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finlep [7]
2 years ago
13

What are the solution(s) to the quadratic equation x2 – 25 = 0?

Mathematics
2 answers:
DENIUS [597]2 years ago
8 0
X^2 - 25 = 0
Add both sides by 25
x^2 = 25
Take the positive and negative square root.

x = 5
OR
x = -5

Have an awesome day! :)
Amiraneli [1.4K]2 years ago
4 0

Answer:

there are two solutions are x = (+5) and x = (-5)

Step-by-step explanation:

The given quadratic equation is x² - 25 = 0

Now we can get the solutions of this equation by zero factors.

[ since (a² - b²) = ( a-b ) ( a+b ) ]

so x² - 25 = (x-5) (x+5)

( x-5 ) = 0 ⇒ x = 5

or x + 5 = 0 ⇒ x = -5

Therefore, there are two solutions are x = (+5) and x = (-5)

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At a bake sale, Tia and Jaden earned $147 from the cookies they had sold. Then they paid Tia’s mother back $18 for materials to
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Answer: The total profit is $129

Step-by-step explanation:

The total revenue, was $147 (the total they earned), and the cost of the materials is $18 (how much they returned for the materials)

The total profit is computed as the difference between the revenue and the costs, then the total profit of the kids in this case is:

Profit = $147 - $18 = $129

This means that Tia and Jaden earned $129, if they divide it evenly, each one of them gets $129/2 = $64.5

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3 years ago
Need help answer this
Marianna [84]

Answer:

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6 0
2 years ago
The probability that a pupil in class has a calculator is 0.87 what is the probability that a pupil does not have a calculator?
lidiya [134]

Answer:

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Step-by-step explanation:

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Let f(x) = 3x+2 and g(x)=6x-7 find f(x)-g(x)
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3 0
3 years ago
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If m rst = 70, m qst = 2x, and m qsr = 3x-10 what is the m qsr
Anna [14]

Answer:

m qsr = 62°

Step-by-step explanation:

From my understanding, the question states 3 angles of a triangle

All 3 angles of a triangle are equal to 180°.

<u>Step 1: Find x</u>

<em>70 + 2x + 3x - 10 = 180°</em>

<em>70 + 5x - 10 = 180</em>

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<em>x = 120/5</em>

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