10. simplify the radical expression. (5+ sqrt3) (5- sqrt3)

1 answer:

4 0

To solve this problem you will need to multiply the terms using distributive property
(5+√3)(5-√3)= 25-5√3+5√3-3)=22
choice b

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BRAINLIEST FOR CORRECT ANSWERRR

ra1l [238]

Answer:

Part A:

The vertex : x = - b / 2 a = - 28 : ( - 2 ) = 14

y = f ( 14 ) = - 14² + 28 · 14 - 192 = 196 + 392 - 192 = 4

The vertex is ( 14, 4 ). It means that the maximum hourly profit is $4, and that the shop should sell 14 sodas to reach the maximum.

Part B :

We will solve the quadratic equation:

x 1/2 = ( - 28 +/- sqrt ( 784 - 768 ) ) / ( - 2 )

x 1 = 12, x 2 = 16.

It means that if the shop must sell more than 12 and less then 16 sodas if they want to make a profit ( 13, 14, or 15 ). If they sell 12, or 16 they will brake even.

I think

3 0

4 years ago

Read 2 more answers

Please solve this question based on integeration chapter

Olenka [21]

Answer: -ln |cos x| - ln |sin x| + C

Step-by-step explanation:

$.\quad \int\dfrac{sin^2x-cos^2x}{sin\ x\ cos\ x}dx\\\\\\=\int \dfrac{sin^2x}{sin\ x\ cos\ x}dx-\int \dfrac{cos^2x}{sin\ x\ cos\ x}dx\\\\\\=\int \dfrac{sin\ x}{cos\ x}dx-\int \dfrac{cos\ x}{sin\ x}dx\\\\\\=\int tan\ x\ dx - \int cot\ x\ dx\\\\=-ln |cos\ x|-ln|sin\ x| + C$