Please help I really need your help

Answer:

The only point (0,0) lies inside the shaded region and hence it gives a solution for the set of inequalities.

Step-by-step explanation:

See the graph attached to this question.

The solution of the set of inequalities is given by the shaded region on the graph.

Now, the point (0,5) is outside this shaded region, hence it can not be the solution.

The point (3,0) also is outside this shaded region, hence it can not be the solution.

The point (-3,0) also is outside this shaded region, hence it can not be the solution.

Now, the only point (0,0) lies inside the shaded region and hence it gives a solution for the set of inequalities. (Answer)

The solutions of the equation are -12 and 16

Step-by-step explanation:

Absolute value describes the distance of a number on the number line from 0 without considering which direction from zero the number lies. The absolute value of a number is never negative, if IxI = a, where a > 0, then

∵ 2Ix - 2I - 8 = 20

- At first add 8 to both sides

∴ 2Ix - 2I = 28

- Then divide both sides by 2

∴ Ix - 2I = 14

Now By using the notes above equate x - 2 by 14 and -14

∵ x - 2 = 14

- Add 2 to both sides

∴ x = 16

∵ x - 2 = -14

- Add 2 to both sides

∴ x = -12

The solutions of the equation are -12 and 16

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-18u+16u-7=9

-2u - 7 = 9       (combine like terms)

-2u = 16           (add 7 on both sides)

u = -8

Answer:

The correct answer to this problem is u = -8.

Step-by-step explanation:

To solve this problem, we first must combine like terms on the left side of the equation.  This means adding together the two terms that have a "u" multiplied by a number.  To combine them, we simply add the coefficients together, as we would with constant values.  This is modeled below:

-18u+16u-7=9

-2u - 7 = 9

Next, we want to add 7 to both sides of the equation.  This will cancel out the -7 on the left side of the equation, isolating the term with the variable u (what we are trying to solve for).

-2u - 7 + 7 = 9 + 7

-2u = 16

Finally, we want to divide both sides by -2 in order to isolate the variable u.  This will get rid of the coefficient of negative 2 and give us our answer.

u = 16/-2 = -8

Therefore, the answer to this question is u = -8.

Hope this helps!

Answer:

22. 150 minutes

23. ½ day

24. 0,045 minutes

25. 1,5 weeks

26. 1 year

Answer:

(1) 5 , PI + 2, 17/3

(2) 3/2, sqrt (5), 2.5

(3) Sqrt(5)/2, PI – 2, 5/4

Step-by-step explanation:

For each number, begin by comparing the whole numbers. The one with the least whole number is the smallest while the one with the largest is the biggest number.

If the numbers being compared have the same whole numbers, check the decimal places. Begin with tenths. The one with the lowest number is the smallest number. If they are the same compare the hundredths, if they are the same compare thousandths...until you find a decimal that is different and can differentiate the numbers.

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Step-by-step explanation:

First, distribute the -4 to the parenthesis:

24a-22=-4+24a

Add 22 to both sides:

24a-22+22=-4+22+24a

Simplify:

24a=18+24a

Subtract 24a from both sides:

24a-24a=18+24a-24a

Simplify:

0=18

hope this helps :)

(3x^5y)^2=

3^2=9

(x^5)^2=x^10

y^2=y^2

(3x^5y)^2=9x^10y^2

9x^10y^2(4x^3y^5)=

9*4=36

x^10*x^3=x^13

y^2*y^5=y^7

9x^19y^2(4x^3y^5)= 36x^13y^7

Final answer: 36x^13y^7

Answer:

BBBBB!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

Answer:

its the letter w

Step-by-step explanation:

i got an 100 on the test

Answer:

B

Step-by-step explanation:

quadratic formula:

x = [-b ± sqrt(b^2 - 4ac)] / 2a

1. find a, b, and c

a = 1

b = -3

c = 1

2. plug values into formula

x = [3 ± sqrt(9-4•1•1)] / 2

3. simplify

x = [3 ± sqrt(5)] / 2

This is B.

Answer:

Option b) is correct

ie., [tex]x=\frac{3\pm \sqrt{5}}{2}[/tex]

Step-by-step explanation:

Given quadratic equation is [tex]x^{2}-3x+1=0[/tex]

To find the solutions of given equation:

Solution of quadratic equation [tex]ax^{2}+bx+c=0[/tex]

[tex]x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}[/tex] where a,b, are coefficients of [tex]x^{2}[/tex] and x respectively and c is constant.

