Giúp mik vs ạ
Mik cần gấp ạ
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giúp mik với ạ mik cần gấp. GIẢI CỤ THỂ GIÚP MIK vs ạ
`@` `\text {Ans}`
`\downarrow`
`4,`
Vì `\text {MN // BC}`
`=>` $\widehat {B} = \widehat {BMN} = 114^0 (\text {2 góc đối đỉnh})$
Ta có: \(\left\{{}\begin{matrix}\widehat{\text{BMN}}+\widehat{\text{AMN}}=180^0\left(\text{2 góc kề bù}\right)\\\widehat{\text{CNM}}+\widehat{\text{ANM}}=180^0\left(\text{2 góc kề bù}\right)\end{matrix}\right.\)
`=>`\(\left\{{}\begin{matrix}\widehat{\text{AMN}}=180^0-114^0=66^0\\\widehat{\text{ANM}}=180^0-130^0=50^0\end{matrix}\right.\)
Xét `\Delta AMN`:
\(\widehat{\text{A}}+\widehat{\text{M}}+\widehat{\text{N}}=180^0\left(\text{định lý tổng 3 góc trong 1 tgiac}\right)\)
`=>`\(\widehat{\text{A}}+66^0+50^0=180^0\)
`=>`\(\widehat{\text{A}}=180^0-66^0-50^0=64^0\)
Mà \(\widehat{\text{A}}=\widehat{\text{x}}\)
`=>`\(\widehat{\text{x}}=64^0\)
Vậy, số đo của góc `x = 64^0.`
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Giúp mik vs ạ. Mik cần gấp ạ!!!
MN GIÚP MIK VS Ạ MIK CẦN GẤP Ạ
Giúp mik vs ạ, mik đang cần gấp. Mong mng giúp ạ
e: \(E=\dfrac{x^2-9-x^2+4-x^2+9}{\left(x+3\right)\left(x-2\right)}\)
\(=\dfrac{x+2}{x+3}\)
a: \(A=\dfrac{4x^2+x^2-2x+1+x^2+2x+1}{\left(x-1\right)\left(x+1\right)}\)
\(=\dfrac{6x^2+2}{\left(x-1\right)\left(x+1\right)}\)
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\(A=\dfrac{-4x^2+x^2-2x+1-x^2-2x-1}{\left(1-x\right)\left(1+x\right)}=\dfrac{-4x\left(x+1\right)}{\left(1-x\right)\left(1+x\right)}=\dfrac{4x}{x-1}\\ C=\dfrac{-x^2-4x-4+x^2-4x+4-4x^2}{\left(x-2\right)\left(x+2\right)}=\dfrac{-4x\left(x+2\right)}{\left(x-2\right)\left(x+2\right)}=\dfrac{4x}{2-x}\\ E=\dfrac{x^2-9-x^2+4x-4-x^2+9}{\left(x-2\right)\left(x+3\right)}=\dfrac{-\left(x-2\right)^2}{\left(x-2\right)\left(x+3\right)}=\dfrac{2-x}{x+3}\)
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giúp mik vs ạ mik đng cần gấp ạ lm ơn đó nhanh giúp mik pls
a) (-26) + (-32) b) 57 + 264 c) (-267) + (-473) d) (-5) +8
=-(26 + 32) =321 =-(267 + 473) =8-5
=-58 =-740 =3
e) 1000 + (-327) f) (-5679) + 5679 g) (-2364) + (-175)
=1000-327 =0 =- (2364 + 175)
=673 =-2539
h) 136 + (-36)
=136 - 36
=100
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Mik đang cần gấp giúp mik giải vs ạ! Mik cảm ơn ạ!
1 are
2 am
3 is
4 are
5 are
6 are
7 is
8 is
9 is
10 are
IV
1 is writing
2 are losing
3 is having
4 is staying
5 am not lying
6 is always using
7 are having
8 Are you playing
9 are not touching
10 Is - listening
11 Is- winning
12 am not staying
13 is not working
14 is not reading
15 isn't raining
16 am not listening
17 Are they making
18 Are you doing
19 Is - sitting
20 is - doing
21 are-putting
22 are-wearing
23 is-studying
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2, am
3, is
4,are
5,are
6,are
7,is
8,is
9,is
10,are
IV
1,2,7 OK
3,is having
4,has stayed
5,am not lying
6,always uses
8,Are-playing
9,not to touch
10,Is-listening
11,Are-winning
12,am not staying
13,isn't working
14,isn't reading
15,isn't raining
16,am not listening
17,Are-making
18,Are-doing
19,Is-sitting
20,is-doing
21,do-putting
22,do-wear
23,is-studying
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giúp mik vs ạ, mik đang cần gấp ạ, c.ơn mn ạ3
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giúp mik vs ạ, mik đang cần gấp ạ, c.ơn mn ạ<3
a. f(\(\dfrac{-1}{2}\)) = \(4.\left(\dfrac{-1}{2}\right)^2+3.\left(\dfrac{-1}{2}\right)-2\)
= \(4.\dfrac{1}{4}-\left(\dfrac{-3}{2}\right)-\dfrac{4}{2}\)
= \(\dfrac{2}{2}+\dfrac{3}{2}-\dfrac{4}{2}\)
= \(\dfrac{1}{2}\)
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MN GIÚP MIK VS Ạ! MIK ĐG CẦN GẤP Ạ!!!!!!!