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2 years ago

Help please it’s algebra

Mathematics

1 answer:

amid [387]2 years ago

8 0

Answer:

I'm not sure, but I think they spend 2$ for each

Step-by-step explanation:

The total items they buyed was 45. The total amount of money they spend was 95. 95 divided by 45 is 2.111111111111111111111 . So if you find 2 as one of your options, that's probably it.

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9,270,000 100 = ?<br> What is the value of the digit 9 in this quotient?

olga2289 [7]

Answer:

90000000000000000000milen

8 0

3 years ago

Write an appropriate inverse variation equation if y = 9 when x = 3.

pav-90 [236]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
y=9\\
x=3
\end{cases}\implies 9=k3\implies \cfrac{9}{3}=k\implies \boxed{3=k}
\\\\\\
thus\qquad y=3x$

3 0

2 years ago

mark has 312 books in his bookcases she has 11 as many fiction books as nonfiction books how many fiction books does mark have?

belka [17]

11 as many fiction books as non fiction.

Fiction books F, Non Fiction NF

F: NF = 11 : 1

Total ratio 11+ 1 = 12.

Fraction of Fiction books F, = 11/12

Total books = 312.

Fiction books = 11/12 * 312 = 286

Fiction books = 286

7 0

2 years ago

Read 2 more answers

Please help me with this please

Andrew [12]

Answer:

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5 0

2 years ago

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Five balls are chosen from a bag of eight blue balls, six red balls, and five green balls. How many of these five-ball selection

Harlamova29_29 [7]

Using the combination formula, it is found that six of these five-ball selections contain exactly five red balls.

The order in which the balls are selected is not important(as balls A, B, C, D and E is the same outcome as balls B, A, C, D and E), hence the <em>combination formula</em> is used to solve this question. If the order was important, then the permutation formula would be used.

<h3>What is the combination formula?</h3>

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by:

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this problem, five red balls can be chosen from a set of six, hence the number of selections is the combination of 5 elements from a set of 6, that is calculated from the formula given above:

$C_{6,5} = \frac{6!}{1!5!} = 6$

Hence six of these five-ball selections contain exactly five red balls.

More can be learned about the combination formula at brainly.com/question/25821700

#SPJ1

4 0

1 year ago