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timama [110]
3 years ago
7

Find the value of X: 120,150,75,60

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
3 0

Answer:idek where to start

Step-by-step explanation:

u forgot a lil information there buddy

if its the middle

ima say 100 other than that add more info next time

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X to the power of 2 subtract 3x for x=4
Helen [10]
First, X^2 while x is 4 =4^2, which is 4x4, which is 16 
3X while x is 4 is 12. 16-12=4. So the answer is 4
6 0
3 years ago
For what value of k will the lines x+2y=0, 3x-4y-10=0 and 5x+ky-7=0 are concurrent?​
konstantin123 [22]

Answer:

After solve the equations we get value of k=3

Step-by-step explanation:

We need to find value of k for which the lines x+2y=0, 3x-4y-10=0 and 5x+ky-7=0 are concurrent.

If the lines are concurrent, they pass through same point.

Let:

x+2y=0--eq(1)\\ 3x-4y-10=0--eq(2)\\ 5x+ky-7=0--eq(3)

First solving equation 1 and 2 to find values of x and y

From eq(1) we find value of x and put it in eq(2)

From \ eq(1) x+2y=0\\x=-2y\\Put x=-2y \ in \ eq(2)\\3x-4y-10=0\\3(-2y)-4y-10=0 \\-6y-4y=10\\-10y=10\\y=\frac{10}{-10}\\y=-1

After solving we get value of y=-1

Now putting in eq(1) to get value of x

x+2y=0\\x+2(-1)=0\\x-2=0\\x=2

So, Value of x= 2

Now put value of x=2 and y=-1 into eq(3) to find value of k

5x+ky-7=0\\5(2)+k(-1)-7=0\\10-k-7=0\\-k+3=0\\-k=-3\\k=3

So, After solve the equations we get value of k=3

4 0
3 years ago
If f(x) = 6x2 - 4 and g(x) = 2x + 2, find (f - g)(x).
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Step-by-step explanation:

note (f - g)(x) = f(x) - g(x), thus

f(x) - g(x)

= 6x² - 4 - (2x + 2) ← distribute

= 6x² - 4 - 2x - 2 ← collect like terms

= 6x² - 2x - 6

7 0
3 years ago
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Arlan states, "If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a rhombus." Decide if his statem
-Dominant- [34]
The answer is b. the correct thing to say is "<span>If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a Rectangle."</span>
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m=-2

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