Eight workers took 2 1/4 days to dig half of a tunnel. If only two workers are going to finish the tunnel, how long will it take them?​

Answer:

A EDGE 2021!

Step-by-step explanation:

Answer:

[tex]\displaystyle \frac{x^2+3x+2}{1-x}<0[/tex]

Step-by-step explanation:

Rational Inequality

We are given the solution of rational inequality:

(-2,-1) U (1,∞)

The first set suggests a limited zone than can be obtained by a quadratic equation of the form:

[tex](x-a)(x-b)<0[/tex]

Where a and b are the roots of the equation, which coincide with the endpoints of the interval. Thus, to get the interval, we can use:

[tex](x+2)(x+1)<0[/tex]

Operating:

[tex]x^2+3x+2<0[/tex]

The second set is an open infinite interval, that can be modeled as a third binomial that changes signs in x=1 and is in the denominator, so x=1 is not included.

Thus, one possible inequality is:

[tex]\mathbf{\displaystyle \frac{x^2+3x+2}{1-x}<0}[/tex]

The solution to the inequality (-2,-1)U(1, ∞) is (-2, ∞)

An inequality is an expression used to show the relationship between two or more numbers and variables.

A rational inequality is an inequality that contains a rational expression.

Given the inequality (-2,-1)U(1, ∞).

The solution to the inequality is (-2, ∞)

Find out more about Inequality at: https://brainly.com/question/24372553

Answer:

black clover on hulu and I guess sword art online on Netflix

depends which animes have you seen? you could watch psycho pass, baki, parasyte, kakeguri, black clover, and One Piece

Answer:

m = -3

Step-by-step explanation:

-2m=6

Divide both sides by (-2).

m = 6 ÷ (-2)

m = -3

Answer:

y = x + 4

Step-by-step explanation:

For a line to be Parallel it has to have the same slope but different y intercept

Answer:

1

Step-by-step explanation:

This equation is written in the

y = mx + b,

where "m" is the slope, and "b" is the y-intercept.

In this case, m=1, hence the "x" has no coefficient; therefore, the slope of the given line is 1.

When 2 lines are parallel, they run next to each other, for infinitely long, yet they never touch. This means that 2 parallel lines have the same slope. Hence a line running parallel to the given one will also have a slope of 1.

Answer:

x = 24

Step-by-step explanation:

Here, The Right angled triangle is given

So, The sum of angles of right angled triangle is 180

Now,

2x + 42 + 90 = 180

2x + 132 = 180

2x = 180 - 132

2x = 48

x = 48/2

x = 24

2x + 42 + 90 = 180

2(24) + 42 + 90 = 180

48 + 42 + 90 = 180

180 = 180

Hence, L.H.S = R.H.S

-TheUnknownScientist

Answer:

Wouldn't it be just 2 since it's already solved

There were 30 boys in Orchestra.

We have,

Total students in Orchestra= 75

Ratio of Girls to Boys = 3 :2

So, Number of Girls in Orchestra

= 3/5 x 75

= 3 x 15

= 45

and, Number of Boys in Orchestra

= 2/5 x 75

= 2 x 15

= 30

Thus, 30 Boys were in Orchestra.

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#SPJ3

The result of 392,196 divided by 87 is 4,508.

Long division is a mathematical process to divide numbers by using multiple steps. This process is applied to big numbers because it facilitates the process of dividing without using a calculator.

Here are the steps you need to follow:

1. Identify the divident and the divisor.

Divident: 392,196

Divisor: 87 (number that divides)

2. Start dividing using one number at a time.

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Answer: i hope i helped if not im truly sorry

Solving for 9x^2 - 25 = 0

Standard form:

9x2 − 25 = 0

Solutions based on quadratic formula:

x1  

= −0 − √ 02 − 4×9×(−25)  

2×9

= 0 − 30 × √ 1  

18

≈ −1.667

x2  

= −0 + √ 02 − 4×9×(−25)  

2×9

= 0 + 30 × √ 1  

18

≈ 1.667

Extrema:

Min = (0, −25)

Step-by-step explanation: im not dumb and im not smart

Answer:

9x^2-3x - 12

Step-by-step explanation:

(9x^2 + 6x - 7) + (-9x -5)

Simplify the expression:

9x^2 - 3x - 12

Factor:

Add and subtract the second term to the expression and factor by grouping.

