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
NeX [460]
3 years ago
10

3.simplifyyyyyyyyyyyyyyyyyyy

Mathematics
2 answers:
Charra [1.4K]3 years ago
4 0

Answer:

C. 7

Step-by-step explanation:

garik1379 [7]3 years ago
4 0

Answer:

(3+√2)(3-√2) =  7

Step-by-step explanation:

We have given a expression.

(3+√2)(3-√2)

We have to simplify above expression.

We use difference formula to solve above expression.

(a-b)(a+b) =   a²-b²

(3+√2)(3-√2) =  (3)²-(√2)²

(3+√2)(3-√2) =  9-2

(3+√2)(3-√2) =  7 which is the answer.

You might be interested in
Lorine drew the model below to represent the equation 16 + 28 = blank x (4 + 7). A model with 4 rows of 4 squares and 4 rows of
Mrac [35]

Answer:

Missing Value Is 4 .

Step-by-step explanation:

According To The Question, We Have

  • A model with 4rows*4squares & 4rows*7squares

        Equation is 16+28 = X*(4+7)

        Solve the above Equation, We get 44=X*11 ⇔ X=4

3 0
3 years ago
A cylinder has a base radius of 7 in and a height of 20 in. What is its volume in cubic
GuDViN [60]

Answer:

3078.8 in cubed

3 0
3 years ago
Read 2 more answers
What is the length of bc?
zhuklara [117]

Answer:

15 units

Step-by-step explanation:

ΔABC is right with ∠C = 90° and AB the hypotenuse

using Pythagoras' identity on the triangle

AB² = AC² + BC² , hence

BC² = AB² - AC² = 17² - 8² = 289 - 64 = 225

⇒BC = \sqrt{225} = 15 units


8 0
3 years ago
If the discriminant of an equation is positive, which of the following is true of the equation?
Bumek [7]
D>0 that means it has two real solutions (unequal). 
<span>It can have one solution only if D=0 and complex solutions only if D<0. </span>

<span>D means discriminant

Answer: B it has two real solutions

hope this helps :)
</span>
3 0
3 years ago
the sum of the first three terms of a sequence Is 42 The fourth term is 24. find u1 and the common difference
e-lub [12.9K]

10=2d

Given:

The sum of the first three terms of a sequence Is 42.

The fourth term is 24.

To find:

The  u₁ and the common difference

Step-by-step explanation:

nth term of a sequence is

u_n=u_1+(n-1)d

where, u₁ is first term and d is common difference.

4th term is 24.

u_4=u_1+(4-1)d

24=u_1+3d           ...(i)

Sum of nth term of an AP is

S_n=\dfrac{n}{2}[2u_1+(n-1)d]

Sum of first three terms is 42.

S_3=\dfrac{3}{2}[2u_1+(3-1)d]

42=\dfrac{3}{2}[2u_1+2d]

Divide both sides by 3.

14=u_1+d          ...(ii)

On subtract (ii) from (i), we get

10=2d

5=d

Put d=5 in equation (ii).

14=u_1+5

14-5=u_1

9=u_1

Therefore, the first term is u_1=9 and common difference is d=5 .

6 0
3 years ago
Other questions:
  • I need to show my work &amp; have the correct answer, may someone help , I'm really bad at math
    8·1 answer
  • Here is the question !
    15·1 answer
  • Dan invests £8000 into his bank account.
    13·2 answers
  • Y = (x+2) (-X-1)<br> Answer the question using null law
    7·2 answers
  • Eight times the sum of a number and six is 80
    6·2 answers
  • a line represented by y = 3x − 1 and a line perpendicular to it intersect at r(1, 2). what is the equation of the perpendicular
    9·1 answer
  • Which of the following are solutions to the equation below? Check all that apply. 4x2 + 4x + 1 = 9​
    6·1 answer
  • The school water fountain can only fill 3/4 of a jug at a time. With this amount of water, Mr. Kern can water 3/8 of his plants.
    6·1 answer
  • PLEASE HELP!!!
    5·1 answer
  • Solve each system by elimintaion. x-y=11 2x+y=19
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!