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
Romashka-Z-Leto [24]
2 years ago
10

Hii! I need some help, would anyone mind helping me?

Mathematics
1 answer:
Kisachek [45]2 years ago
8 0

Step-by-step explanation:

{x}^{2}  - 14x  - 25 {y}^{2}  + 100y = 76

Factor by grouping,

( {x}^{2}  - 14x)   - (25 {y}^{2}  - 100y) = 76

Complete the square, with the x variables,

( {x}^{2}  - 14x + 49)  - (25 {y}^{2}  - 100y) = 125

Factor out 25 for the y variables

( {x}^{2}  - 14x + 49) - 25( {y}^{2}  - 4y) = 125

Complete the square

( {x}^{2}  - 14x + 49) - 25( {y}^{2}  - 4y + 4) = 25

Simplify the perfect square trinomial

(x - 7) {}^{2}  - 25(y - 2) {}^{2}  = 25

Make the right side be 1 so divide everything by 25.

\frac{(x - 7) {}^{2} }{25}  -  (y - 2) {}^{2}  = 1

Here our center is (7,2).

You might be interested in
0/1<br> 33 is 90% of what number? Round to the tenths place.
zysi [14]
Bsbdndzbzzjsjjakkakak
8 0
3 years ago
If 5-3(2a+1)=-4+10, what is the value of a+2​
givi [52]

\\ \rm\Rrightarrow 5-3(2a+1)=-4+10

\\ \rm\Rrightarrow 5-6a-3=6

\\ \rm\Rrightarrow -6a+2=6

\\ \rm\Rrightarrow -6a=6-2

\\ \rm\Rrightarrow -6a=4

\\ \rm\Rrightarrow a=\dfrac{4}{-6}

\\ \rm\Rrightarrow a=\dfrac{2}{-3}

Now

\\ \rm\Rrightarrow a+2

\\ \rm\Rrightarrow \dfrac{2}{-3}+2

\\ \rm\Rrightarrow \dfrac{2-6}{-3}

\\ \rm\Rrightarrow \dfrac{-4}{-3}

\\ \rm\Rrightarrow \dfrac{4}{3}

7 0
2 years ago
Read 2 more answers
I need help what is the surface area of the triangular pyramid in the figure?
mr_godi [17]

Answer:

89.4 in²

Step-by-step explanation:

I'm too lazy to explain.

8 0
2 years ago
SOLVE.PLS HELP HURRY I PUT TEN POINTS! click to see full and the lines mean the estimate here is the question:estimate then add
dimaraw [331]
The first one is 17 13/15 the second one is 22 1/20
4 0
3 years ago
What is the volume of this right triangular pyramid?
Nady [450]
The volume of a triangular pyramid can be found using the formula V = 1/3AH where A = area of the triangle base, and H = height of the pyramid or the distance from the pyramid's base to the
4 0
3 years ago
Other questions:
  • I will fail if I get this wrong :(
    7·1 answer
  • 28-35 or just answer what are subsets?
    5·1 answer
  • How do you solve this equation, 5s^2-14s-3=0
    15·1 answer
  • What is the median of the following numbers?<br> 8,1,2,6,1,4<br> Stuck? Watch a video or use a hint.
    12·2 answers
  • Please help me answers this question
    10·1 answer
  • it costs $13 for admission to an amusement park, plus $1.50 for each ride. if you have a total of $35.50 to spend, what is the g
    9·2 answers
  • Justine received a bonus check from her work for $6000. She is going to deposit the money into her bank account that receives 5%
    14·1 answer
  • sarah bought 3 blouses at one price and 2 blouses prices $3 below the others. The total cost was $91.50. Find the price of the b
    15·1 answer
  • -12 (-5/6) (-2/15) How do I solve this question I am stuck on an assignment
    13·1 answer
  • 8 (2/3) divided by (-104/33)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!