4 years ago

10 X 8 The Pythagorean theorem

Mathematics

1 answer:

kifflom [539]4 years ago

3 0

Answer:

Step-by-step explanation:

What is the question?

10 x 8 = 80

Or, if Pythagorean’s theorem is included,

The square root of 100 -64 = square root of 36 = 6

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Using the statement, write an equation in one variable.

sattari [20]

Answer:

n + (n + 1) + (n + 2) = 12 + 2(n + 2)

Step-by-step explanation:

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3 years ago

The sides of a triangle are given by the equations 4x-y-7=0,x+3y-31=0 and x+5y-7=0.determine the point of intersection of its al

Nezavi [6.7K]

Hello,

1)Let's call A=inter (4x-y-7=0, x+3y-31=0)
4x-y=7
x+3y=31
==>13x=52==>x=4
and y=4*4-7=9

A=(4;9)

2)Let's call B=inter (4x-y-7=0, x+5y-7=0)

4x-y=7
x+5y=7
==>21x=42
==>x=2 and y=4*2-7=1

B=(2,1)

3) Slope of BD: y=-x/3+31/3 ==> slope perpendicular=3

Line BD:y-1=3(x-2)==>y=3x+5

4) Slope AE: y=-x/5+7/5 ==>slope perpendicular=5
Line AE: y-9=5(x-4)==> y=5x-11

5) intersection (BD;AE):
y=5x-11
y=3x-5
==>2x=6==>x=3
and y=3*3-5=4
H=(3,4)