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Sergio039 [100]
3 years ago
9

Idk how people understand algebra help me

Mathematics
1 answer:
Arturiano [62]3 years ago
3 0
To factor by a binomial, I like to use synthetic division (You can use long division but it is more work).


We are actually given a binomial because if -2 is a zero, the binomial is represented by (x- (-2)) or (x+2)

To use synthetic division,

-2 | 1  2  -9  -18
         -2   0   18
____________
      1  0  -9    0

Therefore, you know the constants of the equation which is equal to

1x^2 +0x -9x +0

x^2-9x

The full equation is equal to (x+2)(x^2-9x)
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100 points PLEASE HELP!!!
soldi70 [24.7K]

Answer:

C. −0.4, −0.4545454545

Step-by-step explanation:

between −1/2 and −1/3 so it is bet. -0.5 n -0.3333333333333333

only correct ans is C. −0.4, −0.4545454545

4 0
3 years ago
Ping is deciding what to choose for dinner from the menu. He can choose 1 of 3 pasta meals, 1 of 7 chicken meals, or 1 of 3 fish
lutik1710 [3]
Given:
1 of 3 pasta meals
1 of 7 chicken meals
1 of 3 fish meals

Simply multiply the total number of choices: 

3 x 7 x 3 = 63

Ping can choose a dinner meal in 63 ways.
5 0
4 years ago
Read 2 more answers
Data from Ivy Tech's advising center shows the wait times as a normal distribution with the average as 20 min and a standard dev
fiasKO [112]

9514 1404 393

Answer:

  68%

Step-by-step explanation:

According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.

Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.

  68% of students wait between 15 and 25 minutes

8 0
3 years ago
Box and tail set up for:
Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Assuming that all of the 255 sold seats were filled, then

[tex]\frac{sold}{total} *100\\[percent filled]

(225/260)*100=86.53%

100%-86.53%=13.4%

13.4% of seats are empty!

3 0
4 years ago
Mario claims that if the dinominator of a fraction is a prime number, then its decimal form is a repeting decimal. Do you agree?
vodomira [7]

Answer:

I do not agree because Mario's claim is not general.

Step-by-step explanation:

Prime numbers: These are a set of numbers that are divisible by 1 and itself only. Examples are: 2, 3, 5, 7. 11 etc.

And a  denominator is the divisor in a given fraction.

Considering the following fractions whose denominators are prime numbers:

\frac{2}{3} = 0.66666666...

\frac{1}{7} = 0.142857142

\frac{5}{11} = 0.45454545...

\frac{3}{13} = 0.23076923

\frac{1}{7} = 0.142857142

It could be observed that Mario's claim is not a general principle which is applicable to all fractions with a prime denominator. Thus, I do not agree with his claim.

4 0
3 years ago
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