From the given quadratic equation a=1, b=-3 and c=1

[tex]x=\frac{-(-3)\pm \sqrt{(-3)^{2}-4(1)(1)}}{2(1)}[/tex]

[tex]x=\frac{3\pm \sqrt{9-4}}{2}[/tex]

[tex]x=\frac{3\pm \sqrt{5}}{2}[/tex]

Therefore Option b) is correct

ie., [tex]x=\frac{3\pm \sqrt{5}}{2}[/tex]

Answer:

B) f(x) ≥ 3x + 4

g of x is less than or equal to negative one half times x minus 5

Step-by-step explanation:

hope it helps

Answer:

The Answer is B.

f(x) ≥ 3x + 4

g(x) ≤ -1/2x - 5

Hope This Helps!

The equation [tex]r=\sqrt\frac{V}{3.14h}[/tex] can be used to find the radius.

Step-by-step explanation:

Given,

Volume of large can;

V=πr(r)h

V=πr²h

Dividing both sides by πh

[tex]\frac{V}{\pi h}=\frac{r^2\pi h}{\pi h}\\\\\frac{V}{\pi h}=r^2\\\\r^2=\frac{V}{\pi h}[/tex]

Taking square root on both sides

[tex]\sqrt{r^2}=\sqrt{\frac{V}{\pi h}}\\r=\sqrt\frac{V}{\pi h}[/tex]

Putting π=3.14

[tex]r=\sqrt\frac{V}{3.14h}[/tex]

The equation [tex]r=\sqrt\frac{V}{3.14h}[/tex] can be used to find the radius.

Keywords: volume, square root

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Answer:

Part 1) Equation of a perpendicular line is [tex]y=\frac{2}{3}x+4[/tex]

Part 2) Equation of a parallel line is [tex]y=-\frac{3}{2}x+\frac{21}{2}[/tex]

Step-by-step explanation:

Part 1) Find the equation of the line that is perpendicular to the given line and passes through the point (3, 6).

we have

[tex]y=-\frac{3}{2}x-3[/tex]

The slope of the given line is [tex]m=-\frac{3}{2}[/tex]

Remember that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of the slopes is equal to -1)

so

The slope of the perpendicular line to the given line is equal to

[tex]m=\frac{2}{3}[/tex]

Find the equation of the line in point slope form

[tex]y-y1=m(x-x1)[/tex]

we have

[tex]m=\frac{2}{3}[/tex]

[tex]point\ (3,6)[/tex]

substitute

[tex]y-6=\frac{2}{3}(x-3)[/tex]

Convert to slope intercept form

[tex]y=mx+b[/tex]

Isolate the variable y

[tex]y-6=\frac{2}{3}x-2[/tex]

[tex]y=\frac{2}{3}x-2+6[/tex]

[tex]y=\frac{2}{3}x+4[/tex]

Part 2) Find the equation of the line that is parallel to the given line and passes through the point (3, 6).

we have

[tex]y=-\frac{3}{2}x-3[/tex]

The slope of the given line is [tex]m=-\frac{3}{2}[/tex]

Remember that

If two lines are parallel, then their slopes are the same

so

The slope of the parallel line to the given line is equal to

[tex]m=-\frac{3}{2}[/tex]

Find the equation of the line in point slope form

[tex]y-y1=m(x-x1)[/tex]

we have

[tex]m=-\frac{3}{2}[/tex]

[tex]point\ (3,6)[/tex]

substitute

[tex]y-6=-\frac{3}{2}(x-3)[/tex]

Convert to slope intercept form

[tex]y=mx+b[/tex]

Isolate the variable y

[tex]y-6=-\frac{3}{2}x+\frac{9}{2}[/tex]

[tex]y=-\frac{3}{2}x+\frac{9}{2}+6[/tex]

[tex]y=-\frac{3}{2}x+\frac{21}{2}[/tex]

Answer:

x = 10 and x = -10

Step-by-step explanation:

Given the function

[tex]f(x)=\dfrac{5x^2+3x+6}{x^2-100}[/tex]

This function is undefied when the denominator equals to 0. Find these values for x:

