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Elan Coil [88]
2 years ago
5

Find the slope of the line through each pair of points.

Mathematics
2 answers:
Brut [27]2 years ago
6 0
I agree I took a test a second ago it was correct thank you so much good luck
Natali [406]2 years ago
3 0

Answer:

1. 0, 2. -1/2, 3.undefined, 4. -5/3, 5. 6, 6. -2, 7. 23/17

Step-by-step explanation:

y2 - y1 / x2 - x1

1. -18 - -18 / 15 - 6 = 0

2. 16 - 12 / 0 - 8 = -4/8 = -1/2

3. 37 - 2 / -15 - -15 is undefined (can't have 0 as denominator)

4. 30 - 20 / -5 - 1 = 10 / -6 = -5/3

5. -36 - -12 / 4 - 8 = -24 / -4 = 6

6. - 23 - -15 / 11 - 7 = -8 / 4 = -2

7. 100 - 54 / -38 - -72 = 46 / 34 = 23/17

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55% of the students at a school are girls. If there are 231 girls at the
Simora [160]

Answer:

420

Step-by-step explanation:

The number of students in the school is unknown, so we'll call it x.

55% of the number of students are girls.

There are 321 girls.

55% of x = 231

0.55x = 231

x = 231/0.55

x = 420

Answer: 420

7 0
3 years ago
Please give me the correct answer ​
9966 [12]

Answer:

1 41421356237/10000000000

Step-by-step explanation:

thats the square root of to, plz mark brainliest and also if this is not what u need, tell me

4 0
3 years ago
The population of the world grows exponentially at a rate of 1.1% per year.
natima [27]

Answer:

4

Step-by-step explanation:

Every year, the world grows by 1.1%. Converting to a decimal, we can divide by 100 to get 1.1% = 0.011. This means that the world grows by 0.011 exponentially each year. To put this into an expression, we can add 1 to our percentage to get 1.011. This represents 1 = 100% (the original population) and the growth of 1.1% = 0.011. We multiply the rate including the growth by the population to get the population after one year. After the first year, we have

population * 1.011 as the new population after one year. We do that for every year, so the second year's population is population*(1.011)*(1.011) and so on. If x represents the amount of years, then the population can be represented as

(original population)*1.011ˣ

Therefore, to get from 7 billion to 7.31 billion, we have

7 billion * 1.011ˣ = 7.31 billion

divide both sides by 7 billion to relatively isolate the x

1.011ˣ = 7.31/7

Another way of writing this is

log (base 1.011) (7.31/7) = x

≈ 3.96

Rounding to the nearest whole number, we get 4 as our answer

7 0
3 years ago
1. Phil, Steve, and Esther are aged 19 - 22, and none of them is the same age. Phil's age is an even
zalisa [80]
Phil is 20, Steve is 21, and Esther is 19. Steve is the oldest
7 0
3 years ago
you have been working for a year and saved half of your pay each week how much how much did you save per week ​
Zarrin [17]

Answer:

ummm whats the salary ._.

Step-by-step explanation:

7 0
3 years ago
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