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3 years ago

The probability distribution for a

Mathematics

1 answer:

Klio2033 [76]3 years ago

7 0

Answer:

Step-by-step explanation:

The probability distribution in the second row simply shows the probabilities for each number in the first row.

To find the probability that x is between -5 and 5, you can add the probabilities -5 < x < 5.

P(-5) = 0.15

P(0) = 0.05

P(5) = 0.1

0.15 + 0.05 + 0.1 = 0.3

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5.5 times a number is fourteen

Anni [7]

Answer:

x = 2.55 (rounded)

x = 2. 5454545455 (exact)

Step-by-step explanation:

We can change this sentence, into a mathematical expression and solve:

5.5 · x = 14

x = 14 / 5.5

x = 2.5454545

x = 2.55 (rounded)

Hope this helps!!

8 0

2 years ago

Read 2 more answers

bob has three times as many baseball cards as bill. together they have a total of 68 cards. how many cards does bob have?

melamori03 [73]

X = bob
y = bill

x + y = 68
x = 3y

3y + y = 68
4y = 68
y = 68/4
y = 17 <== Bills cards

x = 3y
x = 3(17)
x = 51 <=== Bobs cards

8 0

2 years ago

Gabriella and Ming are selling cookie dough for a school fundraiser. Customers can buy packages of white chocolate chip cookie d

soldier1979 [14.2K]

9514 1404 393

Answer:

white chocolate chip: $17
gingerbread: $19

Step-by-step explanation:

We can let x and y represent the costs of packages of white chocolate chip and gingerbread cookie dough, respectively. Then the two sales can be represented by ...

11x +2y = 225

8x +10y = 326

There are several ways a system of equations like this can be solved. One of my favorites is to use a graphing calculator (see attached).

We can also use substitution. We see that the coefficients of y are simply related, so we can use ...

2y = 225 -11x . . . . from equation 1

8x +5(2y) = 326 . . . rearrange equation 2

8x +5(225 -11x) = 326 . . . . substitute for 2y

-47x +1125 = 326 . . . . simplify

799 = 47x . . . . . . . add 47x-326

17 = x . . . . . . . . . . . divide by 47

2y = 225 -11(17) = 38

y = 19 . . . . . . divide by 2

The package costs are ...

white chocolate chip dough: $17

gingerbread dough: $19.

6 0

2 years ago

I want to know what 1/3 + -7/4 is in fraction form! Thanks!

Elina [12.6K]

The answer will be - 17/12

7 0

3 years ago

Read 2 more answers

A 45.00 purchase in Iowa totals 47.70 with tax and a 35.00 purchase in Tennessee titalsc37.45 with tax. Which store has a greate

KengaRu [80]

Answer:

$Tennessee \ at \ 7\%$

Step-by-step explanation:

First we calculate the tax rate in each state:

Iowa Tax Rate

$T_t=\frac{47.70-45}{45}\times100\%\\=6\%$

Tennessee Tax Rate,

$T_t=\frac{37.45-35}{35}\times100\%\\=7\%$

From our calculations it's clear than Tennessee has the highest tax rate of the two at 7% to Iowa's 6%

Hence Tennessee has a greater sales tax percentage.

5 0

3 years ago