[tex]x^2-100=0\\ \\(x-10)(x+10)=0\\ \\x-10=0\ \ \text{or}\ \ x+10=0\\ \\x=10\ \ \text{or}\ \ x=-10[/tex]

This means that vertical lines x = 10 and x = -10 are vertical asymptotes (the graph of the function f(x) cannot meet these lines because this function is undefined at x = 10 and x = -10)

Answer:

3:100, 3/100

Step-by-step explanation:

Answer:

3:100

Step-by-step explanation:

well 3 can go into both equally so it be 3: 100 and that cant be reduce anymore

Point (-2 , 4) lies in the 2nd quadrant

Point (3 , -1) lies in the 4th quadrant

Point (-1 , 0) lies on the negative part of the x-axis

Point (1 , 2) lies in the 1st quadrant

Point (-3 , -5) lies in the 3rd quadrant

Step-by-step explanation:

Let us revise the signs of the coordinates in each quadrant

Now let us check the points

Point (-2 , 4) ⇒ red point

∵ x = -2 and y = 4

∵ x-coordinate is negative and y-coordinate is positive

∴ Point (-2 , 4) lies in the 2nd quadrant

Point (3 , -1) ⇒ blue point

∵ x = 3 and y = -1

∵ x-coordinate is positive and y-coordinate is negative

∴ Point (3 , -1) lies in the 4th quadrant

Point (-1 , 0) ⇒ green point

∵ x = -1 and y = 0

∵ x-coordinate is negative and y-coordinate is zero

∴ Point (-1 , 0) lies on the negative part of the x-axis

Point (1 , 2) ⇒ purple point

∵ x = 1 and y =2

∵ x and y coordinates are positive

∴ Point (1 , 2) lies in the 1st quadrant

Point (-3 , -5) ⇒ black point

∵ x = -3 and y = -5

∵ x and y coordinates are negative

∴ Point (-3 , -5) lies in the 3rd quadrant

Look to the attached graph for more understand

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Answer:

About  1.5873 ounces of sodium chloride is needed.

Step-by-step explanation:

Here, the amount of sodium chloride needed = 45 grams

Now, by the conversion of units, we  know

1 gram = 0.0352739619 ounce

⇒ 45 grams = 45 x 0.0352739619 ounce = 1.5873 ounces

Hence, about  1.5873 ounces of sodium chloride is needed.

Answer:

D

Step-by-step explanation:

Find (f + g)(x) then evaluate (f + g)(9)

(f + g)(x) = f(x) + g(x)

= 4x - 1 + x² - 2 = x² + 4x - 3

Now substitute x = 9 into the expression

(f + g)(9) = 9² + 4(9) - 3 = 81 + 36 - 3 = 114 → D

Answer:

J.117

Step-by-step explanation:

f(x) =4x-1

if f(2)= 4(2)-1

f(2)= 8-1 = 7

f(2) = 7 equation 1

g(x) =x2-2

if g(4)= (4)2-2

g(4) = 8-2 = 6 equation 2

Now,

(f+g)(9) =?

subtitute equation 1 and 2

(7+6)(9)=?

(13)(9)=?

13×9= 117

Hence, the answer is 117

Answer:

Step-by-step explanation:

In order to obtain the total amount that Monica was charged you should follow some steps.

How much was the net price? You can obtain this value either by clearing the x:

X * 5% = $1.50

X = $1.50 / 5%

Or by using simple rule of three:

If 5% is $1.50

Then 100% is X

So you obtain = $30

Now you just need to sum The net prices and the taxes

Net + tax = Total Charge

$30 + $1.5 = $31.5

Answer:

.08 cents rounded

Step-by-step explanation:

1.50x.05%=.075

Answer:

16=53

Step-by-step explanation:

12.9 x 14 .9 + 6= 12

f(x) = 7 is a even function

Solution:

Given that we have to find the even function

A function is even if and only if f(–x) = f(x)

Steps to follow:

Replace x with -x and compare the result to f(x). If f(-x) = f(x), the function is even.

If f(-x) = - f(x), the function is odd.

If f(-x) ≠ f(x) and f(-x) ≠ -f(x), the function is neither even nor odd.

