1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldfiish [28.3K]
3 years ago
9

HELPPPPPPPPP i have the most trouble with math what’s the answer??

Mathematics
1 answer:
lakkis [162]3 years ago
6 0

Answer:

Second Option

\frac{5\sqrt{11} +5\sqrt{3}}{8}

Step-by-step explanation:

To simplify the expression you must multiply the numerator and the denominator of the fraction by the conjugate of the denominator.

If you have an expression of the form

a -b then its conjugate will be a + b.

The result of that multiplication will be

a ^ 2 -b ^ 2

Therefore we have the expression

\frac{5}{\sqrt{11} -\sqrt{3}}

By multiplying by the conjugate of the denominator we have

\frac{5}{\sqrt{11} -\sqrt{3}}*\frac{\sqrt{11} +\sqrt{3}}{\sqrt{11} +\sqrt{3}}\\\\\\\frac{5(\sqrt{11} +\sqrt{3})}{(\sqrt{11})^2 -(\sqrt{3})^2}\\\\\\\frac{5\sqrt{11} +5\sqrt{3}}{11 -3}\\\\\\\frac{5\sqrt{11} +5\sqrt{3}}{8}

You might be interested in
Keisha is planning a barbecue for her family. there will be 9 people in attendance at the barbecue. Each person can eat 3/4 of a
disa [49]
T_Bone steak because it cost less
5 0
3 years ago
Read 2 more answers
Given that f(x) = x^2 – 2x - 63 and g(x) = x + 7, find (f - g)(x)
Juliette [100K]

Answer:

(f - g)(x) = x² - 3x - 70

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = x² - 2x - 63

g(x) = x + 7

(f - g)(x) is f(x) - g(x)

<u>Step 2: Find (f - g)(x)</u>

  1. Substitute:                               (f - g)(x) = x² - 2x - 63 - (x + 7)
  2. Distribute -1:                            (f - g)(x) = x² - 2x - 63 - x - 7
  3. Combine like terms (x):          (f - g)(x) = x² - 3x - 63 - 7
  4. Combine like terms (Z):          (f - g)(x) = x² - 3x - 70
3 0
3 years ago
What is the total amount of money earned if $5,000 was in a savings account for three years at 2.5% interest
AlexFokin [52]

Answer:

Daily: $5,389.41

Monthly: $5,389.00

Semi-annually: $5,386.92

Annually:$5,384.45

Step-by-step explanation:

5 0
3 years ago
What is the value of X
AleksandrR [38]
Well you see here, you need to take attest pre-calculus to answer this question.  I am in 6th grade.
7 0
3 years ago
Help with math 360×610÷409= what help
sergij07 [2.7K]

The answer to the equation is approximately 536.91

7 0
3 years ago
Other questions:
  • A cardboard box 6 units high, 4 units wide, and 3 units long can hold 80 pounds of brown rice. A second cardboard box has the sa
    6·1 answer
  • What is the cube root of 3 and 343
    8·2 answers
  • Please answer quickly, no explanation needed! (MathsWatch)
    13·2 answers
  • |2x-3|=5<br><br> Absolute value
    13·2 answers
  • Given: f(x) = x - 7 and h(x) = 2x + 3
    13·1 answer
  • 30 mm<br> 72 mm<br> What is the length of the hypotenuse?
    7·1 answer
  • Which is more, 1 pint or 16 fluid ounces?
    7·2 answers
  • Solve for x. please i need know
    13·1 answer
  • Saul is building a raised garden bed. The perimeter of the garden bed is 28 feet. The length of the garden bed will be 4 less th
    8·1 answer
  • Can someone help me with my math ?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!