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
fomenos
3 years ago
13

Solve the following system of equations and show all work. y = 2x^2 +9x y = 4x + 25

Mathematics
1 answer:
Genrish500 [490]3 years ago
7 0

Answer:

x = 5/2 thì y = 35 và x = -5 thì y = 5

Step-by-step explanation:

thay y = 4x + 25 vào phương trình y = 2x ^ 2 + 9x ta có:

4x + 25 = 2x ^ 2 + 9x

⇒2x ^ 2 + 5x - 25 = 0

⇒ x = 5/2 và x = -5

thay x = 5/2 vào phương trình y = 4x + 25 ⇒ y = 4*(5/2) + 25 = 35

thay x = -5 vào phương trình y = 4x + 25 ⇒ y = 4*(-5) + 25 = 5

You might be interested in
A comparative box plot is shown for two data sets. Which statement is true? (Please help me and please if you're not 100% sure)
Elza [17]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
How do i solve a triangles area​
shusha [124]

Answer:

Area = 1/2 Base x height

Step-by-step explanation:

To find the area of a triangle, multiply the base of the height and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into two triangles.

6 0
3 years ago
What is 305 divided by 1000?
valina [46]
The answer is 0.305. All you have to do is move the decimal place three times to the left.
3 0
3 years ago
Read 2 more answers
Doria swam the 100-meter backstroke in 58.329 second. How do you express this time in words.show your work:
alex41 [277]

To solve this problem you must apply the proccedure shown below:

1. You have that the time, given in the problem above, is written in decimal form.

2. To express this time in words, you must begin from left to right. First, write the digits before the point (58) and after the points (329) as whole numbers. Then, finish it writting the place name of the last digit, as following:

(Note: The point is expressed as "and").

58.329: Fifty eigth and three hundred twenty nine thousandths.

Therefore, the answer is: Fifty eigth and three hundred twenty nine thousandths.

7 0
2 years ago
Can u find the slope intercept form pls?​
Aleks [24]

Answer:

y=(-3/4)x-2

Step-by-step explanation:

slope intercept is y=mx+b

y--5=-3/4(x-4)

y+5=-(3/4)(x-4)

y+5=-(3/4)x-2

y=(-3/4)x-2

6 0
2 years ago
Other questions:
  • What is the area of this figure
    9·2 answers
  • ASAP!!!
    11·1 answer
  • What is the inverse of this function? <br> f(x)=y=3x/8+x
    10·1 answer
  • Write the first 4 terms for this sequence t(n)=4.5n-8
    12·2 answers
  • Identifying the strengths of a hero shows which character trait?
    5·2 answers
  • A recipe requires ¾ cup of nuts for 1 batch of muffins. Write the number of batches of muffins that can be made using 7 ½ cups o
    13·1 answer
  • Sebastian needs to fill a container that holds 3/4 liters of water using bottles that hold 1/3 liters of water. How many liters
    14·2 answers
  • Answer for x.<br><br> 1. 3x - 10 = -21<br><br> 2. -22 - 4x = 12
    10·1 answer
  • Heyo! I need some help, please. What is the x coordinate if (x, 17) is on a line that passes through the points (1, 2) and (-1,
    8·2 answers
  • Damon is 12 3 4 years old. Dwight is 1 1 2 years younger than Damon and Jane is 1 1 5 years younger than Dwight. How old is Jane
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!