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
seraphim [82]
3 years ago
5

Help please please !!!!!!!

Mathematics
1 answer:
lyudmila [28]3 years ago
7 0
In each case, you can use the second equation to create an expression for y that will substitute into the first equation. Then you can write the result in standard form and use any of several means to find the number of solutions.

System A
  x² + (-x/2)² = 17
  x² = 17/(5/4) = 13.6
  x = ±√13.6 . . . . 2 real solutions

System B
  -6x +5 = x² -7x +10
  x² -x +5 = 0
The discriminant is ...
  D = (-1)²-4(1)(5) = -20 . . . . 0 real solutions

System C
  y = 8x +17 = -2x² +9
  2x² +8x +8 = 0
  2(x+2)² = 0
  x = -2 . . . . 1 real solution
You might be interested in
Which of the graphs below would result if you made the leading term of the
Anettt [7]

Answer:

A%7.2= ( 7.5№) =(+--+) this is the best answer

3 0
3 years ago
Read 2 more answers
Which is a point on the circle whose center is (0, 0) and whose radius is 5?
Jet001 [13]

Answer:

its letter c its (3,4) I hope this help

7 0
3 years ago
Read 2 more answers
Jenna buys 12 lb of meat. Some of the meat is chicken and costs $1.90/lb. The rest is beef, which costs $4.30/lb. She spends a t
Softa [21]
If the number of pounds of chicken is represented by c, then the number of the pounds of beef is 12 - c. The equation that best represent the given conditions above based on the total amount that Jenny spent is,
                              1.9c + 4.3(12 - c) = 34.8
The answer is letter D. 
8 0
3 years ago
Is 5 3/8 greater than 5 4/10
Lostsunrise [7]

Answer:

False

Step-by-step explanation:

5 3/8 > 5 4/10

4 0
3 years ago
Suck at maths! HELP!
Lynna [10]

Answer:

Step-by-step explanation: you can use a protractor if you have 1 or seeing as the bottom left is 65, the bottom right will be the same, mostly a guess but half 65 and try that.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The weights of 1,000 men in a certain town follow a normal distribution with a mean of 150 pounds and a standard deviation of 15
    13·1 answer
  • What is the value of ?<br> 4(5x-2)=2(9x+3)
    15·2 answers
  • A Chemist has 100g of 25% acid solution. How much of these solution he needs to drain and replace with 70% acid solution to obta
    9·1 answer
  • PLS HELP <br><br> What is the correct graph for 3y-2x=6
    6·1 answer
  • A basketball team Hopes to win at least 3 games for every 2 lost during the season.if there are 30 games scheduled how many game
    6·1 answer
  • Help!! Number 39 please
    12·2 answers
  • Write the equation of each line in slope-intercept form
    5·1 answer
  • What is the product?<br> 30(80-65)
    7·1 answer
  • Find the answer -1=1/2a+9​
    15·1 answer
  • Suppose that x and y vary inversely and x = 1 when y =5. Write a function that models the inverse variation Graph the function a
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!