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andre [41]
3 years ago
11

Solve the following system by the substitution method 0.1x + 0.8y = - 5.1 , 0.4x- 0.9y = 8.3

Mathematics
1 answer:
Sav [38]3 years ago
6 0
I hope you can read cursive! And I hope this helps! (:

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Alisiya [41]
Answer: d
The two smallest sides have to add up to the largest one
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Rebecca draws a graph of a real world relationship that turns out to be a set of unconnected points . Can the relationship be li
Bumek [7]
Well, A linear relationship has to be a straight line and a proportional relationship has to go through the origin! Hope that's a good hint!
8 0
3 years ago
The value of the correlation coefficient is always in the range<br> a. 0 to 1 b. 1 to 1 c. 1 to 0
dlinn [17]

Answer:

-1 to 1

Step-by-step explanation:

The correlation Coefficient gives the degree of relationship between two variables while also giving an hint about the type of relationship between them, (positive or negative). Correlation Coefficient could take any value bwuqwen - 1 and 1. With values closer to - 1 or 1 indicating a strong relationship between the variables, Coefficient of 0 means no relationship and a negative value means negative relationship while a positive value plies a positive relationship.

7 0
3 years ago
Mr. Johnson buys 5 bottles of lemonade for the school picnic. He buys four 28
Murljashka [212]

Answer:

180

Step-by-step explanation:

112+64

=112+64

=176

4 0
3 years ago
Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. sin 3π /7 cos 2π/ 21 −
nydimaria [60]

Answer:

sin(3π/7 - 2π/21)

Step-by-step explanation:

Given

sin 3π /7 cos 2π/ 21 − cos 3π/ 7 sin 2π/ 21

Required

Write a trigonometry formula for the expression

Using sine formula, we have:

sin(A - B) = sinAcosB - cosAsinB

The above formula can be applied to the given expression where

A = 3π/7

B = 2π/21

So, the trigonometry formula is:

sin 3π /7 cos 2π/ 21 − cos 3π/ 7 sin 2π/ 21= sin(3π/7 - 2π/21)

3 0
3 years ago
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