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Vanyuwa [196]
2 years ago
8

Find the slope of the line through each pair of points use the slope formula show your work (-9,-13), (-12,15)

Mathematics
1 answer:
drek231 [11]2 years ago
7 0

Answer:

-28/3

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

15-(-13)/-12-(-9)

28/-3 or -9 1/3

Best of Luck!

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Aina must choose a number between 61 and 107 that is a multiple of , 23, and 9 .
Sholpan [36]
The answer is 86. Hope this helps.
7 0
3 years ago
Hayley has $155 in savings, and her brother Hank has $230. Hayley is saving $10 each week, and her brother is spending $15 each
Sindrei [870]

Answer:

After 3 weeks they both will have the same amount in their savings account.

Step-by-step explanation:

Given:

Amount saved by Haley = $155

Amount saved by Hank = $230

Amount saving each week by Haley = $10

Amount spending each week by Hank = $15

We need to find Number of weeks when both both will have same amount in savings account.

Solution:

Let Number of week be 'x'.

Total Amount of Haley can be calculated by Amount saved by Haley plus Amount saving each week by Haley multiplied by number of weeks.

framing in equation form we get;

Total Amount of Haley = 155+10x

Also;

Total Amount of Hank can be calculated by Amount saved by Hank minus Amount spending each week by Hank multiplied by number of weeks.

framing in equation form we get;

Total Amount of Hank = 230-15x

Now we need to find the number of weeks when both will have same amount.

To find the same we will have to make both the equation equal.

So we can say.

155+10x=230-15x

On Solving above equation we get;

We will combine the like terms together;

10x+15x =230-155\\\\25x = 75

Now Dividing both side by 25 using Division property of equality we get;

\frac{25x}{25} = \frac{75}{25}\\\\x=3 \ weeks

Hence, After 3 weeks they both will have the same amount in their savings account.

4 0
2 years ago
Boston, Massachusetts had a population of 617,594 people during January 1 2010, and 675,647 people on January 1 2020.
tigry1 [53]

Answer:

  • See below

Step-by-step explanation:

<u>Exponential function is:</u>

  • y = abˣ

<u>If we consider the time difference in years as x and the initial population as a, then we get:</u>

  • 675647 = 617594*b¹⁰

<u>Find the value of b:</u>

  • b¹⁰ = 675647/617594
  • b¹⁰ = 1.09399864636
  • b = 1.09399864636^(1/10)
  • b = 1.009 (rounded)

<u>The equation we got is:</u>

  • y = 617594*1.009ˣ

Here we have y- population after x years since 2010, x - the number of years since 2010 and 1.009 is the population growth rate.

5 0
1 year ago
The price of an air conditioner was reduced from rs 27000 to rs 24000 find the rate of percentage
k0ka [10]
3000 because the rate of change is from 27000 to 24000 so that's the rate of change but I have no idea what the percentage rate of change is omega lul
5 0
3 years ago
Read 2 more answers
Evaluate 15/r-1 when r=5
DochEvi [55]

Answer: 15/5=3 3-1= 2

The answer would be 2. :P



6 0
3 years ago
Read 2 more answers
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