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marishachu [46]
3 years ago
12

(Can someone help I'm taking a math quiz.) Seventy parents showed up for a parent meeting at school. Mrs. Quinn set up 12 tables

in the library for the meeting. The graph below displays this information

Mathematics
2 answers:
il63 [147K]3 years ago
4 0

Answer:

for every 2 tables there are 10 chairs, so for 12 tables there are 60 chairs

Levart [38]3 years ago
3 0

Okay. So first I divided 70 by 12 giving me an answer of 5.833333, rounding it to 5.8. Meaning 5 chairs per table (considering you can't have 0.8 of a chair).

5 chairs for each table, 10 for two tables, and so on. So, yeah, I could be wrong, and if so I'm sorry.

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Identify the solution
sashaice [31]

Answer:

(- 1, - 1 )

Step-by-step explanation:

Given the 2 equations

y = 4x + 3 → (1)

x + y = - 2 → (2)

Substitute y = 4x + 3 into (2)

x + 4x + 3 = - 2, that is

5x + 3 = - 2 ( subtract 3 from both sides )

5x = - 5 ( divide both sides by 5 )

x = - 1

Substitute x = - 1 into (1)

y = 4(- 1) + 3 = - 4 + 3 = - 1

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3 years ago
A culture started with 5000 bacteria after three hours it grew 6500 bacteria predict how many bacteria will be present after 13
charle [14.2K]

Answer:

15595 bacteria will be present after 13 hours.

Step-by-step explanation:

Continuous population growth:

The continuous population growth model, for the population after t hours, is given by:

P(t) = P(0)e^{rt}

In which P(0) is the initial population and r is the growth rate.

Started with 5000 bacteria

This means that P(0) = 5000

So

P(t) = 5000e^{rt}

After three hours it grew 6500 bacteria:

This means that P(3) = 6500. We use this to find r.

P(t) = 5000e^{rt}

6500 = 5000e^{3r}

e^{3r} = \frac{65}{50}

\ln{e^{3r}} = \ln{\frac{65}{50}}

3r = \ln{\frac{65}{50}}

r = \frac{\ln{\frac{65}{50}}}{3}

r = 0.0875

So

P(t) = 5000e^{0.0875t}

How many bacteria will be present after 13 hours?

This is P(13). So

P(13) = 5000e^{0.0875*13} = 15594.8

Rounding to the nearest whole number

15595 bacteria will be present after 13 hours.

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Answer:

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Step-by-step explanation:

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