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2 years ago

Help me please i need some help.

Mathematics

2 answers:

vovikov84 [41]2 years ago

6 0

Answer:

12 is the constant

Step-by-step explanation:

12 is the constant number because it doesn't have a variable that can change it

nexus9112 [7]2 years ago

5 0

Answer:

12 is your answer have a good day!!

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Use integration by parts to find the integrals in Exercise.<br> ∫xex dx.

Y_Kistochka [10]

Answer:

$xe^{x} - e^{x} +C$

Step-by-step explanation:

using the formular for integration by parts;

∫udv = uv -∫vdu ..............equ 1

in the equation below;

∫ $xe^{x}$

u=x , dv = $e^{x}$

du= 1 v= $e^{x}$

Substitute into equ 1

∫udv = $xe^{x}$ - ∫ $e^{x}dx$

∫udv = $xe^{x}$ - $e^{x} + C$

4 0

2 years ago

Your sock drawer has four white socks two brown socks and six black socks. You randomly pick two socks and get a matching pair o

dmitriy555 [2]

What a lucky day im having

3 0

2 years ago

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A diver dives from a 10m springboard. the equation f(t) = -4.9t² + 4t + 10 models her height above the pool at time t. When will

Gennadij [26K]

Answer:

At time t = 0.408 sec diver will be at maximum height

Step-by-step explanation:

We have given equation of the height $f(t)=-4.9t^2+4t+9$

We know that velocity is the rate of change of distance with respect to time

So $v=\frac{df(t)}{dt}=\frac{df(-4.9t^2+4t+10)}{dt}=-9.8t+4+0=-9.8t+4$

At maximum height velocity will be zero

So $-9.8t+4=0$

t = 0.408 sec

So at time t = 0.408 sec diver will be at maximum height

5 0

2 years ago

Adding/Subtracting rational expressions

Leona [35]

7]
6/(x-1)-5x/4
subtracting the above we put the fraction under the same denominator:
6/(x-1)-5x/4
multiplying the denominators we get:
4(x-1)
thus subtracting we get:
6/(x-1)-5x/4
=(4*6-5x(x-1))/[4(x-1)]
=[24-5x^2+5x]/(4x-4)
Answer:
(-5x^2+5x+24)/(4x-4)

9]
3/(x+7)+4/(x-8)
the common denominator is:
(x+7)*(x-8)=(x+7)(x-8)
thus adding the fractions we put them under the same denominator as follows:
[3(x-8)+4(x+7)]/[(x+7)(x-8)]
=[3x-24+4x+28]/[(x+7)(x-8)]
=(7x+4)/[(x+7)(x-8)]

5 0

2 years ago

Y=3x−7 what is the missing value

GaryK [48]

Answer:

-21

Step-by-step explanation:

It would have to be -21 because there's -7, but the threes not negative so it would have to be -21

5 0

2 years ago