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3 years ago

The bike shop rents bikes for $5 and 5 per hour. John spends 15 dollars. How many hours did John rent the bike?

2 answers:

7 0

I think it is 15 hours If you wrote better I could've explained better but if that cost $5 per 5 Hour that means you spend $1 per 1 hour so if you spend $15 that mean you used bike for 15 hours

kolezko [41]3 years ago

3 0

John rented the bike for 15 hours

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Graph the function h(x) = -2x– 3.

Pani-rosa [81]

Answer:

look below

Step-by-step explanation:

3 0

3 years ago

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Someone please help me with this asap

Leokris [45]

Answer:

All of these terms are dollar amounts.

Step-by-step explanation:

Here, x + y = 10 (where these numerals represent counts)

(1/2)x + (1/4)y = 4 (where (1/2), (1/4) and 4 are dollar amounts)

Let's eliminate y. To accomplish this, mult. the 2nd eq'n by-4, obtaining

-2x - y = -16, and then combining this with the 1st equation, as follows:

-2x - y = -16

x + y = 10

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-x = -6, or x = 6. This represents the number of pens purchased by Terrance.

Subbing 6 for x in the first equation, we get y = 4. This represents the number of pencils he bought.

($0.50)x + ($0.25)y = $4.00 (dollar amounts)

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3 years ago

steve has 500 more marbles than richard at first. he gives 300 marbles to richard. who has more marbles now, and by how many?

Yakvenalex [24]

Steve has x+500 marbles
richard has x marbles

if steve gives richard 300 marbles then
x+500-300 x+300
so x+200 and x+300
richard has more and by 100

8 0

3 years ago

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What is Statistical inference?

rjkz [21]

Answer:

Definition 1: The theory, methods, and practice of forming judgments about the parameters of a population and the reliability of statistical relationships, typically on the basis of random sampling.

Definition 2: The use of randomization in sampling allows for the analysis of results using the methods of statistical inference. Statistical inference is based on the laws of probability, and allows analysts to infer conclusions about a given population based on results observed through random sampling. Two of the key terms in statistical inference are parameter and statistic.

Step-by-step explanation:

Hope this helps, have a good day. c;

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3 years ago

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Please assist me with the domain and range of graphs

Sphinxa [80]

Answer: see below

Step-by-step explanation:

Domain represents the x-values from the smallest (furthest left) to the biggest (furthest right).

Range represents the y-values from the lowest (furthest down) to the highest (furthest up).

Interval notation: If a value is included (closed dot), use a bracket [ ]

If a value is NOT included (open dot), use a parenthesis ( )

Note that ± ∞ is never included.

1. Domain: smallest x-value is -4 (included). biggest x-value is 3 (included)

Range: lowest y-value is 2 (included). highest y-value is 5 (included)

D: x = [-4, 3] R: y = [2, 5]

2. Domain: smallest x-value is -∞ (←). biggest x-value is 2 (included)

Range: lowest y-value is 2 (included). highest y-value is ∞ (↑)

D: x = (-∞, 2] R: y = [2, ∞)

3. Domain: smallest x-value is -∞ (←). biggest x-value is ∞ (→)

Range: lowest y-value is -∞ (↓). highest y-value is ∞ (↑)

D: x = (-∞, ∞) R: y = (-∞, ∞)

4. Domain: smallest x-value is -∞ (←). biggest x-value is ∞ (→)

Range: lowest y-value is -∞ (↓). highest y-value is 4 (included)

D: x = (-∞, ∞) R: y = (-∞, 4]

5. Domain: smallest x-value is -∞ (←). biggest x-value is ∞ (→)

Range: lowest y-value is 3 (included). highest y-value is ∞ (↑)

D: x = (-∞, ∞) R: y = [3, ∞)

6. Domain: smallest x-value is -2 (included). biggest x-value is ∞ (→)

Range: lowest y-value is -3 (included). highest y-value is ∞ (↑)

D: x = [-2, ∞) R: y = [-3, ∞)

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3 years ago