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NeTakaya
3 years ago
15

Tell which method you used plz 4x^2-15=66

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
3 0

Answer:

x = ±4.5

Step-by-step explanation:

4x² - 15 = 66

Add 15 to both sides.

4x² = 81

Divide both sides by 4.

x² = 20.25

Take the square root of both sides.

x = ±4.5

Hope this helps!

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*Remember solutions are found in the shaded area or on a solid line (points on a dashed line are not a solution).
Irina-Kira [14]

The solutions for the inequality are -

  • (3, 3)
  • (7, 7)
  • (10, 10)

<h3>What is the general equation of a Straight line? What is linear inequality?</h3>

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

A inequality is used to compare two or more expressions. The straight line inequalities are of the form -

y > mx + c

y < mx + c

y ≥ mx + c

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We have the following inequality -

x + 3y > 6

We can write -

x + 3y > 6

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y > (-1/3)x + 2

Refer to the graph of the inequality attached. The plotted points in the shaded region represent the solutions for the inequality. We can write -

  • (3, 3)
  • (7, 7)
  • (10, 10)

Therefore, the solutions for the inequality are -

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  • (7, 7)
  • (10, 10)

To solve more questions on Plotting inequalities, visit the link below -

brainly.com/question/1782515

#SPJ1

7 0
1 year ago
Ben creates a pattern using the rule “add 5.” Laura creates a pattern using the rule “add 10.”
Savatey [412]

Answer:

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you count my 5s like 5, 10, 15, 20, 25

you count by 10s like 10, 20, 30, 40, 50

7 0
3 years ago
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