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aliina [53]
3 years ago
11

Demonstrate how you can use the slope formula to write the point-slope form of an equation of a line.

Mathematics
1 answer:
nevsk [136]3 years ago
5 0
This is how I did it.

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The population of two different villages is modeled by the equations shown
vlada-n [284]

Answer:

Year = 1995 and population = 315

Year = 2015 and population = 715

Step-by-step explanation:

It is given that the population of two different villages is modeled by the given equations:

y=x^2-30x+540

y=20x+15

The population of both villages are same after x years after 1980 if

x^2-30x+540=20x+15

x^2-30x+540-20x-15=0

x^2-50x+525=0

Splitting the middle term, we get

x^2-15x-35x+525=0

x(x-15)-35(x-15)=0

(x-15)(x-35)=0

x=15,35

It means, after 15 or 35 years, the population will same.

For x=15, years is 1980+15=1995 and population is  

y=20(15)+15=315

For x=35, years is 1980+35=2015 and population is  

y=20(35)+15=715.

Therefore, population are equation in Year = 1995 and population = 315 or Year = 2015 and population = 715.

7 0
3 years ago
4. The mode of the following data set is 15, 16, 17, 23. 11, 19, 20, 15, 18, 22. 15, 19​
ASHA 777 [7]

ANSWER ↓

========================

u can download the gauthmath app i promise it's very helpful here's the code if needed <u>3AFJF9</u>

<em>trust</em><em> me</em><em> its</em><em> very</em><em> helpful</em><em> </em><em>:</em><em>)</em>

7 0
3 years ago
Read 2 more answers
A hobby store marks up remote-controlled cars 25%. The original
aksik [14]
Answer: $37.50

Explanation:
1. Turn 25% into a decimal by removing the “%” and placing a “0.” in front of it. (0.25)
2. Multiply the decimal (0.25) by the original price of the car (30). (0.25x30=7.5)
3. Add 7.5 to 30 to get the answer. (7.5+30=37.5=$37.50)
7 0
3 years ago
Write the number in expanded form 249,104,330
olga2289 [7]
200,000,000 + 40,000,000 + 9,000,000 + 100,000 + 4,000 + 300 + 30
6 0
3 years ago
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I NEED HELP ☹️☹️!!!!!!
lianna [129]
Answer: 4/3x - 1 = y
7 0
3 years ago
Read 2 more answers
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