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1 year ago

Can I find a tutor to help me bro ?

Mathematics

1 answer:

nignag [31]1 year ago

3 0

Solution

Given the quadratic equation:

x² + 2x + 7 = 21

x² + 2x + 7 - 21 = 0

x² + 2x - 14 = 0

a = 1, b = 2, c = - 14

(1) The number of solutions of a given quadratic equation is determine by the discriminant.

From the given values;

(2)² - 4(1 x -14) = 4 + 56 = 60

60 > 0 ( 2 solutions)

1 positive solution and 1 negative solution

Thus, number of positive solutions to this equation is one

(2) The greatest solution or positive solution to the equation is calculated as;

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3 years ago

Helppp please 20 points for that

nikklg [1K]

Answer:

Step-by-step explanation:

a^2 + b^2 = c^2

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3 years ago

Read 2 more answers

Answer correctly with NO FILE (Or links) to get brainliest.

slega [8]

The answer is D. 3x-1. hope this helps !

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3 years ago

The equation the quantity of x plus 20 over 2 = 3x represents when two tutoring services with different rate plans charge the sa

victus00 [196]

The solution to the equation is x = 4

<h3>What are linear equations?</h3>

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

<h3>How to determine the solution to the system?</h3>

A system of linear equations is a collection of at least two linear equations.

In this case, the equation is given as

(x + 20)/2 = 3x

Multiply both sides of the equation by 2

x + 20 = 6x

Subtract x from both sides of the equation

5x = 20

Divide both sides of the equation by 5

x = 4

hence, the solution to the equation is x = 4