[tex]f(x) = (x - 1)^2[/tex]

Substitute x = -x in above function

[tex]f(-x) = (-x - 1)^2[/tex]

Thus [tex]f(-x) \neq f(x)[/tex]

So this is not a even function

f(x) = 8x

Substitute x = -x in above function

f(-x) = 8(-x) = -8x

Thus [tex]f(-x) \neq f(x)[/tex]

So this is not a even function

[tex]f(x) = x^2 - x[/tex]

Substitute x = -x in above function

[tex]f(-x) = (-x)^2 - (-x) = x^2 + x[/tex]

Thus [tex]f(-x) \neq f(x)[/tex]

So this is not a even function

f(x) = 7

f(-x) = 7

Thus f(-x) = f(x)

Thus it is a even function

Answer:

A

Step-by-step explanation:

edg verified

Answer: Slope = [tex]\frac{9}{5}[/tex]

Step-by-step explanation:

Slope = [tex]\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]

[tex]x_{1}[/tex] = 2

[tex]x_{2}[/tex] = 7

[tex]y_{1}[/tex] = 1

[tex]y_{2}[/tex] = 10

Substituting into the formula , we have :

Slope = [tex]\frac{10 - 1}{7 - 2}[/tex]

Slope = [tex]\frac{9}{5}[/tex]

Answer:

3 feet in 5s

Step-by-step explanation:

Consider the complete question is,

'If the relationship between distance y in feet and time x in seconds is proportional, which rate is represented by y/x=0.6?

a. 3 feet in 5s

b. 3 feet in 9s

c. 10 feet in 6s

d. 18 feet in 3s'

If y = 3 ft, x = 5 sec

[tex]\frac{y}{x}=\frac{3}{5}=0.6[/tex]

If y = 3 ft, x = 9 sec

[tex]\frac{y}{x}=\frac{3}{9}=0.33...[/tex]

If y = 10 ft, x = 6 sec

[tex]\frac{y}{x}=\frac{10}{6}=1.66666...[/tex]

If y = 18 ft, x = 3 sec

[tex]\frac{y}{x}=\frac{18}{3}=6[/tex]

Hence, the required rate would be 3 feet in 5s

Answer:

  x < -4 ∪ x > 4

Step-by-step explanation:

The absolute value function is shifted down 3 units. The solution space is values of x where y = |x|-3 is greater than 1. The solution is shown in red in the attachments, and the left and right (dashed) sides of the inequality are shown in blue.

__

I personally prefer to rewrite the inequality so the comparison is to zero. That is done in the second attachment, which rewrites it to ...

  |x| -4 > 0

by subtracting 1 from both sides. It is often easier to read the values of x-intercepts than it is to read the coordinate values where lines cross each other.

Answer:

[tex]A=100(0.990655512)^t[/tex]

Step-by-step explanation:

[tex]A=100(\frac{1}{2})^{\frac{t}{73.83}}[/tex]

It does say an approximate equation so we could play with law of exponents a little especially if you don't like that fraction in the exponent.

[tex]A=100(\frac{1}{2})^{\frac{1 \cdot t}{73.83}}[/tex]

[tex]A=100(\frac{1}{2})^{\frac{1}{73.83}t}[/tex]

[tex]A=100((\frac{1}{2})^{\frac{1}{73.83}})^t[/tex]

I'm going to put (1/2)^(1/73.83) into my calculator.

This gives me approximately: 0.990655512.

[tex]A=100(0.990655512)^t[/tex]

So maybe that is what you are looking for.

Please let me know.

A gram of the isotope of iridium is present. Then after t day, the equation is [tex]\rm A = 100*(0.990655)^t[/tex].

Half-Life is defined as the time required by a radioactive substance to disintegrate into a different substance. This was discovered in 1907 by Ernest Rutherford.

Given

Iridium-192 is an isotope of iridium and has a half-life of 73.83 days.

[tex]\rm A= 100(0.5)^\frac{t}{73.83}[/tex]

If A gram of the isotope of iridium is present. Then after t day, the amount will be

[tex]\rm A= 100(0.5)^{\frac{t}{73.83}}\\[/tex]

On simplifying, we have

[tex]\rm A = 100((0.5)^{\frac{1}{73.83}})^{t} \\\\A = 100*(0.990655)^t[/tex]

Thus, the required equation is [tex]\rm A = 100*(0.990655)^t[/tex].

More about the half-life link is given below.

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Answer:

  -x^4y^2 +7x^3y^3 +2x^2y^4 -3xy^5

Step-by-step explanation:

The powers of x in the terms of the given expression are ...

