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Marina86 [1]
3 years ago
8

What is the discriminant of 9x2 + 2 = 10x? –356 –172 28 72

Mathematics
2 answers:
Airida [17]3 years ago
7 0

Answer:

<h2><em>C. 28</em></h2>

Step-by-step explanation:

Iteru [2.4K]3 years ago
5 0

Answer:

its C on edg

Step-by-step explanation:

follow my ifunny "dankmemehistory"

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Write a quadratic function f whose only zero is −10.
Radda [10]

function is: f(x)=(x+10)^2

4 0
3 years ago
Need help as soon as possible!
qaws [65]

<u>ANSWER</u>=<u>5.2</u>

<u />

<u>EXPLANATION</u>

This triangle shows a example of the Pythagorean Theorem, which means the equation is gonna be

a^2+b^2=c^2

The variables <u>a </u>and <u>b </u>are the straight sides of the triangle, while the variable <u>c </u> is the curved side on the triangle, or what we are trying to find in this question.

Firstly let’s take the two sides that already have a number shown, also known in the Pythagorean Theorem as sides <u>a </u>and <u>b</u>.

2^2+4.8^2=c^2

Now we want to square the two given numbers to get the equation

4+23.04=c^2

Now we add the two given numbers that we have now squared to get the equation

27.04=c^2

The final step will now be to take the number (27.04) and square root it, which should give you the answer, <u>5.2</u>

6 0
3 years ago
Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0
Reika [66]

Answer: x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}

Step-by-step explanation:

25x^2-30x+25=0

x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}

\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}

=\sqrt{30^2-4\cdot \:25\cdot \:25}

=\sqrt{30^2-2500}

=i\sqrt{2500-30^2}

=40i

x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}

x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}

x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}

8 0
2 years ago
−1/3 −(−1/2)<br><br> Brainliest for the right answer
lawyer [7]

The answer would be -1/6 or -0.166667

4 0
3 years ago
Fifteen less than twice a number is less than or equal to -23
lutik1710 [3]
I would think the answer is -16 

but that's is what i think

5 0
3 years ago
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