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Alex
3 years ago
6

What is the value of x in the equation x – y = 30, when y = 15?

Mathematics
2 answers:
asambeis [7]3 years ago
6 0
X= 45, you would place 15 into y's place, which would give you x-15= 30... then you would add 15 to both sides, which would give you x=45<span />
Citrus2011 [14]3 years ago
5 0
Hello There :)
This is a simple problem with a simple solution.
First change your variable of y to 30
Then turn the problem around to y + 15
Then you should get a answer of 45
45 would be x
Hope This helped!!!!
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Subtract 6x^2-x+3 from 8x^2-7x-2​
daser333 [38]

Answer:

Step-by-step explanation:

1) translate the given informations in a operation

8x^2 -7x - 2 - (6x^2-x+3)

2) change the sign of all the terms in the bracket

8x^2 -7x -2 -6x^2 + x -3

3) simplify the expression

2x^2 - 6x -5

3 0
3 years ago
Pls help me! Pls pls pls pls
k0ka [10]

Answer:

5. A.

6. F

Step-by-step explanation:

5. Perpendicular lines have slopes that are negative reciprocals of one another, so slope is 3

y = 3x + b

using coordinates (-6,3)

3 = 3(-6) + b

b = 21

y = 3x + 21

6. I think F is the right answer

3 0
2 years ago
the music hall has 20 boxes on thurs 2/5 were occupied, on friday 2/4 were occupied and o saturday 8/10 were occupied. Using sym
NikAS [45]
<span><span>1.       </span>The music hall has 20 boxes :
=> on thurs 2/5 were occupied
=> on friday 2/4 were occupied
=> and on saturday 8/10 were occupied.
Let’s find out which day has the most occupied space of the music hall.
2/5 + 2/4 + 8/10 = 6/20 + 7/20 + 10/20
Thurs 2/5 were occupied
=> 6/20 = 0.3
=> 20 * 0.3 = 6 boxes
Friday 2/4 were occupied
=> 7/20 = 0.35
=> 20 * 0.35 = 7 boxes
Saturday 8/10 were occupied.
=> 10/20 = 0.5
=> 20 * .5 = 10 boxes
Thus, during Saturday has the most number of occupied boxes.</span>



8 0
3 years ago
Find the point of intersection of the lines 3=6x-y and 3x-2y=24 ?
Svet_ta [14]
\left \{ {{3=6x-y\ \ |*(-2)} \atop {3x-2y=24}} \right. \\\\  \left \{ {{-6=-12x+2y} \atop {24=3x-2y}} \right. \\+----\\add\ both\ equations\\\\&#10;18=-9x\ \ \ | divide\ by\ -9\\\\&#10;x=-2\\\&#10;y=6x-3=6*(-2)-3=-12-3=-15\\\\&#10;Point\ of\ intersection:\ (-2,-15)
5 0
3 years ago
Plz help asap!!!!!!!
Alexxandr [17]
282600 yards because the formula is pi times radius squared. The radius was 300
5 0
3 years ago
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