  4, 3, 1, 2

so, we want to swap the last two terms to put them in the desired order:

  -x^4y^2 +7x^3y^3 +2x^2y^4 -3xy^5

Step-by-step explanation:

To compare fractions, they need to have the same denominator.  So you need to find the least common multiple (LCM) of 10, 3, and 4.

To find the LCM, first write the prime factorizations.

3 = 3

4 = 2²

10 = 2×5

The LCM is the product of each factor raised to its highest exponent.

LCM = 2²×3×5

LCM = 60

Now we rewrite each fraction with this new denominator.

9/10 = 54/60

2/3 = 40/60

2/4 = 30/60

Answer:

You need to convert the numbers into the same format.

Step-by-step explanation:

If you want to keep them in fraction form, you need to find the least common multiple. This means the smallest number that can be divided by all of the denominators. For this example, the number would be 60, because 60/10 is 6, 60/3 is 2, and 60/4 is 15. Now that we know this, you need to make every denominator 60. You do this by multiplying the numerator by whatever you needed to multiply the denominator by to get 60. For example, you need to multiply 10 by 6 to get sixty, so you would multiply 9 by 6 as well. You would repeat this pattern with all of the numbers, getting 54/60 (9/10), 40/60 (2/3), and 30/60 (2/4). This makes it very easy to tell which is the larger number.

If you don't want to do all of that, you can use decimal form. To find what each number would be in decimal form, divide the numerator by the denominator. For example, 9 divided by ten is .9, 2 divided by 3 is .66..., and 2/4 is .5.

Answer:

These are the true statements:

1) There are more than 18 different combinations of features for sale.

2)The number of combinations of red notebooks is the same as the number      of combinations that are yellow.

3)Adding one more color option would increase the number of different combinations by 4.

Step-by-step explanation:

Here, we need combination of three different things color, binding and divider.

Firstly, from color we have 5 options, so there are 5 different ways of choosing color.

Next, 2 options for binding, so 2 ways to choose the binding.

Thirdly, 2 more ways to choose divider.

So, total number of ways = 5×2×2 = 20 ways.

This is because when we fix one of the things, say color to be red, then there are 2 ways for binding and 2 ways for divider. so, we get a total of 4 different combinations.

Now, as we are having 5 different colors, total ways = 5×4 = 20.

Here, it is obvious that combinations of notebooks of any color are same(4 red, 4 blue, 4 green, 4 yellow, 4 black)

Suppose, we have one more color option then total ways = 6 ×4 =24 ways.

⇒Adding one more color option would increase the number of different combinations by 4.

Answer:

B,C,E

Step-by-step explanation:

I got it right on the test

hope this helps

Good evening ,

Answer:

Look at the photo below for the answer.

:)

Answer:

The height variable should be represented by the y-axis on a scatterplot.

Step-by-step explanation:

The explanatory variable and independent variable are similar terms. When a variable is not at all dependent on any factor then it is called an explanatory variable. So, it must be plotted along the independent axis i.e. x-axis.

On the other hand, a response variable is an alternate term of the dependent variable and in our case height is a corresponding dependent variable of explanatory variable age.

Therefore, the height variable should be represented by the y-axis on a scatterplot. (Answer)

Answer:Height

Step-by-step explanation:

The median of given data is 42.5

And

The median after replacing 42 with 92 is 44.5

Step-by-step explanation:

A median is the middle value of the data that divided the data in two equal parts

Given data is:

46 43 39 48 52 40 42 98 20 38

First of all, the data has to arranged in ascending order

20, 38, 39, 40, 42, 43, 46, 48, 52, 98

As the number of values is even, n=10, the median will be the average of middle two numbers

20, 38, 39, 40, 42, 43, 46, 48, 52, 98

[tex]Median = \frac{42+43}{2}\\=\frac{85}{2}\\=42.5[/tex]

The median is 42.5

Now,

Replacing 42 with 92

20, 38, 39, 40, 92, 43, 46, 48, 52, 98

The data has to be re-arranged

So,

20, 38, 39, 40, 43, 46, 48, 52, 92, 98

As the number of values is same,

[tex]New\ median = \frac{43+46}{2}\\=\frac{89}{2}\\= 44.5[/tex]

Hence,

The median of given data is 42.5

And

The median after replacing 42 with 92 is 44.5

Keywords: Median, mode

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