(2m⁴n⁴)¹° =...

July 2022 1 20 Report

помогите
1) (t² + 8t - 9) - (t² - 11t + 10) = 18t - 20 (уравнение)
2) -0.8c(c + 5) - 0.7(10c+5) + 0.8c² + 10c - 4 =
3) 3x(x - 2) - (3x - 1)(x + 4) ≥ 8(2 -x) (уравнение)
4) (2m⁵n⁴)⁷ * (4m³n⁵)² / (2m⁴n⁴)¹° =

Answers & Comments

cleopatraMCO 1) ( $( t^{2} + 8*t - 9) - ( t^{2} -11 * t +10) = 18 * t - 20$
19 * t - 19 = 18 * t - 20
t = -1

2) $-0,8c^{2} (c+5) - 0,7(10c+5) + 0,8 c^{2} + 10c - 4 =$
$= -0,8 c^{2} -4c - 7c - 3,5 + 0,8 c^{2} +10c -4 =$
$= -c - 7,5$

3)3x(x-2)-(3x-1)(x+4) ≥ 8(2-x)
$3 x^{2} -6x-3 x^{2} +x-12x+4 \geq 16-8x$
-9x ≥ 12
x ≥ 12/(-9)

4) $( 2m^{5} n^{4} ) ^{7} * (4 m^{3} n^{5} ) ^{2} / (2 m^{4} n^4) ^{10} }$ =
= $(2 m^{5} n^{4}) ^{7} * (4m^{3} n^{5} ) ^{2} / ((2 m^{4} n^{4}) ^{7} * (2 m^{4} n^{4}) ^{3})$ =
= $( m^{7} * (4 m^{3} n^{5} ) ^{2} )/(2 m^{4} n^{4} ) ^{3}$ =
= $m^{7} * 2^{4} * ( m^{3} n^{5} ) ^{2} / 2^{3} * ( m^{4} n^{4} ) ^{2} * m^{4} n^{4}$ =
= $2 m^{7} m^{-2} n^{-2} / m^{4} n^{4}$ = $2*m/ n^{2}$

2 votes Thanks 6

Answers & Comments

srochno pomogite pozhalujsta reshite uravnenie 3x 12 79x2x2

pomogitee pliiz upr 10

najdite ploshad32800c37fbc8ce00a24e8c6e28ca773f 42480

najdite ploshad pryamougolnika abcd432a155633a5334bb1a4dfeaa292353b 17082

pomogite s 173 zhattygu

srochno 18h5u8 24h3u5 2h2u2 26m6n7 54m4n8 3m3n3 312m

reshite pliz 1 6x 6xy 8x 8y 2 a ab 5a 5b 3 b bc ab

pomogite n2 n 1n2 n1

pomogite s 11 zaranee spasibo

chto takoe past simple ili present simple na anglijskom

рекомендуемые вопросы

Helpful Links

Helpful Social