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2 years ago

One number is seven less than five times another. If their sum is decreased by four the result is one. Find the numbers

1 answer:

6 0

Let the number be Y .
Y is seven
less than 5 times another (let that other be X)
Y=7-5X
sum of both Y and X minus 4 gives one
Y+X-4=1
now solve both equations .

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I What integer represents 6°F below zero?

NemiM [27]

Answer:

Anything below zero is a negative integer, therefore, the answer would be

-6°F.

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3 years ago

Visitors to a carnival can buy an unlimited-ride pass for 50$ or an entrance-only pass for 20$. In one day, 282 passss were sold

olchik [2.2K]

20*282= 5640
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3 years ago

Solve the following one-step inequality : -12+x ≥9 I GIVE BRAINLEST I KNOW I SPELL WRONG

coldgirl [10]

Answer:

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2 years ago

Read 2 more answers

There are 162 magazines and books in a library. There are 54 more books

Strike441 [17]

Answer:

108 books.

Step-by-step explanation:

Let the number of magazines = m

Let the number of books = b

Given the following data;

Total number of m & b = 162

Translating the word problem into an algebraic equation, we have;

$b = m + 54$ ......equation 1

$m + b = 162$ ......equation 2

Substituting equation "1" into equation "2" we have;

$m + m + 54 = 162$

$2m + 54 = 162$

$2m = 162 - 54$

$2m = 108$

$m = \frac {108}{2}$

m = 54

Now to find the number of books;

$b = m + 54$

Substituting the value of "m" into the equation, we have;

$b = 54 + 54$

b = 108

Therefore, the total number of books in the library is 108 books.

7 0

3 years ago

A set of wrist watch prices are normally distributed with a mean of 767676 dollars and a standard deviation of 101010 dollars. W

Akimi4 [234]

Answer:

0.8224

Step-by-step explanation:

Data

mean: $76

standard deviation, sd: $10

first value of interest, x1: $63

second value of interest, x2: $90

z-score for x1:

z1 = (x1 - mean)/sd = (63 - 76)/10 = -1.3

z-score for x2:

z2 = (x2 - mean)/sd = (90 - 76)/10 = 1.4

The proportion of wrist watch prices are between $63 and $90 is:

P(z1 < z < z2) = P(z < 1.4) - P(z < -1.3)

P(z < 1.4) = 0.9192 (see first picture attached)

P(z < -1.3) = 0.0968 (see second picture attached)

P(z1 < z < z2) = 0.9192 - 0.0968 = 0.8224

7 0

2 years ago