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3 years ago

Which two lines are parallel? Explain your reasoning. 1. 5y=2x-5 2. 5y=-4+3x 3. 5y-3x=-1

Mathematics

2 answers:

rodikova [14]3 years ago

8 0

2 and 3 are both parallel because both slopes are m=3/5, which equal slopes-parallel lines

WARRIOR [948]3 years ago

4 0

#2 and #3 ______________

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In the local frisbee league, teams have 7 members and each of the 4 teams takes turns hosting tournaments. At each tournament, e

mars1129 [50]

There are 4 teams in total and each team has 7 members. One of the team will be the host team.

Tournament committee will be made from 3 members from the host team and 2 members from each of the three remaining teams. Selecting the members for tournament committee is a combinations problem. We have to select 3 members out 7 for host team and 2 members out of 7 from each of the remaining 3 teams.

So total number of possible 9 member tournament committees will be equal to:

$7C3 \times 7C2 \times 7C2 \times 7C2\\ \\ = 324135$

This is the case when a host team is fixed. Since any team can be the host team, there are 4 possible ways to select a host team. So the total number of possible 9 member tournament committee will be:

$9 \times 324135\\ \\ =2917215$

Therefore, there are 2917215 possible 9 member tournament committees

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3 years ago

All functions have a domain and a range. True False

Elza [17]

Answer:

True

Step-by-step explanation:

The definition of the function is a relation with exactly one x for each y. x is the domain, and y is the range, so all functions have a domain and a range.

6 0

3 years ago

Which expression does the graphic represent? 8 positive tiles. 1 tile is crossed out. 7 minus 1 7 minus (negative 1) 8 minus 1 8

Tanzania [10]

Answer:

7-(-1)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the sum of 6 4/5 and 6 4/5? A. 12 4/5 B. 29/5 C. 0 D. -12 4/5

maw [93]

$\bf6 \frac{4}{5} + 6 \frac{4}{5} = (6 + 6) \frac{4}{5} = 12 \frac{4}{5}$

5 0

3 years ago

Read 2 more answers

In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years. Assuming that life expectancy bet

Darya [45]

Answer:

49145 years

Step-by-step explanation:

In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years.

Assuming that life expectancy between 2000 and 2100 increases by the same percentage as it did between 1900 and 2000,what will life expectancy be for women in 2100?

In 10 years, the expectancy increased by 85/45 = 17/9

between 2000 and 2100, it will increas by 10 time 10 years, so expected expectancy is $85*(\frac{85}{45})^{10} = 49145$ years

4 0

3 years ago