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ohaa [14]
4 years ago
11

a line passes through (3, –2) and (6, 2). a. write an equation for the line in point-slope form. b. rewrite the equation in stan

dard form using integers. a. y minus 2 equals four thirds times the quantity x minus 3 end of quantity; negative 4 x plus 3 y equals 18. b. y plus 2 equals four thirds times the quantity x plus 3 end of quantity; negative 4 x plus 3 y equals negative eighteen. c. y minus 3 equals four thirds times the quantity x plus 2 end of quantity; negative 4 x plus 3 y equals 17. d. y plus 2 equals four thirds times the quantity x minus 3 end of quantity; negative 4 x plus 3 y equals negative eighteen.
Mathematics
2 answers:
svetlana [45]4 years ago
8 0

Answer:

Part A) y+2=\frac{4}{3}(x-3) ----> y plus 2 equals four thirds times the quantity x minus 3 end of quantity

Part B)  -4x+3y=-18 ---> negative 4x plus 3y equals negative eighteen

The answer is the option D

Step-by-step explanation:  

Part A) we know that

The equation of a line into point slope for is equal to

y-y1=m(x-x1)

Find the slope

The formula to calculate the slope between two points is equal to


m=\frac{y2-y1}{x2-x1}


we have


A(3,-2)\ B(6,2)


Substitute the values


m=\frac{2+2}{6-3}  

m=\frac{4}{3}  

<u>With the slope m and the point A find the equation of the line</u>

y+2=\frac{4}{3}(x-3) -----> equation of the line into point slope form

Part B) we know that

The equation of the line into standard form is equal to

Ax+By=C

we have

y-2=\frac{4}{3}(x-6) ------> convert to standard form

y=\frac{4}{3}x-8+2

y=\frac{4}{3}x-6

Multiply by 3 both sides

3y=4x-18    

-4x+3y=-18 ----> equation of the line in standard form

Andreyy894 years ago
5 0
\frac{y-y_1}{x-x_1} = \frac{y_2-y_1}{x_2-x_1}  \\ \frac{y-(-2)}{x-3} = \frac{2-(-2)}{6-3}  \\  \frac{y+2}{x-3} = \frac{2+2}{6-3}  \\  \frac{y+2}{x-3} = \frac{4}{3}  \\ y+2= \frac{4}{3} (x-3)
In standard form
y+2= \frac{4}{3} (x-3) \\ 3(y+2)=4(x-3) \\ 3y+6=4x-12 \\ -4x+3y=-18
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Answer:

Weight of Large Box = 18.5 kg

Weight of Large Box = 13.25 kg

Step-by-step explanation:

<u>Given:</u>

There are two types of boxes i.e. Large and Small

Let the weight of Large boxes = L kg

Let the weight of Small boxes = S kg

As per given statement:

  • A delivery of eight large boxes and four small boxes has a total weight of two hundred and one kilograms.

Writing equation for above:

8L + 4S = 201 ....... (1)

  • A delivery of three large boxes and two small boxes has a total weight of eighty two kilograms.

Writing equation for above:

3L + 2S = 82 ....... (2)

Now, by solving the equations (1) and (2), we can get the values of L and S.

<em>Multiplying equation (2) with 2 and subtracting from equation (1):</em>

8L + 4S = 201

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2 \times (3L + 2S) = 82 \times 2

8L + 4S = 201

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6L + 4S = 164

--------------------

2L = 37

L = 18.5 Kg

Putting value of L in equation (1):

8 \times 18.5 + 4S = 201\\\Rightarrow 148 + 4S = 201\\\Rightarrow  4S = 201 - 148\\\Rightarrow  4S = 53\\\Rightarrow S = 13.25\ kg

So, the answer is:

Weight of Large Box = 18.5 kg

Weight of Large Box = 13.25 kg

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After a baseball is hit, the height h (in feet) of the ball above the ground t seconds after it is hit can be approximated by th
lubasha [3.4K]

Answer:

The ball will take 4.05 seconds to hit the ground.

Step-by-step explanation:

we have

h=-16t^{2}+64t+3

This is a quadratic equation (vertical parabola) open down

The vertex is a maximum

we know that

The ball hit the ground when h=0

Solve the quadratic equation

For h=0

-16t^{2}+64t+3=0

The formula to solve a quadratic equation of the form

at^{2} +bt+c=0 is equal to

t=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

-16t^{2}+64t+3=0  

so

a=-16\\b=64\\c=3

substitute in the formula  

t=\frac{-64(+/-)\sqrt{64^{2}-4(-16)(3)}} {2(-16)}

t=\frac{-64(+/-)\sqrt{4,288}} {-32}

t=\frac{64(-)\sqrt{4,288}} {32}=-0.05\ sec  ---> the time cannot be a negative number

t=\frac{64(+)\sqrt{4,288}} {32}=4.05\ sec

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3 years ago
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I need help with #3
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Unit rate = 3/8 : 1/6

We can also write this as:

3/8 / 1/6

Flip the 2nd fraction and multiply:

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Simplify by dividing the numerator and denominaotr by 2:

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So we have:

9/4
7 0
4 years ago
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