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sineoko [7]
3 years ago
13

Can you help me with my math problems

Mathematics
1 answer:
Gemiola [76]3 years ago
5 0
The dependent variable is the one on the Y (vertical) axis
The independent variable is the one on the X (horizontal) axis

OH OH OH
i just remembered, in 6th or 7th grade, my science teacher gave us a way to remember which is which.

DRY MIX
DRY - Dependent (Responding) is on the Y axis
MIX - Manipulated (Independent) is on the X axis

Hope this helps!

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The line segment between (9,6) and (-2,-1) is bisected at (3.5,2.5). Find the y-intercept of the perpendicular bisector.
tangare [24]

Answer:

Y-intercept is (0,8)

Step-by-step explanation:

Firstly, we need to get the equation of the line segment

We have the general equation as;

y = mx + b

m is the slope and b is the y-intercept

So for the slope between (9,6) and (-2,-1); we have

m = (y2-y1)/(x2-x1)

m = (-1-6)/(-2-9) = -7/-11 = 7/11

Mathematically, when two lines are perpendicular, their slopes have a product of -1

Let the slope of the second line be m

m * 7/11 = -1

7m = -11

m = -11/7

The equation of the second line is;

y = mx + b

y = -11x/7 + b

The line passes through the point (3.5,2.5)

So,

2.5 = -11/7(3.5) + b

2.5 = -5.5 + b

b = 2.5 + 5.5

b = 8

so the y-intercept of the perpendicular bisector is 8

4 0
3 years ago
Carlos spent 45% of his savings on a bike. The bike cost $126. How much did Carlos have after buying his bike
ehidna [41]

Carlos would have $35.71 left.

45% out of 126 is 35.71

7 0
3 years ago
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Find an equation of the circle that has center (−1,2) and passes through ( 2,−2) .
user100 [1]
Equation of a  circle that has a center at (h,k) and radius of r is
(x-h)²+(y-k)²=r²

so

given center (-1,2)
(x-(-1))²+(y-2)²=r²
(x+1)²+(y-2)²=r²

sub the other point to find r or r²

it passes through (2,-2)
sub 2 for x and -2 for y

(2+1)²+(-2-2)²=r²
(3)²+(-4)²=r²
9+16=r²
25=r²
5=r


the equation is
(x+1)²+(y-2)²=5²
8 0
3 years ago
2<br> R<br> congruence theorem
Gnoma [55]

Answer:

ghj

Step-by-step explanation:

7 0
3 years ago
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Write 0.45 as a fraction in simplest form.
Maurinko [17]

Answer:

9/20

Step-by-step explanation:

0.45=45/100=9/20

3 0
2 years ago
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