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
NNADVOKAT [17]
3 years ago
6

How many really solutions does 4a^2 = 8a− 4 have

Mathematics
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

It has one solution which is a=1

You might be interested in
Suppose that 40 percent of the drivers stopped at State Police checkpoints in Storrs on Spring Weekend show evidence of driving
lesantik [10]

Answer:

a) 0.778

b) 0.9222

c) 0.6826

d) 0.3174

e) 2 drivers

Step-by-step explanation:

Given:

Sample size, n = 5

P = 40% = 0.4

a) Probability that none of the drivers shows evidence of intoxication.

P(x=0) = ^nC_x P^x (1-P)^n^-^x

P(x=0) = ^5C_0  (0.4)^0 (1-0.4)^5^-^0

P(x=0) = ^5C_0 (0.4)^0 (0.60)^5

P(x=0) = 0.778

b) Probability that at least one of the drivers shows evidence of intoxication would be:

P(X ≥ 1) = 1 - P(X < 1)

= 1 - P(X = 0)

= 1 - ^5C_0 (0.4)^0 * (0.6)^5

= 1 - 0.0778

= 0.9222

c) The probability that at most two of the drivers show evidence of intoxication.

P(x≤2) = P(X = 0) + P(X = 1) + P(X = 2)

^5C_0  (0.4)^0  (0.6)^5 + ^5C_1  (0.4)^1  (0.6)^4 + ^5C_2  (0.4)^2  (0.6)^3

= 0.6826

d) Probability that more than two of the drivers show evidence of intoxication.

P(x>2) = 1 - P(X ≤ 2)

= 1 - [^5C_0  (0.4)^0  (0.6)^5 + ^5C_1  (0.4)^1  (0.6)^4 + ^5C_2 * (0.4)^2  (0.6)^3]

= 1 - 0.6826

= 0.3174

e) Expected number of intoxicated drivers.

To find this, use:

Sample size multiplied by sample proportion

n * p

= 5 * 0.40

= 2

Expected number of intoxicated drivers would be 2

7 0
3 years ago
Beinggreat78 please answer fast
alexdok [17]
The perimeter is 48 units
6 0
2 years ago
Read 2 more answers
Use the digits 0 - 9 to fill in the blank. <br><img src="https://tex.z-dn.net/?f=243%20%5Cfrac%7B1%7D%7B5%7D%20%20%3D%20blank" i
Tresset [83]

Answer:

use 0-9 to fill in blanks

Step-by-step explanation:

8 0
3 years ago
Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be th
sesenic [268]

Answer:

The probability that the dogs are blue eyed and deaf is 13.02%.

Step-by-step explanation:

We are given the following information in the question:

P(Blue eyes) = 31%

P(Deaf) = 38%

P(Deaf | Blue eyes) = 42%

Formula for conditional probability:

P( A|B) = \displaystyle\frac{P(A \cap B)}{P(B)}

Now, let A be the event where the dog is deaf and B be the the event where dog is blue eyed.

P( \text{ Deaf}|\text{Blue eyes}) = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{P(\text{Blue eyes})}\\\\0.42 = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{0.31}\\\\P( \text{Deaf} \cap \text{Blue eyes}) = 0.42\times 0.31 = 0.1302 = 13.02\%

Hence, the probability that the dogs are blue eyed and deaf is 13.02%.

6 0
3 years ago
What is 14.79 as a rounded number​
Alex_Xolod [135]

Answer:

15

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What does writing a number in standard form mean in fourth grade math?
    14·1 answer
  • In a Monopoly market, a firm is a price maker since there are no close substitutes to the product. You are asked to find the com
    7·1 answer
  • A rectangular prism has a volume of 864 cubic units. How many cubic unit will fill the volume of the solid if they were packed w
    12·1 answer
  • How to express cos 3x in terms of cosx
    12·1 answer
  • Question 10 (45 points)<br> Which pair of triangles is congruent by ASA?<br> OL<br> th
    7·1 answer
  • Charlotte biked 4.8 × 104 meters. Mary biked 1.2 × 103 meters. How many times farther did Charlotte bike than Mary?
    14·1 answer
  • 12feet<br> 12 feet<br> HELP ME PLS SNJSNAKSKW
    11·1 answer
  • A restaurant offers 4 pasta meals, 5 seafood meals, and 6 burgers for its main courses. If a diner picks a meal at random, what
    7·1 answer
  • You are buying candles for an outdoor event. The candles you want come in boxes of 10, and you have enough money to purchase 20
    11·1 answer
  • What is the slope (rate of change) for the table?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!