Please help me with this question

Answer:

y = - [tex]\frac{1}{2}[/tex] x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = [tex]\frac{0-2}{4-0}[/tex] = [tex]\frac{-2}{4}[/tex] = - [tex]\frac{1}{2}[/tex]

The line crosses the y- axis at (0, 2) ⇒ c = 2

y = - [tex]\frac{1}{2}[/tex] x + 2 ← equation of line

Answer:

x + 2y = 4

Step-by-step explanation:

The y intercept (where it crosses the y axis) is (0,2)

Another point on the line is (4,0)

We can find the slope from these two points

m = (y2-y1)/(x2-x1)

   = (0-2)/(4-0)

   =-2/4 = -1/2

We have the slope and the y intercept

y = mx+b  where m is the slope and b is the y intercept

y = -1/2x +2

We want the equation of the line in standard form

Ax +By =C

Add -1/2x to each side

1/2x +y =  -1/2x +1/2x +2

1/2x +y =   2

Multiply by 2 because we do not want fractions

2(1/2x +y) = 2* 2

x + 2y = 4

#2

Step-by-step explanation:

it is opening downwards so the number multiplying the function must be negative (in this case it is -2)

Answer:

y = -2(x -­ 1)² + 2

Step-by-step explanation:

recall that the vertex form of a quadratic equation is :

y = a(x - h)² + k, where (h, k) is the coordinate of the vertex (i.e maxima point)

from the graph we can see that the vertex is at x = 1, y = 2

hence the answers that are valid would have h = 1 and k = 2

right away by observing the answers, we can see that the last 2 choices have h = (-1) and so these are NOT the answers.

To decide between the first 2 choices, we observe from the given graph, that when x=0, y=0.

The only choice which satisfies this is the 2nd option

Proof:

for y = -2(x -­ 1)² + 2, when x = 0,

y = -2(0 -­ 1)² + 2

y = -2(-­ 1)² + 2

y = -2(1) + 2 = -2 + 2 = 0 (Proven to be valid)

Sanity check: check the first choice

y = (x ­- 1)² + 2

when x = 0,

y = (0- 1)² + 2

y = 1 + 2 ≠ 0 (not the answer)

Answer:

75

Step-by-step explanation:

Geometric means you should think common ratio (words like multiplication or division).

First term=3

Second term=15

What can you multiply to first to give you second term? Please say 5! Yes 5! Why? Because 3*5=15.

So 5 is called the common ratio.  5 is the number that you will multiply to a term to find the very next term.

So the third term would be 15*5=75

The next value in the geometric sequence is 75.

A geometric sequence is a sequence of numbers in which each term can be found by multiplying the previous term by a fixed, non-zero number called the common ratio. In this case, to find the next value in the sequence, we need to determine the common ratio. We can divide the second term (15) by the first term (3) to find the common ratio:

Common ratio = 15/3 = 5

Now that we know the common ratio is 5, we can find the third term in the sequence:

Third term = Second term × Common ratio = 15 × 5 = 75

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Answer:

Part 1) The price of a USB memory, stick selling at a 21% discount of its market price (m) ------> 0.79m

Part 2) The price or a CD that sells for 21% more than the amount (m) needed to manufacture the CD -----> 1.21m

Part 3) The final value of a painting after its initial value m, increases by 2/5 -----> [tex]\frac{7}{5}m[/tex]

Part 4) The total number of markers that Nancy has if she gives away 2/5 of her m markers to Amy ----->  [tex]\frac{3}{5}m[/tex]

Step-by-step explanation:

Part 1) The price of a USB memory, stick selling at a 21% discount of its market price (m)

we know that

100% is the market price m

100%-21%=79%

79%=79/100=0.79

so

The price of a USB memory with a 21% discount of its market price is equal to multiply m by 0.79

(0.79)*m=0.79m

Part 2) The price or a CD that sells for 21% more than the amount (m) needed to manufacture the CD

we know that

100% is the amount m

100%+21%=121%

121%=121/100=1.21

so

The price or a CD that sells for 21% more than the amount (m) is equal to multiply m by 1.21

