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Zepler [3.9K]
2 years ago
9

•** Plss help me **•

Mathematics
1 answer:
VashaNatasha [74]2 years ago
4 0

Answer:

30

Step-by-step explanation:

You can use the triangle area theorem-

15x4(/2)=30

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6. A set of data points has a correlation coefficient r = -0.86. Your friend claims
olga2289 [7]

Answer:

Yes

Step-by-step explanation:

The line of best fit is used in linear regression models to make predictions, the line of best fit gives the relationship between the dependent and independent variables by obtaining the Coefficient of correlation. The Coefficient of correlation is a value which ranges from - 1 to 1. With values close to either - 1 or 1 depicting a strong negative and positive relationship respectively. Hence, with a correlation Coefficient of - 0.86, which signifies a strong negative relationship, then we can go ahead and make prediction using the model.

7 0
3 years ago
Find the slope of the line passing through the points (-3,1) and (-8,5)
Sindrei [870]

Answer:

-4/5

Step-by-step explanation:

y2-y1/x2-x1 is the formula for slope

3 0
3 years ago
Can someone please help me with math.
Inessa05 [86]

4- 20

I created an equation for this one:

4x+x=100

  • 4x= four times the amount of the other number
  • x= the number
  • combine like terms

5x=100

  • divide by 5

x=20

5. One pretzel costs $3

Create an equation:

  • 2s+p=7
  • 4s+3p=17

Mulitply 2s+p=7 by -2 so you can use elimination.

  • -4s-2p=-14
  • 4s+3p=17

Combine equations

p=3

8 0
3 years ago
Read 2 more answers
At a pet store, there are 30 aquariums.
irakobra [83]

Answer:

f = (20 × 15) + (10 × 6)

Explanation:

You are just find how many fish are salt water and how many freshwater and adding them together. The total number of aquariums is irrelevant in this case.

8 0
3 years ago
Hi there can anyone help me out with this question please
Rudiy27
P(1+i/100)^n

P = Principal
i = Interest Rate per period
N = Time ( no. of periods )

$90000(1+(3.5÷365)/100)^(17×365) = $163168.13
7 0
3 years ago
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