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____ [38]
3 years ago
15

What is the 30 60 90 rule and the 45 45 90 rule (to do with triangles)

Mathematics
1 answer:
Sphinxa [80]3 years ago
7 0
The 30,60,90 - the hypotenuse is equal to twice the length of the shorter leg , the hypotenuse side =2x , the shortest side =x and the straight side is x square root 3
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would Annabelle be able to pay off the loan with the lower montly payment in 5 years by setting aside $200 each month​
NISA [10]

Answer:

no

Step-by-step explanation:

3 0
2 years ago
3x3 – 19x2 + kx – 30<br> What is the value of k?
Citrus2011 [14]

Answer:

Let's simplify step-by-step.

(3)(3)−(19)(2)+kx−30

=9+−38+kx+−30

Combine Like Terms:

=9+−38+kx+−30

=(kx)+(9+−38+−30)

=kx+−59

Answer:

=kx−59

6 0
2 years ago
What is the constant of proportionality in the equation y=2.5xy=2.5xy, equals, 2, point, 5, x?
Lera25 [3.4K]
...........................
5 0
3 years ago
Read 2 more answers
__ x 5 &gt; 5 <br><br> 3/3 <br> 2/3<br> 5/3
Citrus2011 [14]
_ * 5 > 5

3/3 is equal to 1 which would make them equal to each other.
2/3 is less than one which means it would make the number on the left less than 5, not greater than.
the answer is 5/3 because it is bigger than the other answer choices and will result in a greater number than that on the right.
7 0
2 years ago
Read 2 more answers
A bivariate data set has x = 21, sx = 13, y = 55, sy = 27, and r = .88. What is the equation for the regression line of y on x?
earnstyle [38]

Answer:

c) y=16.57+1.83x

Step-by-step explanation:

Equation for regression line of y on x is given as

\hat{y}=mx+b --- (1)

where

\hat{y} = predicted value

m = slope of line

b = intercept

m and b are found as

m=r\frac{S_{y}}{S_{x}}---(2)\\\\b=\bar{y}-m\bar{x}---(3)

r = correlation coefficient = 0.88

Sx = standard deviation for independent variable x = 13

Sy = standard deviation for dependent variable y = 27

\bar{x} = mean value of independent variable x = 21

\bar{x} = mean value of dependent variable y = 55

Substituting these values in (2) and (3)

m=r\frac{S_{y}}{S_{x}}\\\\m=(0.88)\frac{27}{13}\\\\m=1.83

b=\bar{y}-m\bar{x}\\\\b=55-(1.827)(21)\\\\b=16.57

Putting these values of m and b in (1)

y=1.83x+16.57

5 0
3 years ago
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