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
aliina [53]
4 years ago
7

Help with question 47 please

Mathematics
1 answer:
geniusboy [140]4 years ago
8 0
\bf (x-y)^2\implies x^2-2xy+y^2\qquad 
\begin{cases}
x^2=25\\
x=\sqrt{25}\\
x=5\\
-----\\
y^2=9\\
y=\sqrt{9}\\
y=3
\end{cases}
\\\\\\
(25)-2(5)(3)+(9)\implies 25-30+9
You might be interested in
I need your help....pleeeease!
WINSTONCH [101]

Answer:

112

Step-by-step explanation:

just add all angles

3 0
4 years ago
I need help with Number 12 is heard
tia_tia [17]

Answer:

its d

Step-by-step explanation:

you set it up like a fraction  then you cross multiply then divide which is 6 then you add 8+6=14

x        75

---       -----

8          100

8 0
3 years ago
Read 2 more answers
A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of
slavikrds [6]

Answer:

The height of the cone h = 27(x^4)y

Step-by-step explanation:

Firstly, we calculate the volume of the cylinder.

Mathematically, the volume of the cylinder is pi * r^2 * h

using the radius x and height y

The volume V of the cylinder is ;

V = pi * x^2 * y

Now we know they have the same volume V, the formula for the volume of a cone is ;

1/3 * pi * r^2 * h

Substituting the values of r to be 1/3x and the height which is not given here left as h, we have the volume of the cone to be;

V = 1/3 * pi * (1/3x)^2 * h = pi * x^2 * y

The pi gives way as it cancels out on both sides and we have the following;

h/27x^2 = x^2y

Mathematically h = x^2 * y * 27x^2

h = 27(x^4)y

p.s: I personally feel the radius of the cone was to be given as x/3 and not 1/3x . It is in that way we can have the height of the cone purely in y terms and no x

8 0
3 years ago
Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Divide
IgorC [24]

Answer:

The answer is option 2.

Step-by-step explanation:

Firstly, you must factorize the possible expressions :

\frac{ {x}^{2} - 2x - 15 }{x - 3}  \div  \frac{x - 5}{ {x}^{2} - 9 }

=  \frac{(x - 5)(x + 3)}{x - 3}  \div  \frac{x - 5}{(x - 3)(x  + 3)}

Next you have to divide by converting to multiplication :

= \frac{(x - 5)(x + 3)}{x - 3}  \times  \frac{(x - 3)(x + 3)}{x - 5}

Lastly, you can cut out the similar expressions :

=  \frac{(x - 5)(x + 3)(x - 3)(x + 3)}{(x - 3)(x  -  5)}

=  {(x + 3)}^{2}

7 0
3 years ago
868 is greater than or less than 887
jeyben [28]
The answer for this is less than 887
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 2757 times 14? Show your work
    7·2 answers
  • Can you please help answer this ​
    6·1 answer
  • In 20 words or fewer, how many solutions does x^2 -36=0 have?What values of x make the equation true?
    5·1 answer
  • An ice cream factory makes 450 quarts of ice cream in 10 hours. How many quarts could be made in 24 hours
    6·1 answer
  • The mean of five numbers is 8.
    14·1 answer
  • Jane worked 38 hours at the grocery store last week and made $296.40. If she works three less hours this week than she did last
    12·1 answer
  • True or False<br><br> In order to multiply powers with the same base, we add their exponents
    9·2 answers
  • What two things do you NEED to write an equation in point-slope form?
    8·2 answers
  • Ethan ate 4/8 of his sandwich Andy ate 1/2 of his sandwich the sandwiches are the same size.
    8·1 answer
  • PLEASE PLEASE PLEASE HELP! I WILL GIVE BRAINLIEST
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!