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
Readme [11.4K]
3 years ago
12

What are the solutions of the following system x2+y2=25 , 2x+y=-5

Mathematics
2 answers:
tia_tia [17]3 years ago
6 0
Y=5-2x
x^2 + (5-2x)^2 = 25

x^2 + 25-20x+4x^2 = 25

x^2 +4x^2-20x+25=25
5x^2 -20x=0

x=0 and y=5
BabaBlast [244]3 years ago
6 0

x^2+y^2=25

2x+y=-5

(0, -5) plug into equation 1 and 2 but you have to find what second ordered pair fills in for x^2+y^2=25 which would be (-4, 3). Reasoning is that-

-4^2=16 and 3^2=9 so 16+9=25

The Correct answer is C (0, -5) and (-4, 3)

You might be interested in
in a weakly connected graph. it is not possible to reach all other vertices from any one vertext (true) (false)
iVinArrow [24]
True it is true because you can reach the vertext at all times try it out my teacher told me right now check it our


4 0
3 years ago
Read 2 more answers
On Tuesday the mailman delivers 3 checks for $5 each and 2 bills for each .if you had a starting balance of $25 , what is the en
ycow [4]
5x3=15 25+15=40 40-10=30
6 0
3 years ago
Marcelis takes a taxi to the airport. The taxi charges $2 per mile and an initial fee of
Marizza181 [45]

Answer:

13 miles

Step-by-step explanation:

27.50- 1.50(fee)=26.00 26/2(2$per mile)=13 miles

4 0
3 years ago
PLEASE ANSWER THIS IM BEGGING YALL
Doss [256]

Answer:

33.16ft

Step-by-step explanation:

Sin 56° = x / 40ft

0.829 = x / 40ft

x = 40ft * 0.829

x = 33.16ft

4 0
3 years ago
Can someone pls help me / alguien me puede ayudar
user100 [1]

Answer:

The simplified expression is:

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8

Step-by-step explanation:

Given the expression

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a

=\frac{2}{5}y+\frac{1}{5}x-0.2y-6-2

\mathrm{Group\:like\:terms}

=\frac{2}{5}y-0.2y+\frac{1}{5}x-6-2

Add similar elements

=0.2y+\frac{1}{5}x-6-2

=0.2y+\frac{x}{5}-6-2

=0.2y+\frac{x}{5}-8

=0.2y+0.2x-8

Thus, the simplified expression is:

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8

6 0
3 years ago
Other questions:
  • What is the simplified form of x+8/4-x+5/4
    9·2 answers
  • What does m represent in the equation y=mx + b?
    7·2 answers
  • Calculate the probability of each of the following events. (a) {at most three lines are in use} .72 Correct: Your answer is corr
    7·1 answer
  • Write the word sentence as an equation. Then solve.
    13·2 answers
  • 1. Complete this statement: A polygon with all sides the same length is said to be ______. (1 point)
    14·2 answers
  • Quiz
    10·1 answer
  • Please help will mark BRAINLIEST
    10·1 answer
  • what is the total surface area of a right rectangular prism with a base of 2 cm by 3cm and a height of 6cm
    7·1 answer
  • Tiles with the numbers 1 through 9 are placed in a bag. What is the probability of choosing an even number that is greater than
    14·2 answers
  • I'll give brainliest if you help me!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!