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2 years ago

3x to the 2nd power +9x +6 use FOIL

Mathematics

1 answer:

Advocard [28]2 years ago

3 0

The answer if you need it factored is 3(x+2)(x+1)

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What is the value of x?

xxMikexx [17]

Answer:

$x = 52$

Step-by-step explanation:

<u>Step 1: Create an expression</u>

$2x + 76 = 180$

<u>Step 2: Subtract 76 from both sides</u>

$2x + 76 - 76 = 180 - 76$

$2x = 104$

<u>Step 3: Divide both sides by 2</u>

$\frac{2x}{2} = \frac{104}{2}$

$x = 52$

Answer: $x = 52$

3 0

2 years ago

Read 2 more answers

SOMEONE HELP ME ASAP!!!!!!

Yakvenalex [24]

Answer:

Step-by-step explanation:

$\dfrac{4-2}{2^{-3}}=\dfrac{2}{2^{-3}}\qquad\text{use}\ \dfrac{a^n}{a^m}=a^{n-m}\\\\=2^{1-(-3)}=2^{1+3}=2^4=16$

5 0

3 years ago

Andy is always looking for ways to make money fast. Lately, he has been trying to make money by gambling. Here is the game he is

Lorico [155]

Answer:

Option B.

Step-by-step explanation:

Cost of game = $5.00

If they draw a face card, they win $10.00 (i.e. they get their $5.00 back and get an extra $5.00).

Winning amount = $5

Number of face cards = 12

Probability of getting a face card =

If they draw an ace, they win $20.00 (i.e. they get their $5.00 back and get an extra $15.00).

Winning amount = $15

Number of ace = 4

Probability of getting an ace =

Any other draw they lose their money.

Number of other card (Exclude ace and face cards) = 52-4-12=36

Probability of getting other cards =

The expected money value playing this game is

E(x) = 5 × P(face cards) + 15 × P(Ace) - 5 × P(Other cards)

The expected money value playing this game is -$1.15

Therefore, the correct option is B.

7 0

3 years ago

Find the missing length <br> . Leave your answers in simplest radical form

Eddi Din [679]

Use Pythagorean theorem:

$x^2+5^2=(\sqrt{122})^2\\\\x^2+25=122\qquad\text{subtract 25 from both sides}\\\\x^2=97\to x=\sqrt{97}$

4 0

2 years ago

Suppose it is known that the distribution of purchase amounts by customers entering a popular retail store is approximately norm

Ket [755]

Answer:

69.15% probability that a randomly selected customer spends less than $105 at this store

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 100, \sigma = 10$