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Sati [7]
3 years ago
14

1) h - 16 ≤ -24

Mathematics
1 answer:
marta [7]3 years ago
4 0
1. h - 16 ≤ 24
      + 16 + 16
           h ≤ 30
Solution Set: {h|h ≤ 30}, (-∞, 30]

2. y + 6 ≥ -13
        - 6    - 6
          y ≥ -18
Solution Set: {y|y ≥ -18}, [-18, ∞)

3. -3 < n - 8
  + 8      + 8
     5 < n
     n > 5
Solution Set: {n|n > 5}, (5, ∞)

4. 3 ≤ m + 1.4
- 1.4        - 1.4
-1.6 ≤ m
   m ≥ -1.6
Solution Set: {m|m ≥ -1.6}, [-1.6, ∞)

5. x + 0.7 > -0.3
        - 0.7   - 0.7
             x > -1
Solution Set: {x|x > -1}, (-1, ∞)

6. w - 8 ≥ 5.6
       + 8 + 8
         w ≥ 13.6
Solution Set: {w|w ≥ 13.6}, [13.6, ∞)
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The Correlation Coefficient for a relationship is - 0.95. What percentage of the dependent variable in the correlation is due pu
seropon [69]

Answer:

The unexplained variance would be 100-90.25 % = 9.75. And that correspond to the percentage of the dependent variable in the correlation is due purely to chance

Step-by-step explanation:

Previous concepts

Pearson correlation coefficient(r), "measures a linear dependence between two variables (x and y). Its a parametric correlation test because it depends to the distribution of the data. And other assumption is that the variables x and y needs to follow a normal distribution".

In order to calculate the correlation coefficient we can use this formula:  

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

On this case we got that r =-0.95

In order to find the % of variance explained by the model we need to calculate the determination coefficient given by:

R^2 = (-0.95)^2 = 0.9025

And that means this : "90.25% of the variation of y is explained by the variation in x"

So then the unexplained variance would be 100-90.25 % = 9.75. And that correspond to the percentage of the dependent variable in the correlation is due purely to chance

8 0
4 years ago
Solve for L. E=250M/L
Alisiya [41]

Answer:

Step-by-step explanation:

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7 0
4 years ago
Write a rational number in fraction form that is equivalent to -1.\overline{5}
lorasvet [3.4K]

Answer:

\dfrac{-14}{9}.

Step-by-step explanation:

The given number is -1.\overline{5}.

We need to find a rational number in fraction form that is equivalent to given number.

Let x=-1.\overline{5}

x=-1.555...     ...(1)

Multiply both sides by 10.

10x=-15.555...  ...(2)

Subtracting (1) from (2), we get

10x-x=-15.555...-(-1.555...)

9x=-14

Divide both sides by 9.

x=\dfrac{-14}{9}

Therefore, the required rational number is \dfrac{-14}{9}.

4 0
3 years ago
the two angles measuring (30 + 2 a)degree and (125 -a) degree supplementary to each other, then find the value of a.​
Zinaida [17]

Answer:

The value of a is 25

Step-by-step explanation:

When two angles are supplementary, they add up to 180 degrees

Mathematically,

(30 + 2a) + (125-a) = 180

30 + 2a + 125 - a = 180

a + 155 = 180

a = 180-155

a = 25 degrees

6 0
3 years ago
Which is the graph of f (x) = 3 (two-thirds)^x?
DanielleElmas [232]

Answer:

last option lol

Step-by-step explanation:

please just use a graphing calculator

6 0
3 years ago
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