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Ann [662]
3 years ago
13

What is 80% of 4 ?????

Mathematics
2 answers:
lawyer [7]3 years ago
6 0
The answer is 3.2 hope that helps
AfilCa [17]3 years ago
4 0
The answer is 3.2 (:
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Anyone??? need some help huys:)
atroni [7]

Slope-intercept form:

y = mx + b        "m" is the slope


First i would isolate the "y" in the equation.

2x + y = 4       Subtract 2x on both sides

2x - 2x + y = 4 - 2x

y = 4 - 2x    or     y = -2x + 4

The given line's slope is -2.


For lines to be perpendicular, their slopes have to be the opposite/negative reciprocals (flipped sign and number)

For example:

slope is 2

perpendicular line's slope is -1/2

slope is -2/3

perpendicular line's slope is 3/2


The given line's slope is -2, so the perpendicular line's slope is 1/2.

The 3rd option is your answer

4 0
3 years ago
Which line has a constant proportionality of 4
Ne4ueva [31]

Answer:

Line A

Step-by-step explanation:

Line A has a constant of proportionality (slope) of 4.

3 0
2 years ago
Graph the line using a point and a slope. Write the equation of each line. A line that passes through the point (0, –3) and para
kiruha [24]
Y + 3 = 1.2(x - 0)

y + 3 = 1.2x - 0

y = 1.2x - 3
5 0
3 years ago
The area of the triangle formed by points of intersection of parabola y=a(x−3)(x+2) with the coordinate axes is 10. Find a if it
ICE Princess25 [194]

Answer: a = 4

Step-by-step explanation: Area of a triangle is calculated as: A_{t}=\frac{b.h}{2}.

The triangle formed by the parabola has base (b) equal to the distance between the points where the graph touches x-axis and height (h) is the point where graph touches the y-axis.

The points on the x-axis are the roots of the quadratic equation:

a(x-3)(x+2)=0

(x-3)(x+2)=0

x - 3 = 0

x = 3

or

x + 2 = 0

x = -2

So, base is the distance between (-2,0) and (3,0).

Since they are in the same coordinate, distance will be:

b = 3 - (-2)

b = 5

Area of the triangle is 10. So constant a is

10=\frac{5.a}{2}

5a = 10.2

a = 4

The constant a of the function y = a(x-3)(x+2) is 4.

7 0
2 years ago
13 points!!! <br><br> 34ft 4in - 8=
vredina [299]
If feet:
34' 4" - 8' = 26' 4"

if inches: = 33' 8"

5 0
3 years ago
Read 2 more answers
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