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4 years ago

Lexi needs to buy 105 vases for a party each package has 6 vases how many packages should lexi buy

1 answer:

8 0

They should buy 18 packages because 105 ÷ 6 is 17 with 3 left over. They should get another box because there is 3 left over vases that they wouldnt use

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PLEASE help (desperate) :(

mars1129 [50]

Answer:

$4= \sqrt{16} \\1.5 = \sqrt{2.25}\\8 = 6^{2} /9*2\\1 = \frac{12 - 2}{6 + 4}\\5 = \sqrt{16 + 9} \\9 = 63/3^{2} +|2|$

6 0

3 years ago

A deck of cards contains 30 cards with labels 1, 2, . . . , 30. Suppose that somebody is randomly dealt a set of 7 cards of thes

____ [38]

$\displaystyle |\Omega|=\binom{30}{7}=\dfrac{30!}{7!23!}=\dfrac{24\cdot25\cdot\ldots\cdot30}{2\cdot3\cdot\ldots\cdot 7}=2035800$

$\displaystyle\\|A|=\binom{15}{3}\cdot \binom{15}{4}=\dfrac{15!}{3!12!}\cdot\dfrac{15!}{4!11!}=\dfrac{13\cdot14\cdot15}{2\cdot3}\cdot\dfrac{12\cdot13\cdot14\cdot15}{2\cdot3\cdot4}=13\cdot7\cdot5\cdot13\cdot7\cdot15=621075\\\\P(A)=\dfrac{621075}{2035800}=\dfrac{637}{2088}\approx30.5\%$

$\displaystyle\\|A|=\binom{10}{7}\cdot 3^7=\dfrac{10!}{7!3!}\cdot2187=\dfrac{8\cdot9\cdot10}{2\cdot3}\cdot2187=4\cdot3\cdot10\cdot2187=262440\\\\P(A)=\dfrac{262440}{2035800}=\dfrac{243}{1885}\approx12.9\%$

4 0

2 years ago

Write a numerical expression for the verbal expression. the difference of six and two divided by four

Ilia_Sergeevich [38]

Answer:

(6-2)/4

Step-by-step explanation:

Make sure you have the parenthesis

6 0

3 years ago

I forget this there making me do this when it was like in 7th grade and now its on my exam

In-s [12.5K]

Answer:

The first and third one

Step-by-step explanation:

They doesn't fit. The word "it" would fit better.

It doesn't fit. The word "they" would fit better.

I hope this helps!

3 0

3 years ago

a computer expert can do a job on the computer in 6 hours. His secretary can do the same job in 7 hours. After the expert works

konstantin123 [22]

Answer:

4 + 2/3 hours

Step-by-step explanation:

For the expert,

6 hours = 1 job

For the secretary,

7 hours = 1 job

We want to figure out how much the expert gets done in 2 hours.

2 hours = x jobs for the expert.

To turn 6 hours = 1 job into this, we can multiply both sides of the equation by 2 (the number we want to get to) / 6 (the number we are at) to get

6 hours * 2/6 = 1 job * 2/6

2 hours = 2/6 jobs

Therefore, the expert does 2/6 of the job, and 1-2/6 = 4/6 of the job is left for the secretary. We want to figure out how long it takes for her to complete the job

We know

7 hours = 1 job

and want to figure out

y hours = 4/6 jobs

We can multiply both sides of the original equation by (4/7) (the number we want to get to) / 1 (the number we are at) to get

7 hours * 4/6 = 1 job * 4/6

28 /6 hours = 4/6 jobs

= 4 + 4/6 hours

= 4 + 2/3 hours

8 0

3 years ago