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stiv31 [10]
2 years ago
6

Please answer!!!! Express (x + 9)2 as a trinomial in standard form.

Mathematics
1 answer:
Ghella [55]2 years ago
4 0

Answer:

x² +18x +81

Step-by-step explanation:

(a+b)²=a²+b²+2ab

(x+9)² = x²+9²+2*x*9= x² +18x +81

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3 years ago
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In a right triangle one leg measures a quarter of the other, how much do its acute angles measure? with procedure please​
KATRIN_1 [288]

Answer:

The answer to your question is 14° and 76°

Step-by-step explanation:

Data

leg 1 = x

leg 2 = x/4

angle 1 = ?

angle 2 = ?

Process

To solve problem use trigonometric functions. We must use the trigonometric function that relates both legs (tangent).

    tangent Ф = Opposite side / Adjacent side

-Substitution

    tan Ф = (x/4) / x

-Simplification

    tan Ф = x / 4x

    tan Ф = 1/4

-  Find Ф

     Ф = tan⁻¹(1/4) =  14°

- Find the other acute angle

  The sum of the internal angles in a triangles equals 180°

       Ф + Ф₁ + 90° = 180

-Solve for Ф₁

        Ф₁  = 180 - 90 - 14

-Result

        Ф₁ = 76°              

3 0
2 years ago
Solve the absolute value equation: <br> I’ll give someone a brainliest if you do it in 3 minutes
snow_lady [41]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
Add. Simplify your answer.<br><br> 2/11 + 6/11
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The answer is probably like 8/11
5 0
3 years ago
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jek_recluse [69]

All you have to do is follow the steps shown in the pictures and you’ll get your answer,

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3 years ago
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