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
vovikov84 [41]
3 years ago
14

Hey can anyone help plz?

Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

We have been given an expression 2\sqrt{28} -5\sqrt{63} and we are asked to find correct option from the given choices.

Let us simplify our expression.  

2\sqrt{28} -5\sqrt{63}

First of all we will take out perfect squares from our radical.

2\sqrt{7\cdot4} -5\sqrt{7\cdot9}

2\sqrt{4} \cdot\sqrt{7} -5\sqrt{9} \cdot\sqrt{7}

2\cdot2\sqrt{7} -5\cdot3\sqrt{7}  

4\sqrt{7} -15\sqrt{7}

-11\sqrt{7}

Our expression simplifies to -11\sqrt{7}, therefore, option C is the correct choice.

You might be interested in
Find the area of the shaded regions:
White raven [17]

Answer:

41 Degrees

Step-by-step explanation:

So basically you add the 72 and the other 72 to get 148.You obviously know the angle in between 72 and 72 is a right angle or 90 degrees.Then you add 148 and 90 to get 238.Then 360 - 238 is 122.Now you know all the angles.So we have to ask ourselves what is 148/360 simplified.It is 37/90.Now that we know that and we know that the radius is 10.We have to find the regular area which is 10 times 10 which is 100.Finally we need to figure out what part of 100 is 37/90 and it is 41.111111111111.Rounded it is 41.

4 0
3 years ago
Read 2 more answers
F(x)=bx^2+32 For the function f defined above, b is a constant and f(2)=40. What is the value of f(-2)?
zhuklara [117]

Answer:

f(-2) = 0

Step-by-step explanation:

Given that:

f(x) = bx^2 + 32

f(2) = b(2)^2 + 32

f(2) = 4b + 32

f(2) = 4b = -32

f(2) = b = -32/4

f(2) = b = -8

Thus;

f(-2) = -8(-2)^2 + 32

f(-2) = -8(4) + 32

f(-2) = -32 + 32

f(-2) = 0

6 0
3 years ago
Read 2 more answers
What is the equation in point-slope form for the line parallel to y = –2x + 10 that contains J(6, 8)?
Liula [17]
Y-y1= m(x1-x2)
using this formula
the answer is d
because slope has to remain the same if its parallel

5 0
3 years ago
Select the two values of x that are roots of this equation.<br> x2 - 5x + 2 = 0
Margaret [11]

Answer:

C and D

{x}^{2}  - 5x + 2 = 0 \\ x =  \frac{5± \sqrt{17} }{2}

8 0
3 years ago
Read 2 more answers
Special right triangles
fiasKO [112]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the inverse of the function f(x) =1/9x + 2?
    5·1 answer
  • Is 0.329 rational or irrational
    6·2 answers
  • Which equation is equivalent to log3(x+5)=2
    10·2 answers
  • Joshua receive a $70 gift card to use at a clothing store. He buys a pair of jeans for $36 and 8 pair of socks. He does not use
    14·1 answer
  • Last year a winter coat cost $175. This year the price increased 15%. What is the new price?
    9·1 answer
  • 1 1/4 x 1 1/3 plsss help
    6·2 answers
  • (9x3 − 48x2 + 13x + 3) ÷ (x − 5)
    8·1 answer
  • Which of the following are binomials? Check all that apply.
    11·1 answer
  • Which other sets are closed under addition
    9·1 answer
  • 1 and 2 are complementary angles. The measure of 1 is 54 . The measure of 2 is 6(x +1). Find the value of x.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!