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
lana [24]
3 years ago
15

Please help me with this question

Mathematics
2 answers:
NeX [460]3 years ago
7 0
1. y^2 - (y^2 + 10y+ 25) = 20
2. -10y -25 = 20
3. -10y = 45
4. y = -4.5
lilavasa [31]3 years ago
6 0
Y^2 - (y+5)^2 = 20
starting with (y+5)^2 that's y^2 + 5y + 5y + 25
then you change the signs and get
y^2 - y^2 - 10y - 25 = 20
so -10y = 45 >> 10y = -45 >> y = -4,5
answer: A

You might be interested in
Help!!! Write and equation in point-slope form and slope-intercept for each line. Passes through (2,2) , slope =3
professor190 [17]

Okay here it is

Y- 2 = 3 (X- 2)


And do you have the Y intercept? Because so far your slope intercept equation is

Y = 3x + ____


6 0
3 years ago
Domain of (1)/(x^(2)+5x)
SCORPION-xisa [38]
The answer could be, (5,0)
6 0
3 years ago
Mercury is the closet planet to the Sun at a distance of 36 million miles. The closest star to the Sun is Proxima Centauri, whic
const2013 [10]
So, if you are trying to convert lightyears to miles, you'll do so with this formula:
mi= (ly)* 5.9e^12, or 59,000,000,000,000. so it would be:
miles=(4.24)(5.9e^12)= roughly 2.5e^13   so Proxima Centauri is   250,000,000,000,000 miles from the Sun
To convert miles to lightyears, you'll just switch them around:
lightyears= (3.6e^6) / (5.9e^12)
Mercury is roughly 0.000006123880 lightyears from the Sun
6 0
3 years ago
Of the 240 students eating lunch, 96 purchased their lunch and the rest brought a bag lunch. What is the ratio of students purch
Irina-Kira [14]

Answer:

96:144

Step-by-step explanation:

Since there are 240 students and the known value is 96 students buying lunch, you simply subtract the two numbers.

240 - 96 = 144

There are 144 students bringing bag lunch.

The ratio is asking students purchasing  lunch to students bringing a bag lunch, which would be 96:144

The simplified answer is 2:3

To get this, divide 144 by 96

This, in turn, would give you in answer of 3/2 which can be inversed to get the right answer

8 0
3 years ago
Write <img src="https://tex.z-dn.net/?f=3x%5E%7B2%7D%20-x-3%2Bx%5E%7B3%7D" id="TexFormula1" title="3x^{2} -x-3+x^{3}" alt="3x^{2
Elza [17]

Answer:

Standard form: x^3+3x^2-x-3

Leading coefficient: 1

Step-by-step explanation:

3x^2-x-3+x^3=\\x^3+3x^2-x-3

The leading coefficient is 1 because the leading term is x^3.

5 0
2 years ago
Other questions:
  • I need help on steps part c and d. I did a and b already.
    8·1 answer
  • Ann has 12 game cards. She wants to deal each of 5 players the same number of cards. How many cards will each player get? How ma
    13·2 answers
  • Please help asap<br> Explain your answer
    11·1 answer
  • How many meters of fencing will Steve need
    5·2 answers
  • Write the number 110 as a sum of hundreds and tens
    11·1 answer
  • The cross-sectional areas of a right pyramid and a right cylinder are congruent. The pyramid has a height of five units, and a r
    9·1 answer
  • The number of people arriving for treatment at an emergency room can be modeled by a Poisson Distribution with a rate parameter
    10·1 answer
  • If Chang jogs one lap around the inside track, how far does he jog​
    14·2 answers
  • У + 8 = (x — 1)
    15·1 answer
  • 6+12x2-18 please answer
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!