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
tino4ka555 [31]
3 years ago
14

X^2 + 6x - 18 solve for x​

Mathematics
2 answers:
Simora [160]3 years ago
4 0

Answer:

x = - 3  ± √27 or if you want it in decimal form correct to  nearest hundredth:

x = -8.20, 2.20.

Step-by-step explanation:

x^2 + 6x - 18 = 0

this will not factor so we use completing the square:

x^2 + 6x = (x + 3)^2 - 9 so:

(x + 3)^2 - 9 - 18 = 0

(x + 3)^2 = 27

x+ 3 = ±√27

x = - 3  ± √27

Roman55 [17]3 years ago
4 0
The answer :X= 8.20
You might be interested in
Explain how to model the division of –24 by –4 on a number line.
Troyanec [42]
the negative - positive
- 24/-4
24/4
6
7 0
3 years ago
Sally has 4 apples and maria has 9. How many apple to they have in total
krek1111 [17]

Answer:

13

Step-by-step explanation:

4 + 9

[ 9 + 2 = 11 ]

[ 11 + 2 = 13 ]

8 0
2 years ago
Read 2 more answers
Find the area of a space figure is its a rectagle with triangle on each end
vladimir1956 [14]
Formula for surface area of a triangular prism: bh+2ls+lb
(7*4)+2(8*5)+(8*7)
28+80+56
=164 cm^2
5 0
3 years ago
a company invested 25000 at an annual simple interest rate of 4.1% how much additional money must be invested at an annual simpl
Vlad [161]
We take interest+interest+interest to equal interest
0.041=4.1%(25000) the amount invested+0.056=interest they want=0.048 the total amount wanting to earn 4.8% and x is the added money to invest.
0.041(25000)+0.056x=0.048(25000+x)
1025+0.056x=1200+0.048x
subtract the 0.048 from both sides
1025+0.008x=1200+x
Subtract the 1025 from both sides
1025-1025+0.008=1200-1025+x
0.008x=175+x
Now divide 175 by 0.008
x=21,875
8 0
3 years ago
Help I need help I’m horrible at math! Thanks
svetoff [14.1K]

Answer:

with what I am to lol

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for x. <br><br> 89(54x−36)+2=−34(−40+16x)+90x
    9·1 answer
  • What metric unit would you use to measure the length of a football field?
    15·1 answer
  • The regular price of a winter coat is $65.50. It is on sale for $52.40. what is the percent decrease of the winter coat
    13·1 answer
  • PLEASSSEEEEEEEEEEE HELP ME EEEEEEEEEEEEEEE
    11·1 answer
  • a sporting complex charges $6 to use its facility. the expression 0.25b+6 models the total cost to hit b baseballs in the bating
    11·1 answer
  • What is the volume of a hemisphere with a radius of 30.8 cm, rounded to the nearest tenth of a cubic centimeter?
    8·1 answer
  • 3. The Ravine Flyer II is a steel and wood roller
    6·1 answer
  • Solve for X. Giving Brainliest
    5·1 answer
  • Given that 1 inch = 2.54 cm, how many centimeters are there in 5 feet? Answers may be written using decimal form and should be r
    6·1 answer
  • The ages (in years) of the eight passengers on a bus are listed below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!