(1.21)*(m)=1.21m

Part 3) The final value of a painting after its initial value m, increases by 2/5

we know that

100% is the initial value m

2/5=0.40=40%

100%+40%=140%

140%=140/100=1.4

Convert to fraction

1.4=14/10=7/5

so

The final value is equal to m multiplied by 7/5  

[tex]\frac{7}{5}m[/tex]

Part 4) The total number of markers that Nancy has if she gives away 2/5 of her m markers to Amy

we know that

100% is the number of makers m

2/5=0.40=40%

100%-40%=60%

60%=60/100=0.6

Convert to fraction

0.6=6/10=3/5

The total number of markers that Nancy has is equal to multiply m by 3/5

so

[tex]\frac{3}{5}m[/tex]

[tex]g(2b)=5\cdot2b+3=10b+3[/tex]

The value of G(2b) = 10b + 3.

Given:

G(x) = 5x+3

To find:

the value of G(2b).

For G = 5x + 3

substitute x with 2b [tex]$=5 \cdot 2 b+3$[/tex]

Simplifying the above equation, we get

[tex]$5 \cdot 2 b+3: \quad 10 b+3$[/tex]

G(2b) = 10b + 3

Therefore, the value of G(2b) = 10b + 3.

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Answer:

Step-by-step explanation:

David, if the problem came with possible answer choices, you need to share those choices.

The graph of f(x) = | x-1/4 | +4 stems from the graph of y = |x|, the absolute value function.  Draw this function; its vertex is at (0, 0) and it's v-shaped, opening upward.

First, translate this graph 1/4 unit to the right.  Second, translate the resulting graph 4 units upward.  Done.

Answer: A for plato users or edmentum

Step-by-step explanation:

Answer:

Option D) cos52 = x/24

Step-by-step explanation:

In this problem angle of 38 degrees and angle of 52 degrees are complementary angles

so

38°+52°=90°

therefore

cos(38°)=sin(52°)

we know that

see the attached figure with letters to better understand the problem

In the triangle ABD

cos(38°)=24/x ----> The cosine of angle of 38 degrees is equal to divide the adjacent side to angle of 38 degrees by the hypotenuse

Remember that

cos(38°)=sin(52°)

so

sin(52°)=24/x

In the right triangle ABC

cos(38°)=x/34 ----> The cosine of angle of 38 degrees is equal to divide the adjacent side to angle of 38 degrees by the hypotenuse

In the right triangle ABD

Applying the Pythagoras Theorem

[tex]BD=\sqrt{x^{2}-576}\ units[/tex]

[tex]cos(52\°)=(\sqrt{x^{2}-576})/x[/tex]----> The cosine of angle of 52 degrees is equal to divide the adjacent side to angle of 52 degrees by the hypotenuse

Answer:

[tex]\large\boxed{\sin\dfrac{2\pi}{3}=\dfrac{\sqrt3}{2}}[/tex]

Step-by-step explanation:

[tex]\sin\dfrac{2\pi}{3}=\sin\bigg(\pi-\dfrac{\pi}{3}\bigg)\\\\\text{use}\ \sin(x-y)=\sin x\cos y-\sin y\cos x\\\\=\sin\pi\cos\dfrac{\pi}{3}-\sin\dfrac{\pi}{3}\cos\pi\\\\\text{use the table from the attachment}\\\\\sin\pi=0\\\\\cos\dfrac{\pi}{3}=\dfrac{1}{2}\\\\\sin\dfrac{\pi}{3}=\dfrac{\sqrt3}{2}\\\\\cod\pi=-1\\\\\text{subtitute:}\\\\=(0)\left(\dfrac{1}{2}\right)-\left(\dfrac{\sqrt3}{2}\right)(-1)=\dfrac{\sqrt3}{2}[/tex]

The value of sin 2π/3 will be;

⇒ √3 / 2

The combination of numbers and variables by using operations addition, subtraction, multiplication and division is called Mathematical expression.

