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Maru [420]
3 years ago
14

What is X-3(2x-7)=76

Mathematics
2 answers:
Jobisdone [24]3 years ago
7 0

Simplifying

x + -3(2x + -7) = 76


Reorder the terms:

x + -3(-7 + 2x) = 76

x + (-7 * -3 + 2x * -3) = 76

x + (21 + -6x) = 76


Reorder the terms:

21 + x + -6x = 76


Combine like terms: x + -6x = -5x

21 + -5x = 76


Solving

21 + -5x = 76


Solving for variable 'x'.


Move all terms containing x to the left, all other terms to the right.


Add '-21' to each side of the equation.

21 + -21 + -5x = 76 + -21


Combine like terms: 21 + -21 = 0

0 + -5x = 76 + -21

-5x = 76 + -21


Combine like terms: 76 + -21 = 55

-5x = 55


Divide each side by '-5'.

x = -11


Simplifying

x = -11

borishaifa [10]3 years ago
5 0
We can find x by using the distributive property.
x-3(2x-7)=76
x-6x+21=76
-5x+21=76
-5x=55
x=-11
I hope this helps! :)
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dexar [7]

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3 years ago
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x=11
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3 years ago
Find the sum. 2x^2 +26x+ 156=0
Mila [183]

Answer:

-13

Step-by-step explanation:

2x²+26x+156=0

x²+13x+78=0

x²+13x=-78

x²+13x+169/4=-143/4

(x+13/2)²=-143/4

x+13/2=(i√143)/2 or x+13/2=-(i√143)/2

x=(i√143)/2-13/2 or x=-(i√143)/2-13/2

(i√143)/2-13/2+(-(i√143)/2)-13/2=(i√143-13-i√143-13)/2=-26/2=-13

5 0
3 years ago
Read 2 more answers
Can someone help me solve this?
Wittaler [7]

Answer:

∠ ABC = 22°

Step-by-step explanation:

OA = OB ( radii of circle )

Then Δ OAB is isosceles with base angles congruent , that is

∠ OBA = ∠ OAB = 17x

The sum of the 3 angles in the triangle sum to 180°

17x + 17x + 11x = 180

45x = 180 ( divide both sides by 45 )

x = 4

Then

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∠ ABC = 90° - ∠ OBA = 90° - 68° = 22°

7 0
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Julli [10]

9514 1404 393

Answer:

  a) see the attached spreadsheet (table)

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a) The attached table shows net income projections for the two companies. Calculate's increases by 0.5 million each year; Computate's increases by 15% each year. The result is rounded to the nearest dollar.

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b) After year 4, Computate's net income is increasing by more than 0.5 million per year, so its growth is faster and getting faster yet. However, in the first 10 years, Calculate's net income remains higher than that of Computate. If we presume that some percentage of net income is returned to investors, then Calculate may provide a better return on investment.

The scenario given here is only interested in the first 10 years. However, beyond that time frame (see part C), we find that Computate's income growth far exceeds that of Calculate.

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c) Extending the table through year 13, we see that Computate's net income exceeds Calculate's in that year. It continues to remain higher as long as the model remains valid.

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