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2 years ago

Find an expression equivalent to 4x – 4 – 2x + 3. 2x – 1 6x – 1 2x – 7 –2x + 3

Mathematics

2 answers:

BigorU [14]2 years ago

6 0

6x-1 because you combine like terms 4x+2x=6x and then -4+3=-1

kherson [118]2 years ago

5 0

That will be 2x-1 because
(4x-2x)+(-4+3)=
2x-1

The addition sign would turn to subtract because of the reciprocal sign. Reciprocal is a sign that switch base on your sign of negative and positive.

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Consider the initial value problem:

Inessa [10]

Answer:

$\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2$

Step-by-step explanation:

The given initial value problem is;

$y''-5y'+6y=-5\sin(2t)---(1)\\y(0)=-5,y'(0)=2$

Let

$u(t)=y(t)----(2)\\v(t)=y'(t)----(3)$

Differentiating both sides of equation (1) with respect to $t$ , we obtain:

$u'(t)=y'(t)---(4)\\ \\\implies u'(t)=v(t)---(5)$

Differentiating both sides of equation (2) with respect to $t$ gives:

$v'(t)=y''(t)----(6)$

From equation (1),

$y''=5y'-6y-5\sin(2t)\\y''=5v(t)-6u(t)-5\sin(2t)\\\implies v'(t)=5v(t)-6u(t)-5\sin(2t)----(7)$

Putting t=0 into equation (2) yields

$u(0)=y(0)\\\implies u(0)=-5$

Also putting t=0 into equation (3)

$u'(0)=y'(0)\\u'(0)=2$

The system of first order equations is:

$\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2$

3 0

3 years ago

A bee flies 25 m north of the hive then 10 m east 5 m west and 10 m south. How far north and east of the hive is it now? Explain

mafiozo [28]

Answer:

20 meters north.

Step-by-step explanation:

(I did it on a paper not to lose track.) First we go 25 north. Then ten east. Five south. And 10 west again. So in East/West we didn't move but we moved 5 down/south so we are still at twenty. If you don't understand still draw it on a paper.

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2 years ago

What are the coordinates for b c d and e ??

Ugo [173]

Answer:

b= (-6,-7)

c= (-6,-2)

d= (0,-2)

e= (4,-7)

Step-by-step explanation:

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1 year ago

A solid metal rectangular pyramid has a base that measures 16 cm by 25 cm The Solid is melted and recast into a solid cavare pyr

Ymorist [56]

12 yesyrsyrsjsnskwnbewnisenenekek

5 0

2 years ago

Which Expression is Equivalent to the given expression? (4m^2n)^2/2m^5n

Daniel [21]

Answer:

D. $8 {m}^{ - 1} n$

Step-by-step explanation:

$\huge \frac{(4 {m}^{2} n)^{2} }{2 {m}^{5}n } \\ \\ \huge= \frac{16 {m}^{4} {n}^{2} }{2 {m}^{5}n } \\ \\ \huge = 8 {m}^{4 - 5} {n}^{2 - 1} \\ \\ \huge \purple{ \boxed{= 8 {m}^{ - 1} n}}$

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2 years ago