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
Pie
4 years ago
8

Without his pencil or calculator, Joey knows that 2x³+3x²− 1 = 0 has at least one real solution. How does he know?

Mathematics
1 answer:
vova2212 [387]4 years ago
6 0

Answer: Find the discriminant

Check explanation

Step-by-step explanation:

b^2-4ac

if it is equal to 0 there is no solution

Greater then 0 there is 2 real solution

Less then 0 there is 1 real

3^2-4(2*-1)

9-4(-2)

9(8)

72 there is at least one real solution

You might be interested in
What is 3 and 4/6 of mins is equal to how many seconds​
frez [133]

Answer:

220 seconds

explaination:

3 minutes is 180 seconds and 4/6 of a minute means 40 out of 60 seconds so 180 plus 40 is 220

8 0
3 years ago
What is the total amount and the amount of intrest earned on 5,000 at 8% for 20 years
oksian1 [2.3K]
I think it would be 5005.08 .i hope this has helped you
5 0
3 years ago
1. Find f(6)<br> 2. For what values of x is f(x) = 0?
Varvara68 [4.7K]

Answer:

f(6) = -5

f(x) = 0 and x=1 and x=5

Step-by-step explanation:

f(6) is the value when x=6

looking at the graph when x=6    f(6) = -5

f(x) = 0  means the y value is 0  This occurs when x = 1 and x=5

4 0
4 years ago
Aidan and ethan were solving math problems together for homework adian did 410×10 to the fourth power would have 4 zeros in the
agasfer [191]

Answer:

No.

Step-by-step explanation:

410•10=4100 and 4100=41•100. We just need to focus on the 100. 100•100•100•100=100,000,000 which has 8 zeros, not 4 zeros.

7 0
3 years ago
From the top of a lighthouse 200 feet high, the angle of depression of a boat is 22°. Find the distance from the boat to the foo
Soloha48 [4]

Answer:

495 feet

Step-by-step explanation:

tan22° = 200/d

so, d = 200/tan22°

Then, d = 495.0173707 => 495 feet to the nearest foot

:)>

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the area of a pentagon with apothem of about 10.3
    12·1 answer
  • Help please .........
    15·1 answer
  • Use the zeros of the following quadratic to find the x-value of the vertex.
    15·2 answers
  • What is a great answer for 5 plus negative 4
    6·1 answer
  • How many smaller rectangles are there in the area model 27 x 83
    13·1 answer
  • Can anybody help me pls
    12·2 answers
  • A triangle flower bed has a perimeter of 15cm the drawing has a scale of 1:200. What is the perimeter of the actual flower bed
    13·1 answer
  • Can someone help I don’t understand
    6·2 answers
  • At the start of 2017 there are 4000 fish in a lake. Each year, the number of fish increases by 20% of 4000.
    5·1 answer
  • What is a good estimate for 280% of 30? Explain.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!