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Dahasolnce [82]
3 years ago
11

How do i solve this -6n-20=2n+4(1-3n)

Mathematics
1 answer:
Leno4ka [110]3 years ago
3 0
Hi Ivan

-6n - 20 = 2n + 4(1 - 3n)
-6n - 20 = 2n + 4 - 12n
Combine like terms
-6n - 20 = 2n - 12n + 4
-6n - 20 = -10n + 4
-6n + 10n = 4 + 20
4n = 24
n = 24/4
n= 6

I hope that's help! If you have any further questions please let me know !
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Un robot en Marte tiene los siguientes desplazamientos antes de lograr encontrar el lugar con las coordenadas indicadas para emp
sineoko [7]

Answer:

El desplazamiento total del robot es de aproximadamente 17.4 m 12.35° al sur del este

Step-by-step explanation:

El movimiento del robot en Marte se da como sigue;

1) El desplazamiento sur = 25 m

2) El desplazamiento 15 ° al norte del este = 35 m

3) El desplazamiento 37 ° al norte del oeste = 20 m

Por lo tanto, tenemos la moción en forma vectorial;

1) -25\hat j

2) 35·cos(15°)\hat i + 35·sin(15°)\hat j

3) -20·cos(37)\hat i + 20·sin(37°)\hat j

Por lo tanto, tenemos el desplazamiento resultante total, R, del robot está dado por la suma de los vectores como sigue;

R =  (35·cos(15°) - 20·cos(37)) \hat i + (35·sin(15°) + 20·sin(37°) - 25)\hat j

R = 17.8346937192 \hat i - 3.9050329583 \hat j  

La magnitud de R = √ ((17.8346937192) ² + (-3.9050329583) ²) ≈ 17.4 m

La magnitud de R ≈ 17,4 m

La dirección de R = Arctan ((- 3.9050329583) / (17.8346937192)) ≈ -12.35 °

La dirección de R ≈ -12,35 °

La dirección es aproximadamente 12,35 ° al sur del este

El desplazamiento total del robot es de aproximadamente 17.4 m 12.35 ° al sur del este

5 0
4 years ago
Find the x- and y-intercept of the line.<br><br> -4x +2y = 24
Daniel [21]
When y = 0,  x will equal the x-intercept. So, plug in 0 for the y-value to find the x-intercept.

  -4x + 2y = 24   Plug in 0 for y
-4x +2(0) = 24   Multiply
          -4x = 24   Divide both sides by -4
             x = -6

The x-intercept is (-6, 0).

When x = 0, y will be the y-intercept. So, plug in 0 for x and solve for y.

   -4x + 2y = 24   Plug in 0 for x
-4(0) + 2y = 24   Multiply
           2y = 24   Divide both sides by 2
             y = 12

The y-intercept is (0, 12).
4 0
3 years ago
The wall street journal corporate perceptions study 2011 surveyed readers and asked how each rated the quality of management and
malfutka [58]

Answer:

Hello some parts of your question is missing below is the missing part

answer : A) p-value =  0.0019 ,

The level of significance ( 0.05 ) > p-value ( 0.0019 )

B) There is no dependence between the two ratings

Step-by-step explanation:

A) using a 0.05 level of significance and test for independence of the quality of management

Test statistic : X^{2}  ∑ ( Oi - Ei )^2 / Ei

= [(40-35)^2 / 35 ] +  [(25-24.5)^2 / 24.5 ] +  [(5-10.5)^2 / 10.5]  +  [(35-40)^2 / 40]  +  [(35-28)^2 / 28]  +  [(10-12)^2 / 12]  +   [ (25-25)^2 / 25 ]  +  [(10-17.5)^2 / 17.5 ]  + [(15-7.5)^2 / 7.5]  =  17.03  

p-value = 0.0019

Df = 4  ,

The level of significance ( 0.05 ) > p-value ( 0.0019 )

B) There is no dependence between the two ratings

4 0
3 years ago
You must use the substitution method. 3x+2y=11 <br> y=5x-1
valina [46]
Plug in y=5x-1 for y in 3x+2y=11

3x+2(5x-1)=11
3x+10x-2=11
13x=13
x=1

plug x=1 to y=5x-1 to find y

y=5(1)-1
y=5-1
y=4

ANSWER: x=1 and y=4 which is (1,4) as an ordered pair
5 0
4 years ago
Anita incorrectly wrote the equation z = w – 18 to describe the pattern in the table.
Alina [70]

Answer:

B C and D

Step-by-step explanation:

Mark brainliest

P.S this was epert verified

8 0
3 years ago
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