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d1i1m1o1n [39]
3 years ago
7

Triangle ABC is defined by the points A(2,9), B(8,4), and C(-3,-2).

Mathematics
1 answer:
kotykmax [81]3 years ago
7 0

Answer:

5y - 6x = 8 or y = 6x/5 + 8/5

Step-by-step explanation:

let M1= gradient of line AB and M2= gradient of the second line

When two lines are perpendicular, the product of their gradients is -1

i.e, M1M2= -1

M2= -1/M1

A(2,9) and B(8,4)

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

M1= (4-9)/(8-2)

= -5/6

M2= -1÷ -5/6

-1 × -6/5= 6/5

Equation of the line passing through C(-3,-2)

[y-(-2)]/[x-(-3)= 6/5

(y+2)/(x+3)= 6/5

5(y+2)= 6(x+3)

5y+10=6x+18

5y= 6x + 8

y= 6x/5 + 8/5

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7 0
3 years ago
Ž + 1 = 9<br> Ox = 16<br> x = 20<br> Ox = 4<br> Ox=5
kotykmax [81]

Answer:

x = 16

Step-by-step explanation:

x

-- = 9-1 ...... first shift 1 and it will be -1

2

x = 8 ....... secondly 9-1 =8

--

2

x = 16 ..... criss cross and 2×8 = 16

there fore the value of x is equals to 16.

you can check it!

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3 years ago
5. The perimeter of a polygon is__________ equal to 2w+21.
mart [117]
The answer to this question is A
4 0
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You want to put some money in a simple interest account it pays 8% interest annually for 2 years you would like to earn 500 doll
Semmy [17]

You deposit some money into a bank account paying 8% simple interest per year. You received $500 in interest after 2 years. How much the deposit (principal) was?


Result


The principal was $3125.


Explanation


Find principal by using the formula I=P⋅i⋅t, where I is interest, P is total principal, i is rate of interest per year, and t is total time in years.


In this example I = $500, i = 8% and t = 2 years, so


IPPP=P⋅i⋅t=Ii⋅t=5000.08⋅2=3125

4 0
3 years ago
Read 2 more answers
Solve the given system of equations using any method and then choose the correct ordered pair from the given choices:
Mnenie [13.5K]

Answer:

c

Step-by-step explanation:

Given the 2 equations

x + y = 3 → (1)

3x - y = 1 → (2)

Adding the 2 equations term by term will eliminate the term in y

4x = 4 ( divide both sides by 4)

x = 1

Substitute x = 1 into either of the 2 equations and evaluate for y

Substituting into (1)

1 + y = 3 ( subtract 1 from both sides )

y = 2

Solution is (1, 2 ) → c

8 0
3 years ago
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