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2 years ago

PLEASE PLEASE PLEASE HELP ME IM DESPERATE

Mathematics

1 answer:

artcher [175]2 years ago

3 0

I think it might be the first answer dom f = {-4, 3, 5}
Hope it helps ;))

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Find the area of the triangle below.

fenix001 [56]

Answer:

area of a triangle is 1/2×h×b

Step-by-step explanation:

1÷2×12×13

=78

5 0

3 years ago

ANSWER FREE BRINLIEST!! ANSWER THE TWOO CIRCLED ONES!!

BlackZzzverrR [31]

Answer:

alright for the first one you set them equal o each other while for the second you do the same thing

first one:8

second one:5

Step-by-step explanation:

24/3 is x and x=8

for the second one

18+12 is 30 and 30/6 is 5so the second one is 5'

if you want me to clarify more please comment

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3 years ago

Read 2 more answers

Find a solution x = x(t) of the equation x′ + 2x = t2 + 4t + 7 in the form of a quadratic function of t, that is, of the form x(

Temka [501]

The particular quadratic solution to the ODE is found as follows:

$x=at^2+bt+c$
$x'=2at+b$

$(2at+b)+2(at^2+bt+c)=t^2+4t+7$
$2at^2+(2a+2b)t+(b+2c)=t^2+4t+7$

$\begin{cases}2a=1\\2(a+b)=4\\b+2c=7\end{cases}\implies a=\dfrac12,b=\dfrac32,c=\dfrac{11}4$

Note that there's also the fundamental solution to account for, which is obtained from the characteristic equation for the ODE:

$x'+2x=0\implies r+2=0\implies r=-2$

so that $x_c=Ce^{-2t}$ is a characteristic solution to the ODE, and the general solution would be

$x=Ce^{-2t}+\dfrac{t^2}2+\dfrac{3t}2+\dfrac{11}4$

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3 years ago

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2 years ago

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Can you plz help me solove this answer

shtirl [24]

Where is the question?

7 0

3 years ago