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2 years ago

Pleaaaaaaaaaase i neeeeeeeeeed help please noo links i need help

Mathematics

1 answer:

Salsk061 [2.6K]2 years ago

8 0

Answer:

BADC

Step-by-step explanation:

-4x + 7 $\geq$ 27 Subtract 7

-4x $\geq$ 20 Divide both sides by -4

x $\leq$ -5 B

3x - 10 < -25 Add 10

3x < -15 Divide by 3

x < -5 A

5(x - 2) > -15 Use distributive property

5x - 10 > -15 Add 10

5x > -5 Divide by 5

x > -1 D

x - 9 < -10 Add 9

x < -1 C

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Solve: 2cos(x)-square root 3=0 for 0 less than x less than 2 pi

Leona [35]

Answer:

The general solution of $cos x = cos(\frac{\pi }{6})$ is

x = 2nπ± $\frac{\pi }{6}$

The general solution values

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

Step-by-step explanation:

Explanation:-

Given equation is

$2cosx-\sqrt{3} =0 for 0$

$2cosx =\sqrt{3}$

Dividing '2' on both sides, we get

$cos x =\frac{\sqrt{3} }{2}$

$cos x = cos(\frac{\pi }{6})$

General solution of cos θ = cos ∝ is θ = 2nπ±∝

Now The general solution of $cos x = cos(\frac{\pi }{6})$ is

x = 2nπ± $\frac{\pi }{6}$

put n=0

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

Put n=1

$x = 2\pi +\frac{\pi }{6} = \frac{13\pi }{6}$

$x = 2\pi -\frac{\pi }{6} = \frac{11\pi }{6}$

put n=2

$x = 4\pi +\frac{\pi }{6} = \frac{25\pi }{6}$

$x = 4\pi -\frac{\pi }{6} = \frac{23\pi }{6}$

And so on

But given 0 < x< 2π

The general solution values

$x = - \frac{\pi }{6} and x = \frac{\pi }{6}$

6 0

3 years ago

25, 8, 10, 35, 5, 45, 40, 30, 20

Lera25 [3.4K]

B.) 37.5.. First you place all the numbers in order from least to greatest. Your mean is 25...and ur upper quartile because the 4 #'s fall even u add 35 and 40 and divide by 2... Which gives u upper quartile of 37.5 and lower quartile of 9. Hope this helps :)

4 0

3 years ago

WHAT IS 18 TONS 42 POUNDS DEVIDED BY 3

Alecsey [184]

A ton is 2,000 pounds so multiply 2,000 x 18

2,000 x 18 = 36,000 pounds, now add the 42 pounds to the 36,000

36,000 + 42 = 36,042 pounds. Now divide 36,042 by 3

36,042 ÷ 3 = 12,014

Your answer is 12,014 pounds

If you need your answer in tons it's 6.007 tons

Calculations for pounds to tons

12,014 ÷ 2,000 = 6.007