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love history [14]
3 years ago
12

write an equation in point slope form of the line that passes through the point (0,1) and has a slope if -3/2

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0

Step-by-step explanation:

<u>y</u> - <u>1</u> = <u>-</u><u>3</u>

x - 0 2

2y - 2 = -3x

2y = -3x + 2

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Tomtit [17]
A=\pi r^2 where r is the radius of a circle.
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2 years ago
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I need more helppppppppp, i have to find the area of this circle
dlinn [17]

Answer:

You need to find the radius first,

Half of 23 is = 11.5

Formula you must remember when finding area of circle is:

πr^2

(pie (3.14 or 22/7) x radius squared)

Our pie is 3.14 because they said to use it in this particular question.

3.14 x 11.5^2 (remember we are making our radius squared) <--- Before

Let's evaluate first:

3.14 x 132.25 <--- After evaluating

So, 3.14 x 132.25 = 415.265 <----- your answer

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3 years ago
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balu736 [363]
2x(3y+2) is the answer. First find the LCM of 6 and 4 which is 2 and look out for the common variables on both sides which is x and follow the due process
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A chemist mixes 50 milliliters of a solution that is 20% acid with 75 milliliters of a solution that is 45% acid. How many milli
natka813 [3]
Answer:
81.25 mL
Why?
Total amount of millilitres: 125 mL
Let x represent the millilitres of acid.
Let a represent the amount of acid in the 50 mL solution.
Let b represent the amount of acid in the 75 mL solution.
This means that x = 125 - (a + b)
So, a = 0.2*50
a = 10
So, b = 0.45*75
b = 33.75
Plug it into our equation;
x = 125 - (a + b)
x = 125 - (10 + 33.75)
x = 125 - 43.75
x = 81.25
Therefore, 81.25 mL of the 125 mL mixture is acid.
Alternate solution:
Let x represent the millilitres of acid.
Let a represent the number of millilitres in the mixture.
Let b represent the percentage of acid in the mixture.
This means that x = b*a
So, a = 50 + 75
a = 125
So, b = 0.2 + 0.45
b = 0.65
Plug it into our equation;
x = b*a
x = 0.65*125
x = 81.25
Therefore, 81.25 mL of the 125 mL mixture is acid.

(Hope this helps)
4 0
2 years ago
Find the point p where the line x = 1 + t, y = 2t, z = -3t intersects the plane x + y - z = 0
irga5000 [103]

solution:

1)

X = 1+t, y = 2t, z = -3t

2)

X+y-z= 0  

 (1+t)+(2t) – (-3t) = 0

 6t +1=0

 6t = -1

 T = -1/2

3)

X=1/2,y= -1, z= 3/2


8 0
2 years ago
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