3( x + 1 ) ( 3x - 4 )

Standard form:

9x^2 - 3x - 12

I hope this helps :)

Answer:

For a, the machine depreciates 20% of its current value each year.  So, It will lose 20% of its value in the first year.  Then in the second year, it will lose 20% of THAT value (not of the original value) and so on.

b) Since the machine loses 20% of its value each year, it retains 80% of its value each

Answer:

3

Step-by-step explanation:

Given that:

Weight of shipment = 40 1/2 kg

Weight per bag = 13 1/2 kg

The value of 40 1/2 divided by 13 1/2 will be ;

40 1/2 ÷ 13 1/2

81 /2 ÷ 27 /2

81/2 * 2/27

= 162 /54

= 3

Answer:

Step-by-step explanation:

Step one:

given data

charged = $40 call fee

additional charges= $15 per mile

let the number of miles be m

and let the total charges be c

Required, the linear function which represents the total charges

Step two:

the equation for the charges in slope-intercept form is

c=15m+40

Answer:

x > 9/5

Step-by-step explanation:

Answer:

x=-64/11

Step-by-step explanation:

3x-14x-42=22

-11x-42=22

-11x-42+42=22+42

-11x=64

Answer:

[tex] - 5 \frac{9}{11} [/tex]

Step-by-step explanation:

[tex]3x - 7(2x + 6) = 22 \\ \\ 3x - 14x - 42 = 22 \\ \\ - 11x = 22 + 42 \\ \\ - 11x = 64 \\ \\ x = \frac{64}{ - 11} \\ \\ x = - 5 \frac{9}{11} [/tex]

Answer:

2

Step-by-step explanation:

because their is 2 x's

Answer:  0.0386

Step-by-step explanation:

Given: The population of 400 tall women has a mean height[tex](\mu)[/tex] of 179.832 cm and a standard deviation[tex](\sigma)[/tex] of 12.192 cm.

Let X be a random variable that represents the height of woman.

Sample size : n= 50

The probability that the mean for this sample group is above 182.88 will be :

[tex]P(\overline{X}>182.88)\\\\=P(\dfrac{\overline{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}>\dfrac{182.88-179.832}{\dfrac{12.192}{\sqrt{50}}})\\\\ =P(Z>1.7678)\ \ \ [Z=\dfrac{\overline{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=1-P(Z<1.7678)\\\\=1-0.9614\ \ \ [\text{By p-value table}]\\\\= 0.0386[/tex]

Hence, Required probability =  0.0386

Answer:

Step-by-step explanation:

One zettabyte is equal to 1, 000 exabytes or 1021 or 1, 000, 000, 000, 000, 000, 000, 000 bytes. A zettabyte is a little bit smaller than zebibyte that contains 1, 180, 591, 620, 717, 411, 303, 424 (2^70) bytes, and is abbreviated as “ZB”.

Answer:

X<5

Step-by-step explanation:

Divide by 2

Answer=5

Step-by-step explanation:

You can solve this question step by step as follows;

here

2x<10

place 2 to another side and you know it divides 10

or, x<10/2

or,x<5

therefore the answer is 5

Answer:y-10=5/2(x-4) (the third choice)

Step-by-step explanation:

Point slope form is

y-y1=m(x-x1)

So y-10=5/2(x-4)

44

Step-by-step explanation:

a+4=48

a+4=48

a=48-4

a=44

Answer:

No, he won't

Step-by-step explanation:

Given

Target = 480 pages in 28 days

Rate = 60 pages in 4 days

Required:

Determine if he'll reach his target

The rate can be expressed using:

[tex]Rate = \frac{Pages}{Days}[/tex]

So, we have:

[tex]Rate = \frac{60\ pages}{4\ days}[/tex]

Multiply the fraction by [tex]\frac{7}{7}[/tex]

[tex]Rate = \frac{60\ pages}{4\ days} * \frac{7}{7}[/tex]

[tex]Rate = \frac{60\ pages * 7}{4\ days * 7}[/tex]

[tex]Rate = \frac{420\ pages}{28\ days}[/tex]

This can be interpreted as: 420 pages in 28 days

And his target is 480 pages in 28 days

Hence, he wont finish the book at that rate

Answer:

false

Step-by-step explanation:

Answer: you add 1/6 each time and add the hour until you get 2/3

Step-by-step explanation: 1/6=1 1/3=2 and you keep going

Answer:

You can use the number line to find how many hours it will take the company to build the fence by multiplying whatever number you land on by 6

Step-by-step explanation:

If they build one mile of fence, it took 6 hours to build that much

If they build three miles of fence, it took them 18 hours to build that much

And so on and so forth

Answer:

y=-3x+3

Step-by-step explanation:

your y in your points in the b in y=mx+b because it's the y intercept and then the slope is -3

Answer:

4602

Step-by-step explanation:

Answer:75 × 62 - 58 + 68 - 58 = 4602

Step-by-step explanation:

Answer: 6

Step-by-step explanation: The y-intercept is 6 and the slope is -2.

First, we subtract 10x.

5y = -10x+30

Then we divide by 5.

y = -2x + 6

Now we have everything we need!

So the y-intercept is 6.

Hope this helps! :)

The y-intercept is "6".

Given:

[tex]10x+5y=30[/tex]

y-intercept

[tex]10x+5y=30[/tex] y-intercepts

When y-intercepts the value it indicates that x=0 then

[tex]\to 10x+5y=30\\\\\to 10(0)+5y=30\\\\\to 5y=30\\\\\to y=\frac{30}{5}\\\\\to y=6[/tex]

When the y-intercept is value will be "6".

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