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3 years ago

How can you rewrite (20+11) +5

Mathematics

1 answer:

balu736 [363]3 years ago

8 0

Answer:

20 + 11 + 5

or 36

Step-by-step explanation:

(20+11) +5

When we add or subtract you can just get rid of the parenthesis (Unless the negative is before the parenthesis)

20+11+5

When we add them together we get :

31 + 5 = 36

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1/x<4x<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7Bx%7D%20%20%3C%204x" id="TexFormula1" title=" \frac{1}{x} &lt

liraira [26]

Answer:

$x>\frac{1}{2} \\x$

Step-by-step explanation:

If we solve for 'x' variable, its recommended to multiply 'x' variable in both sides of inequality:

we have $\frac{1}{4}< x^{2} \\$

This is a quadratic equation, two answer are going to be obtained from here.

since $\sqrt{x^{2} } = |x|$

Applying square roots to both sides of inequality sign we wil have the following

$\sqrt{\frac{1}{4} } < \sqrt{x^{2} }$

This leaves to the following

$\frac{1}{4}$

remember that $|x|= +/ - x$

$x>\frac{1}{2} \\x$

6 0

3 years ago

(1 point) A recent report for a regional airline reported that the mean number of hours of flying time for its pilots is 56 hour

Ray Of Light [21]

Answer:

(53.812 ; 58.188) ; 156

Step-by-step explanation:

Given that :

Sample size (n) = 51

Mean (m) = 56

Standard deviation (σ) = 9.5

α = 90%

Using the relation :

Confidence interval = mean ± Error

Error = Zcritical * (standard deviation / sqrt (n))

Zcritical at 90% = 1.645

Error = 1.645 * (9.5 / sqrt(51))

Error = 1.645 * 1.3302660

Error = 2.1882877

Hence,

Confidence interval :

Lower boundary = 56 - 2.1882877 = 53.8117123

Upper boundary = 56 + 2.1882877 = 58.1882877

Confidence interval = (53.812 ; 58.188)

2.)

Margin of Error (ME) = 1.25

α = 90%

Sample size = ((Zcritical * σ) / ME)^2

Zcritical at 90% = 1.645

Sample size = ((1.645 * 9.5) / 1.25)^2

Sample size = (15.6275 / 1.25)^2

Sample size = 12.502^2 = 156.3000

Sample size = 156

3 0

2 years ago

Six rectangles each with a common base width of 2

Yuki888 [10]

91 IS THE AREAS OF THE SIX RECTANGLES

4 0

3 years ago

HOS

lianna [129]

Answer:

Step-by-step explanation:

5 0

3 years ago

CAN ANYBODY PLS HELP

Firdavs [7]

The correct options are

$5x = - 58 \:$ $5x + 4 = - 54$

<h3>How to find same value of x?</h3>

given that

$\frac{5}{6} x + \frac{2}{3} = - 9$

first find value of x to obtain the equations have the same value of x.

Find the L.C.M between the 6,3

$\frac{5x + 4}{6} = - 9$

Then Cross multiplication should be done

$5x + 4 = - 9 \times 6 \\ 5x + 4 = - 54 \\ 5x = - 54 - 4$

$5x = - 58$

Hence the correct options are

$5x = - 58$

$5x + 4 = - 54$

Learn more about problems on equations, refer:

https://brainly.in/question/742266

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7 0

1 year ago