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
Anton [14]
3 years ago
13

What are the solutions to the following system of equations? y = x2 + 12x + 30 8x – y = 10

Mathematics
1 answer:
atroni [7]3 years ago
7 0
We are given with two solutions: y = x2 + 12x + 30 and 8x – y = 10 and is asked to determinte the solutions of the system of equations. We get y in the second eqn which is equal to 8x -10. we substitute this to first eqn resulting to 
8x-10 = x^2 + 12 x + 30. this is a second order equation. x is equal to -2 + 6i and -2 - 6i.
You might be interested in
Tamika wants to double the volume of a square pyramid. What should she do?
ella [17]
To efficiently double the volume of a square pyramid, you need to double the height of the pyramid. 

<span>V = (1/3)Ah where A is the area of the base. If you double the height and leave A unchanged, the volume will also be doubled (replace h with 2h in the formula).</span>
7 0
3 years ago
Read 2 more answers
Solve 5x^2 - 7x+2 -0 by completing the square. What are the solutions?
trapecia [35]

5<em>x</em>² - 7<em>x</em> + 2 = 0

5(<em>x</em>² - 7/5 <em>x</em>) + 2 = 0

5(<em>x</em>² - 7/5 <em>x</em> + 49/100 - 49/100) + 2 = 0

5(<em>x</em>² - 2 • 7/10 <em>x</em> + (7/10)²) - 49/20 + 2 = 0

5(<em>x</em> - 7/10)² - 9/20 = 0

5(<em>x</em> - 7/10)² = 9/20

(<em>x</em> - 7/10)² = 9/100

<em>x</em> - 7/10 = ± √(9/100)

<em>x</em> - 7/10 = ± 3/10

<em>x</em> = 7/10 ± 3/10

<em>x</em> = 10/10 = 1   or   <em>x</em> = 4/10 = 2/5

6 0
3 years ago
Please need help with this question anyone ?
Zina [86]

Answer:

106 = 1,000,000 x 3.63

Step-by-step explanation:

a = 3.63 (Please notice any zeroes on the end have been removed)

b = 6

3.63 x 106

Check your work:

106 = 1,000,000 x 3.63 = 3,630,000

4 0
3 years ago
Please help me. I’ll mark you as brainliest if correct
scZoUnD [109]

Answer:

b = -18

Step-by-step explanation:

(3 + 4i) (-3-2i)

When we foil:

-9 + -6i + -12i + -8i^2

-8i^2 = +8

Combine like terms:

-1 + -18i

7 0
3 years ago
Is my answer correct? It's a mean, median, and mode question.
Serjik [45]
A. Mean

Mean = Total / How many numbers there are

City A- Add all the numbers:

4 + 3.5 + 5 + 5.5 + 4 + 2 = 24

There are 6 numbers.

24 / 6 = 4

Mean = 4 for City A

City B- Mean:

Add all the numbers:

5 + 6 + 3.5 + 5.5 + 4 + 6 = 30

There are 6 numbers.

30 / 6 = 5

Mean = 5 for City B

B. MAD(Don't know this part)

C. Median

City A- Median:

There are 2 middle numbers.

They are 5 and 5.5

5 + 5.5 = 10.5

10.5 / 2 = 5.25

Median = 5.25 for City A

City B- Median:

The 2 middle numbers are 3.5 and 5.5

3.5 + 5.5 = 9

9 / 2 = 4.5

Median = 4.5 for City B.

Answers:

a. The mean for City A is 4. The median for City B is 5.
b. Don't know MAD
c. The median for City A is 5.25. The median for City B is 4.5

Hope this helped☺☺



5 0
3 years ago
Other questions:
  • What is the missing expression? x 8 + 3x 5 = x5(_____)
    7·2 answers
  • The relationship between the base and rate a plumber charges and his hourly fee is modeled by the linear function f (x) = 25x +
    8·1 answer
  • The planet mercury takes 56.6 earth days to rotate once around its axis. About how many times does it rotate around its axis dur
    5·1 answer
  • The larger of two numbers is 12 times the smaller number. if the sum of two numbers is 15,600, find the two numbers.​
    9·1 answer
  • A number cube with the numbers 1 through 6 is rolled. What is the probability of the number cube showing a 3 or a multiple of 3?
    11·1 answer
  • Evaluate the expression a + b for a=24 and b=13
    9·2 answers
  • The ratio of strawberries to bananas in a smoothie recipe are shown in the graph below.
    12·1 answer
  • Find the value of x 2x = 98² - 2²​
    9·2 answers
  • Meghan is attending a college where tuition is $6,600 per year. She received a $2,000 grant and her parents will give her anothe
    10·1 answer
  • Factor completely.<br> 3x^2 – 36x + 60
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!