Given that;

The expression is,

⇒ sin 2π/3

Now,

Since, The expression is,

⇒ sin 2π/3

⇒ sin 2×180/3

⇒ sin 120°

⇒ sin (90 + 30)°

⇒ cos 30°

⇒ √3 / 2

Thus, The value of sin 2π/3 = √3 / 2

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Answer:

c.  (5,-2), (3, 1), (4,2).

Step-by-step explanation:

The solutions are in the dark red area, with some on the continuous blue line but none on the red dotted line.

The only option that has only solutions for the system is option C.

Each inequality has a region of solutions defined by the shaded areas, such that the double shaded area represents the region of points that are solutions for both inequalities at the same time.

So we just need to see from the options, which ones belong to the double shaded area.

We can see that the only option that has all the points belonging to the double shaded area is option C, with the points:

(5, - 2), (3, 1), (4, 2)

While in the other 3 options we can find at least one point that is not a solution for the system, these are:

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Answer:

[tex]\large\boxed{x^2-6x+9+x^2+2x-15=2x^2-4x-6}[/tex]

Step-by-step explanation:

[tex]x^2-6x+9+x^2+2x-15\qquad\text{combine like terms}\\\\=(x^2+x^2)+(-6x+2x)+(9-15)\\\\=2x^2-4x-6[/tex]

Answer:

The answer is a translation of 2 units to the left and 7 units up

Step-by-step explanation:

we know that

In the rule for the translation of a rectangle

(x, y) → (x – 2, y + 7).

the term (x-2) means a translation of 2 units to the left  

the term (y+7) means a translation of 7 units up

Therefore,

The answer is a translation of 2 units to the left and 7 units up....

Answer:

28.27 mm squares.

Step-by-step explanation:

Total Surface area of the cone is given by the circular base and the curved part of the cone. This means that there are a total of 2 parts of the shape. The following 2 expressions have to be added in order to gain the total surface area:

1) Surface Area of Cone (without base) = π*r*s.

2) Area of Circle = π*r^2.

It is given that r = 2 mm and s = 2.5 mm. Plugging in the values gives:

Total Surface Area of the Diamond Ring = π*2*2.5 + π*2^2.

Total Surface Area of the Diamond Ring = 5π + 4π = 9π = 28.27 mm squares.

This means that the total surface area is 28.27 mm square (correct to 2 decimal places)!!!

Answer:

pi/2

Step-by-step explanation:

Arccos(tan(0))

Arccos( 0) since tan(0)=0

Arccos(0)=pi/2 since cos(pi/2)=0 and the restricted domain of cosine is [0,pi].

Answer:

1

Step-by-step explanation:

First of all go one step at a time. Find tan(0). For this question, you can use your calculator.

Tan(0) = 0 That's because the opposite side has a length of 0 and the tangent's definition is

Tan(x ) = opposite side / adjacent side. The opposite side and the adjacent side are part of the same length. There is no real opposite side.

=========

Now you are down to cos-1(0)

If you put that into your calculator like this

2nd Function

cos-1(

0

)

=

You will get 1

Answer:

P(S or T)= 3/4

Step-by-step explanation:

Given:

S and T are mutually exclusive events

find P(S or T)

P(S or T)= P(S) + P(T)

             = 1/3 +5/12

             =4+5/12

              =9/12

               =3/4 !

Answer:

The value of P(S or T) is 3/4.

Step-by-step explanation:

It is given that S and T are mutually exclusive events. It means intersection of S and T is 0.

[tex]S\cap T=0[/tex]

[tex]P(S\cap T)=0[/tex]

We need to find the value of  P(S or T). It means we have to find the probability of union of S and T.

[tex]P(S\cup T)=P(S)+P(T)-P(S\cap T)[/tex]

Substitute the given values in the above formula.

[tex]P(S\cup T)=\frac{1}{3}+\frac{5}{12}-(0)[/tex]

[tex]P(S\cup T)=\frac{4+5}{12}[/tex]

[tex]P(S\cup T)=\frac{9}{12}[/tex]

[tex]P(S\cup T)=\frac{3}{4}[/tex]

Therefore the value of P(S or T) is 3/4.

