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2 years ago

Each classmates contributes $2 for charity Write an expression for the amount of money raised by your class

2 answers:

5 0

2n
2 is there due to the fact that everyone is donating $2. n is for the number of people in the class.
E.g.
If there were 20 people in the class, you would substitute n for 20.
20 x 2 = $40

Alecsey [184]2 years ago

3 0

$2*S=A
S=Student
A=Total amount

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For a line that goes through points (2,-2) and (1.-6), what is the equation

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Answer:

$y + 6 = 4[x - 1]\:or\:y + 2 = 4[x - 2]$

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First find the rate of change [slope]:

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$\frac{2 - 6}{-2 + 1} = \frac{-4}{-1} = 4$

Then plug each of these coordinates into the Point-Slope Formula, $y - y_1 = m[x - x_1].$ Now remember, in this formula, all the negative symbols give the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL inserting the coordinates into the formula with their CORRECT SIGNS:

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2 years ago

The hypotenuse of a right triangle is 10 inches long. One of the legs is 2 inches longer than the other one. If x is the length

iVinArrow [24]

Answer:

The equation is

X²+2x-48 = 0

Shorter one is 6 inches

Other side= 8 inches

Step-by-step explanation:

The equation for a right angle triangle normally is

A² = B² + C²

Where A = hypotenuse

Then B and C are the order sides of the triangle.

This time

Hypotenuse= 10 inches

The shorter one is X

While the other one is X+2

The equation

10²= x² +(x+2)²

100= x² + x² + 4x +4

100 - 4 = 2x² +4x

96= 2x² +4x

48 = x² +2x

X²+2x-48 = 0

Solving for x

X² +8x-6x-48= 0

X(x+8)-6(x+8)=0

(X-6)(x+8)= 0

X= 6 or x= -8

Definitely x is posiy

So x= 6

Shorter one is 6 inches

Other side= 6+2= 8 inches

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2 years ago