+ x_{2} }{2}, \frac{1 + y_{2} }{2} )$

$(0, -3) = (\frac{2+ x_{2} }{2}, \frac{1 + y_{2} }{2} )$

$\frac{2+ x_{2} }{2} = 0\\\\2 + x_{2} = 0\ \ \ \ times\ both\ sides\ by\ 2\\x_{2} = -2\ \ \ \ subtract\ both\ sides\ by\ 2$

$\frac{1 + y_{2} }{2} = -3\\\\1 + y_{2} = -6\ \ \ \ times\ both\ sides\ by\ 2\\y_{2} = -7\ \ \ \ subtract\ both\ sides\ by\ 1$

∴ B(-2, -7)

6 0

2 years ago

Thanks for the help :)

aliina [53]

Your welcome I’m glad to help out

8 0

3 years ago

Tyler works in retail where she earns $10.50 per hour. She also earns $15 for every new credit account she gets customers to ope

ollegr [7]

Part A. 10.50 and 15 are coefficients while h and c are variables.
Part B. Amount earned = 10.50(37) + 15(12) + 50 = 388.5 + 180 + 50 = $618.50

The coefficient will change

3 0

3 years ago

PLEASE HELP! It’s easy, I just forgot how to do this stuff.

LUCKY_DIMON [66]

Answer:

Step-by-step explanation:

Graph it, or just plug in and eliminate A C and D

5 0

3 years ago