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Naily [24]
3 years ago
10

What is the value of x in the equation 1/5x - 2/3y =30 when y =15 ?

Mathematics
2 answers:
SpyIntel [72]3 years ago
4 0
Solve for x:
x/5 - 10 = 30
Put each term in x/5 - 10 over the common denominator 5: x/5 - 10 = x/5 - (50)/5:
x/5 - (50)/5 = 30
x/5 - (50)/5 = (x - 50)/5:
(x - 50)/5 = 30
Multiply both sides of (x - 50)/5 = 30 by 5:
(5 (x - 50))/5 = 5×30
(5 (x - 50))/5 = 5/5×(x - 50) = x - 50:
x - 50 = 5×30
5×30 = 150:
x - 50 = 150
Add 50 to both sides:
x + (50 - 50) = 50 + 150
50 - 50 = 0:
x = 150 + 50
150 + 50 = 200:
Answer:  x = 200
hichkok12 [17]3 years ago
4 0
\frac{1}{5} *x- \frac{2}{3} *y=30

x/5 - 2*15/3=30

x/5 - 30/3 = 30

x/5 - 10 = 30

x/5 = 40

x = 40 x 5

x = 200
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6 0
3 years ago
Read 2 more answers
Please help me!
Tomtit [17]
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3 0
3 years ago
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Point T' has coordinates (-3, 4). If it was translated up 3 units, what were the coordinates of its pre-image?
MrMuchimi
Translation refers to a rigid motion or transformation where you move an object from one location to another. 
Translations are base on the rule (x,y) -- (x+a, y+b) where the words right and left represent the change in the x-axis, and the words up and down the change in the y-axis.

In this exercise it is asked you to find the coordinates of the preimage of point T', which has the coordinates (-3,4) and is the effect of a translation of 3 units up. As previous said, the words up and down represent a change on the y-axis, meaning that the y-coordinate is the one that should be changed.

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The point that represents the coordinates of the pre-image is (-3,1).
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3 years ago
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