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
Fudgin [204]
3 years ago
6

Help me with this math question

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
5 0

Answer:3

Step-by-step explanation:

Just count from -1 to positive 2 the dot doesn’t move

You might be interested in
Rationalize the denominator of $\displaystyle \frac{1}{\sqrt{2} + \sqrt{3} + \sqrt{7}}$, and write your answer in the form\[
Butoxors [25]

9514 1404 393

Answer:

  57

Step-by-step explanation:

Apparently, you want to simplify ...

  \displaystyle \frac{1}{\sqrt{2} + \sqrt{3} + \sqrt{7}}

so the denominator is rational. It looks like the form you want is ...

  \dfrac{A\sqrt{2} + B\sqrt{3} + C\sqrt{7} + D\sqrt{E}}{F}

And you want to know the sum A+B+C+D+E+F.

__

We can start by multiplying numerator and denominator by a conjugate of the denominator. Then we can multiply numerator and denominator by a conjugate of the resulting denominator.

  \displaystyle =\frac{1}{\sqrt{2} + \sqrt{3} + \sqrt{7}}\cdot\frac{\sqrt{2} + \sqrt{3} - \sqrt{7}}{\sqrt{2} + \sqrt{3} - \sqrt{7}}=\frac{\sqrt{2} + \sqrt{3} - \sqrt{7}}{2\sqrt{6}-2}\\\\=\frac{\sqrt{2} + \sqrt{3} - \sqrt{7}}{2\sqrt{6}-2}\cdot\frac{\sqrt{6}+1}{\sqrt{6}+1}=\frac{(1+\sqrt{6})(\sqrt{2}+\sqrt{3}-\sqrt{7})}{10}\\\\=\frac{\sqrt{2}+\sqrt{3}-\sqrt{7}+2\sqrt{3}+3\sqrt{2}-\sqrt{42}}{10}=\frac{4\sqrt{2}+3\sqrt{3}-\sqrt{7}-\sqrt{42}}{10}

Comparing this to the desired form we have ...

  A = 4, B = 3, C = -1, D = -1, E = 42, F = 10

Then the sum is ...

  A +B +C +D +E +F = 4 + 3 -1 -1 +42 +10 = 59 -2 = 57

The sum of interest is 57.

3 0
2 years ago
Roots of the quadratic equation 0=2x^2+12x-14
cluponka [151]

Answer:

x=-7,1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is this answer?
shusha [124]

Answer:

a

Step-by-step explanation:

Because I did this already

4 0
3 years ago
Read 2 more answers
Find the value of x show your work
Ksivusya [100]

Answer:

x≈13.08

Step-by-step explanation:

We use the pythagora's theorem

a^{2} +b^2=c^2\\a=5\\b=x\\c=14\\5^2+x^2=14^2\\x^2=196-25\\x^2=171\\x=3\sqrt{19} =13.08

4 0
3 years ago
Identify the vertical shift, maximum and minimum values of each function
Delicious77 [7]

ANSWER

Vertical shift: 6 units up

Maximum value: 9

Minimum value: 3

EXPLANATION

The given since function is

y = 3(2 -  \sin(x))

Expand and rewrite to obtain,

y = 6 - 3 \sin(x)

Or

y =- 3 \sin(x) + 6

The vertical shift is 6 units up.

The maximum value is 6+3=9.

The minimum value is -3+6=3

5 0
3 years ago
Other questions:
  • A handler loads one item every 10 ?minutes, so 48 items are completed in his first day of work. his manager checks his work by r
    5·1 answer
  • A student is asked to calculate the volume, in milliliters, of 2 cups of oil. there are 225mL per cup. the student calculates th
    12·1 answer
  • crispy clover, a popular vegetarian restaurant, introduced a new menu that has 20% more dishes than the previous menu. the previ
    15·1 answer
  • Danny writes this sentence:
    10·2 answers
  • A SQUARE PYRAMID has a base length of 8in. The height of the pyramid is 2.4in. What is the SQUARE AREA of the pyramid? ***USE FO
    13·1 answer
  • Evaluate the absolute value of 60
    11·1 answer
  • I need help ASAP!!!!!
    9·2 answers
  • Three students sit in the first row. In the second row, 3 students sit behind each of those students, and so on. Write an expres
    10·1 answer
  • A local department store sells carpet in 4 sizes . Each carpet comes in 3 different qualities. One of the size come in 5 colors
    14·1 answer
  • Easy question i just dont know how to do it! help immediately will give brainliest thanks!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!