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marin [14]
3 years ago
6

Solve the equation without the use of a calculator. please Help!!! Thank you!!! 5=x^2-4x

Mathematics
1 answer:
grin007 [14]3 years ago
8 0
For this question the answer is x= 5, -1
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I dont get this ............
Karo-lina-s [1.5K]

Answer:

i think these inequalities shows B

6 0
3 years ago
You flip an unfairly weighted coin 4 times. If the probability of getting a tail is 0. 38.
anygoal [31]

Answer:

0.84306608

Step-by-step explanation:

The probability of an event, e, occurring exactly r times over n trials follows the formula

(n combination r) * p^r * q ^ (n-r)

with p being the probability the event will occur and q being the probability the event will not occur.

I assume you have a calculator/can find one online that can do combinations.

Here, we want to figure out if you get:

- 0 tails

- 1 tail

- 2 tails

If you get 3 or 4 tails, we are getting more than the 2 tails desired

For 0 tails:

- p is the probability a tail will occur = 0.38

- we want it to occur 0 times, so r = 0

- q is (1-p) = 1- 0.38 = 0.62

- we have 4 trials, as we flip it 4 times

(n combination r) * p^r * q ^ (n-r) = (4 combination 0) * (0.38) ^0 * (0.62) ^(4-0) = 1 * (0.38) ^0 * (0.62) ^(4-0) = 0.14776336

For 1 tail:

- p = 0.38, q = 0.62 as with 0 tails

- r = 1, n = 4

(n combination r) * p^r * q ^ (n-r) = (4 combination 1) * (0.38) ^1 * (0.62) ^(4-1) = 4* (0.38) ^1 * (0.62) ^(4-1) = 0.36225856

For 2 tails:

- p = 0.38, q = 0.62 as with 0 tails

- r = 2, n = 4

(n combination r) * p^r * q ^ (n-r) = (4 combination 2) * (0.38) ^1 * (0.62) ^(4-2) = 6* (0.38) ^2 * (0.62) ^(4-2) = 0.33304416

add our 3 probabilities together

0.33304416 + 0.36225856 + 0.14776336 = 0.84306608 as our answer

8 0
1 year ago
Factor out the GCF of the three terms, then complete the factorization of 6x3 + 6x2 – 1202.
Fittoniya [83]

Answer : 2( 3x^3 +3x^2 - 601 )

3 0
3 years ago
What is the equation of 1/2x =5/6
LekaFEV [45]

Step-by-step explanation:

\frac{1}{2}x =  \frac{5}{6}

2 \times  \frac{1}{2}x = 2 \times  \frac{5}{6}

x =  \frac{5}{3}

4 0
3 years ago
Find the number of possible outcomes in the sample space.
nikitadnepr [17]
I believe it’s A.

good luck!!
8 0
3 years ago
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