Réitigh -7+4(-2) | Réiteoir Mata Microsoft

Scipeáil chuig an bpríomhábhar

- 7 + 4 (- 2)

= - 15

Luacháil

- 15

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Fachtóirigh

- 15

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Tráth na gCeist

- 7 + 4 (- 2)

Físeáin

Negative numbers introduction | Negative numbers and absolute value | Pre-Algebra | Khan Academy

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Fadhbanna den chineál céanna ó Chuardach Gréasáin

How do you solve

- 20 = - 4 z

https://socratic.org/questions/how-do-you-solve-20-4z

z = 5

Explanation: To find

z

, make it the subject of the formula by isolating it. Divide by

- 4

on both sides.. Negative / negative=positive. ...

How do you solve

6 m + n = 9

m - 8 n = 26

using substitution?

https://socratic.org/questions/how-do-you-solve-6m-n-9-and-m-8n-26-using-substitution

m = 2

n = - 3

Explanation: From the given equations

6 m + n = 9

m - 8 n = 26

second equation Start with ...

What is the angle between

< - 3, 5, 0 >

< 4, 0, - 2 >

https://socratic.org/questions/what-is-the-angle-between-3-5-0-and-4-0-2

α = \sim 21^{o}

A = < - 3, 5, 0 > B = < 4, 0, - 2 >

step-1: find the magnitudes: ∣ ∣ C ∣ ∣ = a^{2} + b^{2} + c^{2}

What is the slope of the line passing through the following points:

(- 2, 8), (- 1, 4)

https://socratic.org/questions/what-is-the-slope-of-the-line-passing-through-the-following-points-2-8-1-4

m = - 4

Explanation: Use the equation

m = \frac{y _{2} - y _{1}}{x _{2} - x _{1}}

m

is the slope, and one point is

(x_{1}, y_{1})

What is the slope of the line passing through the following points:

(- 7, - 4), (- 2, 4)

https://socratic.org/questions/what-is-the-slope-of-the-line-passing-through-the-following-points-7-4-2-4

= \frac{8}{5}

(- 7, - 4) = (x_{1}, y_{1})

(- 2, 4) = (x_{2}, y_{2})

C r_{3}^{+}

concentration in a saturation solution of

C r (O H)_{3}

4.0 \times 10^{- 6} M

. How do you ...

https://socratic.org/questions/if-the-cr-3-concentration-in-a-saturation-solution-of-cr-oh-3-is-4-0x10-6-m-how-

K_{s p} = 6.9 \cdot 10^{- 21}

Explanation: Chromium(III) hydroxide,

Cr (OH)_{3}

, is made up of chromium(III) cations,

Cr^{3 +}

Roinn

Cóipeáladh go dtí an ghearrthaisce

-7-8

Méadaigh 4 agus -2 chun -8 a fháil.

-15

Dealaigh 8 ó -7 chun -15 a fháil.

Samplaí

Cothromóid chearnach

x^{2} - 4 x - 5 = 0

4 sin θ cos θ = 2 sin θ

Cothromóid líneach

y = 3 x + 4

699 * 533

[2534] [2 - 1 0135]

Cothromóid chomhuaineach

{8 x + 2 y = 46 7 x + 3 y = 47

\frac{d}{d x} \frac{( 3 x ^{2} - 2 )}{( x - 5 )}

\int_{0}^{1} x e^{- x^{2}} d x

x \to - 3 lim \frac{x ^{2} - 9}{x ^{2} + 2 x - 3}