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3 years ago

Evaluate the factorial expression. 19! 16!(3 – 1)!

Mathematics

1 answer:

krok68 [10]3 years ago

7 0

Answer:

I believe it would be 2907

Step-by-step explanation:

starting with (3-1)! you would get 2, then going on to 16! you would get 20,922,789,888,000, then multiplying that with 2 you would get 41,845,579,776,000, then moving onto the 19! you would get 121,645,100,408,832,000, now last but not least to devide 41,845,579,776,000 by 121,645,100,408,832,000, and to that you would get 2907 hope this helped!

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consider this quadratic equation x2+2x+7=21 the nuber of positive solutions to this equation are blank. the approximate value of

S_A_V [24]

Answer:

x²+2x+7-21=0

 x²+2x-14. =0

 x²+2x. =14

 x²+2x+1. =14+1

 (X+1)². =15

 X+1. =+/-√15

 X=-1+/-√15

X=-1+3.872983346207

 =2.872983346207(greatest solution) round it as possible

X=-1-3.872983346207

 =-4.872983346207

6 0

3 years ago

Help me with this question please anybody

ehidna [41]

Answer:

x = 19

Step-by-step explanation:

The work shown is almost complete. It can be finished by multiplying both sides of the equation by the inverse of the coefficient of x.

x-coefficient: -1/3

inverse of x-coefficient = 1/(-1/3) = -3

Then you have ...

$-3\left(-\dfrac{19}{3}\right)=-3\left(-\dfrac{1}{3}x\right)\\\\19=x\qquad\text{simplify}\\\\\boxed{x=19}$

6 0

1 year ago

Miguel tells his teacher that One-fifth is the same as 20%. Which best justifies Miguel’s answer?

Levart [38]

Answer:

5 goes into 100 twenty times, so 20% is the answer

hope it helps! :)

Step-by-step explanation:

7 0

3 years ago

A rock is thrown into a still pond. The circular ripple move outward from the point of impact of the rock so that the area of th

4vir4ik [10]

Answer:

$\approx 31.42 \text{ Square feet per minute}$

Step-by-step explanation:

Area of the Pond A= $\pi r^2$

The increase in the area of the pond as it moves outward is: $\frac{dA}{dt}$

$\frac{dA}{dt}=\frac{d}{dt}\pi r^2\\\frac{dA}{dt}= 2\pi r \frac{dr}{dt}$

Since the area of the circle formed increases at the rate of 100 square feet per minute.

$\frac{dA}{dt}$ = 100 Square feet per minute

When the radius, r = 5 feet, we want to determine the rate at which the radius is changing, $\frac{dr}{dt}$ .

$\frac{dA}{dt}= 2\pi r \frac{dr}{dt}\\100=2*5*\pi \frac{dr}{dt}\\\frac{dr}{dt} =\frac{100}{10 \pi} =10 \pi \approx 31.42 \text{ Square feet per minute}$

5 0

3 years ago

Wrie down the equation of the line that is parallel to 4x - 2y = 7 and passes through (9, -3)

EastWind [94]

Answer:

4x-2y =42 is the required equation

Step-by-step explanation:

given equation is,

4x-2y -7=0---------eqn1

parallel equation of given equation is

4x -2y+k =0-------eqn 2

now passing it through (9,-3), we get,

4×9 + 2×3 +k = 0

or,36+6+k =0

or,42+k =0

or, k= -42

putting the value of k in eqn2

4x-2y - 42=0

4x-2y = 42

4 0

3 years ago