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3 years ago

-1.2n+23.8>9.4 solve for N

Mathematics

1 answer:

____ [38]3 years ago

7 0

Answer:

n < 12

Step-by-step explanation:

Subtract 23.8 on both sides:

-1.2n + 23.8 > 9.4

-23.8 -23.8

-1.2n > -14.4

Divide by -1.2 on both sides:

*Remember to flip the sign because you are dividing by a negative*

-1.2n > -14.4

/-1.2 /-1.2

n < 12

Therefore, n is less than 12.

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What are the central angles of the sectors representing nuclear energy in both the years?( you may round the numbers before find

xeze [42]

Answer:

1995 => 22°

2005 => 36°

Step-by-step explanation:

Central angle of the sector representing nuclear energy in 1995 = percentage of nuclear energy in 1995 ÷ 100 × 360°

Nuclear energy is approximately 6% (rounded to whole number) in 1995.

Central angle = $\frac{6}{100}*360 = \frac{6}{10}*36$

$= \frac{216}{10} = 21.6$

Central angle representing nuclear energy in 1995 ≈ 22° (nearest whole number).

Central angle of the sector representing nuclear energy in 2005 = percentage of nuclear energy in 2005 ÷ 100 × 360°

Nuclear energy is approximately 10% (rounded to whole number) in 1995.

Central angle = $\frac{10}{100}*360 = \frac{1}{1}*36$

$= \frac{36} = 36$

Central angle representing nuclear energy in 2005 = 36°.

7 0

3 years ago

He roots of x2 − (<br> ) + 34 are 5 ± 3i.

GrogVix [38]

Use the quadratic formula, x= $\frac{-b+ \sqrt{ b^{2}-4ac} }{2a}$
(don't know how to type the "-"sign in the formula, so there is only the "+" in the formula)
in this case, a=1, c=34, b is unknown
from the roots, we can tell that -b+ $\sqrt{b^{2}-4ac }$ =2(5+3i)=10+6i

Note: the original equation already give b as -b, so -(-b)=10, b=10
using b^2-4ac=(6I)^2,
b^2-4*34=-36
b^2=100
you will also get b=10

5 0

3 years ago

$6x + $15 ≤ $70<br><br><br> I have no idea- xd

Delvig [45]

Answer:

x = 9

Step-by-step explanation:

6 × 9 = 54

54 + 15 = 69, which is less than 70.

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3 years ago

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Maksim231197 [3]

Slope is just tangent of the graph

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3 years ago

The stem-and-leaf plot shows the distances, in miles, that a group of owners of new cars drove one weekend.

evablogger [386]

Six people. because if you count theres 55, 56,58,58, 63,63 so thats six people.

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3 years ago