All categories

3 years ago

What does n equal in 6(2n – 3) – 2(6n + 1) = 10n?.

Mathematics

2 answers:

Irina18 [472]3 years ago

7 0

Answer:

n = -2

Step-by-step explanation:

6(2n - 3) - 2(6n + 1) = 10n

multiply the brackets

6*2n - 6*3 - 2*6n - 2*1 = 10n

12n - 18 - 12n - 2 = 10n

add or subtract the like terms

0 - 20 = 10n

shift 10 to the right hand side .REmember when u shift multiplication changes to division.

-20 / 10 = n

-2 = n

Cloud [144]3 years ago

6 0

Answer:n=-2

Step-by-step explanation:

12n-18-12n-2=10n

-20=10n

n=-2

You might be interested in

Justin did push-ups for the past 555 days.The following data points are the number of push-ups he did each day.

Vitek1552 [10]

Answer: σ: 2.76

Step-by-step explanation:

Count, N: 5

Sum, Σx: 125

Mean, μ: 25

Variance, σ2: 7.6

Steps

look at attached pic for formula

σ^2 = $\frac{Σ(xi - μ)^{2} }{N}$

$\frac{(21 - 25)2 + ... + (29 - 25)2}{5}$

⇒ $\frac{38}{5}$

⇒ 7.6

σ = $\sqrt{7.6}$

⇒ 2.756809750418

⇒ or 2.76

3 0

2 years ago

Y(y + 4) - y 2 = 6 is a quadratic equation. True or False

Ugo [173]

Y(y + 4) - y2 = 6
y2 + 4y - y2 = 6
4y = 6 ⇒ False

3 0

3 years ago

Read 2 more answers

Simplify:-6+{14+2[60-9(1+3)]}

yuradex [85]

1 + 3 = 4;
9 x 4 = 36;
60 - 36 = 24;
2 x 24 = 48;
14 + 48 = 62;
-6 + 62 = 56.

5 0

3 years ago

Read 2 more answers

Emily, Jean, and Amanda live in apartments on the 5th, 6th and 7th floors. One girl likes basketball, one likes football, and th

ss7ja [257]

Answer:

Assuming you mean baseball in stead of basketball, if must be the 5th floor.

Step-by-step explanation:

"The girl on the fifth floor thinks soccer is boring" implies that on the 5th floor lives the football or baseball fan. However, it cannot be the football fan since it is already known that she lives on 6th.

So the baseball fan, which is Jean, lives on 5th.

3 0

3 years ago

Simplify and reduce to the lowest terms.<br> <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-7%7D%7B12%7D%20" id="TexFormula1" t

Paladinen [302]

When you divide two fractions, you're actually multiplying one of them by the reciprocal of the other. First, find the reciprocal of the second fraction by flipping it upside down. Then, multiply it by the first fraction. (Numerator x numerator and denominator x denominator)

$\frac{-7}{12}$ ÷ $\frac{2}{3}$ Replace the second fraction with it's reciprocal
$\frac{-7}{12}$ x $\frac{3}{2}$ Multiply (-7 x 3 and 12 x 2)
$\frac{-21}{24}$ Both 21 and 24 are divisible by three, so divide them by 3
$\frac{-7}{8}$

6 0

3 years ago