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Komok [63]
3 years ago
8

Last question of the unit test​

Mathematics
1 answer:
professor190 [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Take angle A as reference angle

using sin rule

sin A=opposite/hypotenuse

sin A=10/13

sin A=0.76

sin^{-1} 0.76=49.46 degree

A=49.5 degree

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What does the correlation coefficient of -0.975 on a linear regression indicate?
zaharov [31]

A correlation coefficient of -0.975 on a linear regression indicates: D. One variable has a strong relationship with the other.

<h3>What is Correlation Coefficient?</h3>

Correlation coefficient, r, is a measure of how strong the relationship between two variables is.

A correlation coefficient, r, that is closer to 1 or -1 signifies a strong relationship between two variables and vice versa.

Therefore, a correlation coefficient of -0.975 on a linear regression indicates: D. One variable has a strong relationship with the other.

Learn more about strong relationship on:

brainly.com/question/15552860

6 0
2 years ago
Solve for d. (d-e)/(3d +e)=d
iren2701 [21]

\dfrac{d-e}{3d+e}=d\ \ \ \ |\text{cross multiply}\\\\d(3d+e)=d-e\\\\3d^2+de=d-e\ \ \ |-d+e\\\\3d^2+de-d+e=0\\\\3d^2+(e-1)d+e=0

Use the quadratic formula:

a=3,\ b=e-1,\ c=e\\\\b^2=(e-1)^2-4(3)(e)=(e-1)^2-12e\\\\d=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\d=\dfrac{-(e-1)\pm\sqrt{(e-1)^2-12e}}{2\cdot3}\\\\\boxed{d=\dfrac{1-e\pm\sqrt{(e-1)^2-12e}}{6}}

8 0
3 years ago
5x - 2y=20 find the slope
Hitman42 [59]

Answer:

5/2

Step-by-step explanation:

3 0
2 years ago
Solve: 4x-4=2(×-1)-4y+2y. show some work please:))​
Papessa [141]

your answer is x = -7+1/2

7 0
3 years ago
Solve 3x - 9x + 7 - 3 = -8.<br> also if u explain ill give you most brainy
Alla [95]

Answer:

2

Step-by-step explanation:

add the like terms

3x - 9x + 7 - 3 = -8 ➡ -6x +4 = -8

-6x = -8 -4 ➡ 6x = 12 and x = 2

6 0
3 years ago
Read 2 more answers
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