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SCORPION-xisa [38]
3 years ago
14

a) Solve the first equation, -3A + 3 = -24, to find the coordinate of Point A. Show your work. (2 points)

Mathematics
1 answer:
Gnesinka [82]3 years ago
7 0
-3A +3 = -24

Divide by -3
  A -1 = 8
Add 1
  A = 9
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Brainliest and points !! ANSWER ASAP !!
Igoryamba

Answer:

Step-by-step explanation:

The sum of the ages of a Mother and her son is 78 , three years ago the mother is five times as old as the son, what is their present ages?

To solve this , let the age of the mother be x and the age of the son be y , from the first statement :

x + y = 78

Three years ago , the mother will be x- 3 and the son will be y - 3 , from the second statement:

x - 3 = 5 ( y-3)

x- 3 = 5y - 15

x - 5y = -12

The resulting equations are

x + y = 78

x - 5y = -12

This is called a simultaneous linear equation , that means it is a linear equation.

The side of a square is xcm , if the difference between the area and the perimeter is 12 , find the legth of its side.

Interpretation:

The formula for the area of a square is l^{2} and the perimeter is 4l , from the question , we have

x^{2} - 4x = 12

This is not a linear equation , it is simply a quadratic equation , so the situation is non linear

5 0
4 years ago
Write the equation of the circle centered at (3, 5) and tangent to x = -1. I need help pleasse
Annette [7]

Answer:

(x - 3)² + (y - 5)² = 16

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r the radius

given (h, k ) = (3, 5 ) we require to find r

r is the distance from the centre to a point on the circle

given x = - 1 is a tangent the r is the distance between the x- coordinates

r = | 3 - (- 1) | = | 3 + 1 | = | 4 | = 4

then equation of circle is

(x - 3)² + (y - 5)² = 4² , that is

(x - 3)² + (y - 5)² = 16

7 0
2 years ago
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Answer:

x=12

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Step-by-step explanation:

paralellograms will become 360 degrees

so 2(5x) +2(10x)= 360

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10x + 20x = 360

= 30x

divide both sides by 30 and isolate

<u>30x </u> = <u>360</u>

30        30

x=12

multiply 12 by 10x and 5x

10x = 120

5x = 60

7 0
3 years ago
I need some help with this one I'm lost!
SpyIntel [72]

Answer:

-334

Step-by-step explanation:

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3 0
3 years ago
Last year at a certain high school, there were 100 boys on the honor roll and 84 girls on the honor roll. This year, the number
-BARSIC- [3]

Answer:

I Think the honor of total students is 50%

Step-by-step explanation:

25 +17=45

Round 45 to the nearest tenth and you get 50

6 0
3 years ago
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