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Degger [83]
2 years ago
15

Plz. solve for y: 3x - y = 13

Mathematics
2 answers:
NikAS [45]2 years ago
8 0
The answer is y= -13+3x
IRINA_888 [86]2 years ago
6 0

Answer:

y=-13+3x

Step-by-step explanation:

-1(3x-y)=-13

-3x+y=-13

y=-13+3x

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Find the equation of the line through point (5,1) and perpendicular to 5x−y=−3. Use a forward slash (i.e. "/") for fractions (e.
IRINA_888 [86]
Y = -1/5x + 2

A line perpendicular to another line has an opposite reciprocal slope. What opposite means is that you flip the sign (from - to + or from + to -) and reciprocal means that you flip the numerator and denominator (so if line A is perpendicular to line B and line As slope is -3, line Bs slope would be 1/3).

First find the slope of 5x - y = -3
Add y to both sides
5x = y - 3
Add 3 to both sides
y = 5x + 3

So the slope of the line is 5. That means the slope of of the perpendicular line is -1/5.

Plug the slope of the perpendicular line and the point (5, 1) into point slope form to solve the equation

y - y1 = m(x - x1)
y - 1 = -1/5(x - 5)
y - 1 = -1/5x + 1
y = -1/5x + 2
3 0
2 years ago
Geometry question-- am I correct?
Fudgin [204]

Answer:

d

Step-by-step explanation:

3 0
3 years ago
A square has an area of 121 square centimetres.<br> What is its perimeter?
Karolina [17]

Answer:

  44 cm

Step-by-step explanation:

The area of a square is the square of the side length. This means the side length is the square root of the area.

  s = √A = √(121 cm²) = 11 cm

The perimeter of a square is the sum of its side lengths. There are 4 equal-length sides, so the perimeter is 4 times the length of one side:

  P = 4s = 4(11 cm)

  P = 44 cm

The perimeter of the square is 44 cm.

3 0
1 year ago
Read 2 more answers
If the given figure is rotated 180° around the origin, what are the new coordinates of point Z? Z= (6,-9)
Nitella [24]

Answer:

Step-by-step explanation:

Rule for 180 rotation: (x,y) becomes (-x,-y)

So (6,-9) becomes (-6,9)

5 0
2 years ago
Convert 11.42424242 to a rational expression in the form of a/b , where b ≠ 0.
TiliK225 [7]
11.424242
isolate the repeating part
11+0.424242

focus on the repeating part
0.42424242
how many places till it repeats again?
2
let's say it is x
x=0.42424242
multiply by 100
100x=42.424242

subtract them
100x-x=42.42424242-0.42424242
the infinite repeats cancel and we get
99x=42
divide by 99
x=\frac{42}{99}



so
11.\overline{42}=11 \space\ \frac{42}{99}
5 0
3 years ago
Read 2 more answers
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