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3 years ago

PLEASE help me??

Mathematics

1 answer:

ivolga24 [154]3 years ago

4 0

Let x = 5

f(5) = 4(5) - 11

f(5) = 20 - 11

f(5) = 9

Choice C

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PLEASE HELP! SO CONFUSED! 25 POINTS!!

MrRa [10]

Answer:

Step-by-step explanation:

(f • g)(x)

= f(x) × g(x)

= (x + 4)(3x² - 7)

each term in the second factor is multiplied by each term in the first factor , that is

x(3x² - 7) + 4(3x² - 7) ← distribute both parenthesis

= 3x³ - 7x + 12x² - 28

= 3x³ + 12x² - 7x - 28 ← in standard form

7 0

2 years ago

Factor the GCF:

IceJOKER [234]

The greatest common factor (GCF) is the product of the greatest common factors of the numerical coefficients and the variables involving x and y.

-12(x^4)y - 9x³y² + 3x²y³

-3x²y(4x² + 3xy - y²)

<span>Thus, the answer is letter A. </span>

7 0

3 years ago

You recently took a statistics exam in a large class. The instructor tells the class that the scores were Normally distributed,

Lunna [17]

Answer:

b. the area to the right of 2

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, which is also the area to the left of Z. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X, which is the area to the right of Z.

In this problem:

$X = 96, \mu = 72, \sigma = 12$

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

$Z = \frac{96 - 72}{12}$

$Z = 2$

Percentage who did better:

P(Z > 2), which is the area to the right of 2.

5 0

3 years ago

(b) A shopkeeper gives 20% discount on the marked price of a television set. The VAT amount at the rate of 13% is Rs. 2,600. Fin

iVinArrow [24]

Answer:

6.3

Step-by-step explanation:

i had the same question for school

6 0

2 years ago

Determine the radius of a circle with a circumference of 14 pi inches

ipn [44]

Answer:

the radius is 7

Step-by-step explanation:

circumference is equal to pi(d)

you said it is 14pi

all you have to do is divide d by 2 to get r

7 0

2 years ago