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3 years ago

What is the answer for 23-2|2-4(3-6)|

Mathematics

1 answer:

Alexxandr [17]3 years ago

5 0

use PEMDAS

The numbers in the absolute value symbols are what you need to solve first:

I2-4(3-6)I

I2-4(-3)I simplify the parentheses

I2+12I multiply -4 and -3

I14I add the terms 2 and 12

14 simplify 14 with the absolute value symbols

Now solve what's on the outside of the absolute value symbols:

23-2

21 subtract and simplify 23 and -2

Finally, multiply the two terms we have made, 14 and 21:

14 * 21 = 294

Your final answer should be 294.

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To multiply or divide a number by 10,000, how many places should you move the decimal point?

zhannawk [14.2K]

Answer:

Step-by-step explanation:

In place value, you would move the decimal point 4 places. You move it 4 places because 10,000 has 4 zeroes.

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3 years ago

Read 2 more answers

What would be the new value of a after running the program

atroni [7]

Answer:

The answer is 15

Step-by-step explanation:

$3 \times 5 = 15$

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3 years ago

PRECAL Find the compliment of 0.25 Find the supplement of 7π/8

balandron [24]

The unit of measurement is not specified, so for the sake of this problem, we'll assume it's radians (If you need it in degrees, I'll be happy to edit).

Find the compliment of 0.25:

Complementary angles add up to 90 degrees. In radians, this would be π/2. If you're unsure how I got this, check degrees to radian conversions.

The compliment of 0.25 would be $\dfrac{\pi}{2} - \dfrac{1}{4}$ (1/4=0.25)

$\dfrac{\pi}{2} - \dfrac{1}{4}$

$= \dfrac{\pi}{2} - \dfrac{1}{4} = \dfrac{2\pi-1}{4}$

(This is the simplified form in case you're homework needs it in this form)

That's the compliment. In decimal (rounded to the nearest hundredth), this would be 1.32 radians.

Find the supplement of 7π/8:

Supplementary angles add up to 180 degrees. In radians, this would be π.

The supplement would be the following:

$\pi- \dfrac{7\pi}{8}$

$=\dfrac{8\pi}{8}-\dfrac{7\pi}{8}=\dfrac{\pi}{8}$

Thus, the supplement is π/8 radians. If any of this struck you as confusing, comment and I'd be happy to clarify.

8 0

4 years ago

The manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour. (a-1) At α = .05 i

ioda

Answer:

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

Step-by-step explanation:

Explanation:-

Given sample size 'n' =16

Given the manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour.

mean of the Population 'μ' = 560

Mean of the sample Χ⁻ = 538

sample standard deviation' S' = 50

Null hypothesis:H₀:μ > 560

Alternative Hypothesis:H₁ : :μ < 560 (left tailed test)

Test statistic

$t = \frac{x^{-}-mean }{\frac{S}{\sqrt{n} } }$

$t = \frac{538-560 }{\frac{50}{\sqrt{16} } } = -1.76$

|t| = |-1.76| = 1.76

Degrees of freedom

γ = n-1 =16-1 =15

$t_{\frac{\alpha }{2} } = t_{\frac{0.05}{2} } =t_{0.025} =2.131$

Conclusion:-

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

6 0

4 years ago

If two lines have slopes of 2/9 and 9/2, are they perpendicular?A. yesB. no

Elan Coil [88]

The lines are perpendicular if their slopes are negative reciprocal of the other.

Since 9/2 is just a reciprocal and not the NEGATIVE reciprocal of 2/9, the lines are NOT perpendicular.

4 0

1 year ago