All categories

3 years ago

Help with a problem again please

Mathematics

2 answers:

lys-0071 [83]3 years ago

6 0

Answer:

$\huge\boxed{Option \ 3 : (fg)(x) = 9x^3+27x^2}$

Step-by-step explanation:

$f(x) = 3x+9\\g(x) = 3x^2$

Multiplying both

$(fg)(x) = (3x+9)(3x^2)\\(fg)(x) = 9x^3+27x^2$

Talja [164]3 years ago

4 0

Answer:

9x³ + 27x²

Step-by-step explanation:

What the question is asking is to multiply f(x) and g(x) together:

Step 1: Write out expression

(fg)(x) = 3x²(3x + 9)

Step 2: Distribute

(fg)(x) = 9x³ + 27x²

You might be interested in

10 points

agasfer [191]

Answer:

Step-by-step explanation:

6 0

3 years ago

Helpppp please will give brainliest

-Dominant- [34]

'See the attachment....

4 0

3 years ago

Is 1.875 a terminating decimal

vampirchik [111]

Answer:

Because they are fractions, any rational number can also be expressed in decimal form. Any rational number can be represented as either: a terminating decimal: 158=1.875 15 8 = 1.875 , or. a repeating decimal: 411=0.36363636⋯=0.

Step-by-step explanation:

Terminating decimals are those numbers which come to an end after few repetitions after decimal point. Example: 0.5, 2.456, 123.456, etc. are all examples of terminating decimals.

I tried my best on explaining, sorry if it didn't help.

5 0

3 years ago

Calculate the midpoint between (2,-5) and (4, -7).

balandron [24]

The midpoint between (2,-5) and (4, -7) is Option D.(3-6)

Step-by-step explanation:

Given:

Points (2,-5) and (4, -7)

To Find:

Midpoint of the points=?

Solution:

The midpoint that lies between the two points is given by

$(x_m, y_m) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

Where

$(x_m, y_m)$ = coordinates of the midpoint

$(x_1, y_1)$ = coordinates of the first point

$(x_2, y_2)$ = coordinates of the second point

we have,

$x_1= 2$

$y_1= -5$

$x_2= 4$

$y_2= -5$

Substituting the values in the mid point formula,

$(x,y)=(\frac{(2+4)}{2},\frac{(-5-7)}{2})$

$(x,y)=(\frac{(6)}{2},\frac{(-12)}{2})$

(x,y)=(3,-6)

5 0

4 years ago

If a tower casts a shadow 11 feet long the distance from the top of the tower to the end of the shadow is 61 feet .. How many fe

Alexeev081 [22]

Pythagorean theorem
the shadow legnth=bottom leg
legnth from top of tower to end of shadow=hypotounuse
height of tower=vertical leg

a^2+b^2=c^2
a and b are legs
c=hypotonuse

11^2+b^2=61^2
121+b^2=3721
minus 121 both sides
b^2=3600
sqrt both sides
b=60

height of toer is 60 feet

3 0

3 years ago