For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?

Answers

Answer 1

Answer:

I'm going to give you both answer and how I found it if you ever have to do this again except in simple steps not the common core steps

Step 1: 472-4=468

Step 2: 468 divided by 9= 52

The answer would be there is fifty two students per bus.

Hopefully I helped you and showed you how to do it too.

Answer 2

Answer: 52 students were on each bus

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Solve |x + 3| = 7. A. x= -4 B. x= 10 C. x= 4 D. x= -10

Need help with number 5 please and thank you

Answers

Answer:

The slope of f(x) is greater than g(x)

Step-by-step explanation:

So you are given the slope of f(x), this slope can be seen as $(-1)/(2)$

The slope of g(x) is -3, which looks like $(-3)/(1)$

$(-1)/(2)$ is greater than -3

Solve for x
Ax + B = C

Answers

Answer:

(C - B)/A = x

Step-by-step explanation:

Ax + B = C

-B -B

Ax = C - B

Divide both sides by A

x = (C - B)/A

(C - B)/A = x

What is the derivative of: y=1/(x+1)+2?

Answers

That derivative is - 1 / (x + 1)²

$y=(1)/(x+1)+2=(x+1)^(-1)+2\n\ny'=\left[(x+1)^(-1)+2\right]'=-(x+1)^(-1-1)=-(x+1)^(-2)=-(1)/((x+1)^2)$

A room with poor air quality has a particle concentration of 80 units. A fan removes 50% of the remaining particles each hour. What is the particle concentration, in these same units, in the room after 2 hours?

Answers

Answer:

20 units

Step-by-step explanation:

Initial particle concentration = 80 units

Particles removed each hour = 50% of the remaining particles

To find:

Particle concentration after 2 hours = ?

Solution:

Particles removed in 1 hour = 50% of remaining particles

i.e. Particles removed in 1 hour = 50% of initial concentration

Particles removed in 1 hour = 50% of 80 = 40

Particles removed in next 1 hour = 50% of remaining particles

i.e. Particles removed in next 1 hour = 50% of concentration after 1 hour

Particles removed in next 1 hour = 50% of 40 = 20

Total particles concentration removed in 2 hours = 40 + 20 = 60 units

Therefore, particle concentration after 2 hours = Initial concentration - Total particle concentration removed in 2 hours

= 80 - 60 = 20 units

Mei Su had 80 coins. She gave most of them to her friends in such a way that each of her friends got at least one coin and no two of her friends got the same number of coins. What is the largest number of friends to whom Mei Su could have given coins?

Answers

Answer: 12 friends.

Step-by-step explanation:

the data we have is:

Mei Su had 80 coins.

She gave the coins to her friends, in such a way that every friend got a different number of coins, then we have that:

The maximum number of friends that could have coins is when:

friend 1 got 1 coin

friend 2 got 2 coins

friend 3 got 3 coins

friend N got N coins

in such a way that:

(1 + 2 + 3 + ... + N) ≥ 79

I use 79 because "she gave most of the coins", not all.

We want to find the maximum possible N.

Then let's calculate:

1 + 2 + 3 + 4 + 5 = 15

15 + 6 + 7 + 8 + 9 + 10 = 55

now we are close, lets add by one number:

55 + 11 = 66

66 + 12 = 78

now, we can not add more because we will have a number larger than 80.

Then we have N = 12

This means that the maximum number of friends is 12.

Answer:

Step-by-step explanation:

Identify the domain for the following ordered pairs: (3, 5) (-2, 4) (5, 5) (-1, 1).A. (5, 4, 5, 1)
B. (-5, -4, -5, -1)
C. (3, -2, 5, -1)
D. (-3, 2, -5, 1)

Answers

Domain is the x value's
to get your answer, get all the x - values
i.e
(3, -2, 5, -1)
So, You're correct option is C.

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