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Vesnalui [34]
3 years ago
13

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x^2 +1 = -10

Mathematics
1 answer:
12345 [234]3 years ago
3 0

Step-by-step explanation:

The given quadratic equation is :

13x^2 +1 = -10x\\\\or\\\\13x^2+10x+1=0

The formula to solve a quadratic equation is :

x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}

Put a = 13, b = 10 and c = 1

So,

x=\dfrac{-10\pm \sqrt{10^2-4(13)(1)} }{2(13)}\\\\x=-0.118, -0.651

Hence, this is the required solution.

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4 0
3 years ago
Which expression is not equal to1/4 of 52
Art [367]
1/4 as a decimal is 0.25 (divide one by four). You can also multiply 1/4 by 52, but converting it into a decimal is typically easier.

"Of" typically means multiply, so multiply 52 * 0.25 to get the product 13.

For Option A., solve for 0.25 * 52, the final result should be 13.

For Option B., convert 4% into a decimal by dividing 4 over 100, you will get 0<span>.04, multiply 0.04 * 52 to get 2.08.
</span>
For Option C., divide 52 by 4, the quotient should be 13. 

For Option D., 52 over 4 is another way to write 52 divided by 4, therefore, the answer, once again, is 13. 

When comparing all the answers, you will notice all the answers are equal, except option B.

2.08 is not equal to 13

Therefore, your answer is <u>B. 4% of 52</u>

4 0
3 years ago
A garage floor measures 150 feet by 120 feet a scale drawing of the floor on grid paper uses a scale of 1 unit : 15 what are the
Sophie [7]
1 : 15 - scale

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4 0
3 years ago
Jan ran three times as far as Millie. Jan also ran 12 more miles than Millie. How far did Jan run?
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8 0
3 years ago
Read 2 more answers
In triangle NOP, Np is extended through Point P to Point Q, m &lt; NOP =(x+17) degrees, m&lt; PNO =(2x-4) degrees, and m&lt; OPQ
Zigmanuir [339]
To find the measure of angle OPQ, we have two equations...
y+5x-17=180 because angles OPN and OPQ are supplementary...
AND
x+17+2x-4+y=180 because the total degrees of a triangle must add up to 180.
The equations...
5x+y=197
3x+y=167
solce the system of equations...
x=15
y=122
Since we wanted to solve for y, 122 is the answer.
The measure of angle OPQ is 122.

Sorry this took forever. The website is hard to use because I'm used to using the app:)

Best of wishes!

6 0
3 years ago
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