Answer:

(-2,-12), (-1,-6), (0,-3) and (1,-3/2)

Step-by-step explanation:

g(x) = -3(1/2)^x

Putting values of x

x     g(x)

-2    -3(1/2)^-2 = -12

-1     -3(1/2)^-1 = -6

0     -3(1/2)^0 = -3

1      -3(1/2)^1 = -3/2

Now, making the graph we will plot

(-2,-12), (-1,-6), (0,-3) and (1,-3/2)

The graph is shown in figure below.

To find g(x) values, substitute the x-values into the function equation. Calculate the result which gives you the y-value (g(x)) for each x-value. Plot these pairs of values on a graph to show the function's behavior.

To find the corresponding values of the function g(x), you need to substitute the x-values given into the function equation of g. For instance, if g(x) is a linear function given by y=3x+9, when x=1 the value of g(x) is 3*1+9=12, and this is the y-coordinate of the point plotted on the graph. Repeat this process with all the given x-values to get the corresponding y-values. Afterwards, plot all the (x, g(x)) pairs on the coordinate grid. The points are found at the intersection of the x and y (g(x)) values on the grid. After plotting, you can connect the points to give a graphical representation of the dependence of y on x.

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1/6 is smaller than 1/2

4/7 is greater than 1/2

1/6 is smaller than 4/7

b) 5/9 is greater than 3/8

have a great day!

Answer:

Hi!

a)

b)

Step-by-step explanation:

If you are having problems doing the comparision, the best form to check if a number is greater or smaller than another, you can divide the fraction and obtain the decimal form.

Example:

1/6 ≅ 0.16.

4/7 ≅ 0.57.

1/2 = 0.50.

3/8 ≅ 0.37.

5/9 ≅ 0.55.

Now, you can replace the numbers and check again:

b)

Answer:

Option B is correct.

Step-by-step explanation:

(x+2<5) U (x-7>-6)

Solving and finding the value of x and then taking Union of both answers

x+2 < 5

x < 5-2

x < 3

x-7 > -6

x > -6 + 7

x > 1

So, x < 3 or x > 1

{x|x<3 or x > 1}

Option B is correct.

Answer:

The correct answer is third option 3 : 4

Step-by-step explanation:

It is given that,Jamaal has 20 models of planes and cars

Also he has  three times as many cars as planes

Let 'x' be the number planes.

Then number of cars = 3x

Total number of models = x + 3x = 4x

To find the ratio of his cars to total models

cars : total models = 3x : 4x

 = 3 : 4

Therefore the correct answer is third option 3 : 4

Answer:

3:4 is the answer and give the guy above me brainliest

Step-by-step explanation:

Answer:

The given equation is NOT linear.

Step-by-step explanation:

5x^4+5y = 9

The given equation is NOT linear.

Reason:

A linear equation is defined as the equation for the straight line, where the degree of variables involved is always equal to 1.

But in the given equation :

Degree if x = 4

and degree of y = 1

As degree of x≠ 1 so, the given equation is not linear,

Answer:

10(3/2x-22+3y)

Step-by-step explanation:

Answer:

[tex] 2x + 3 [/tex]

the sum of twice the number x and the number 3

[tex] x ^ 2 + y ^ 2 [/tex]

the sum of squares of the number x and the number y

[tex] 5x-2y [/tex]

the difference between five times more than the number x and twice the number y

[tex] x + 3x [/tex]

the sum of the number x and the number of triple x

[tex] \dfrac {ab} {3} [/tex]

the quotient of the product of the number a and the number b by the number 3

[tex] \dfrac {4x} {3y} [/tex]

the quotient of the product of the number 4 and the number x by the triple number y

[tex] \dfrac {m ^ 2} {n} +5 [/tex]

the sum of the quotient of the square of the number m by the number n and the number 5

[tex] 4-x [/tex]

the difference between the number 4 and the number x

[tex] p + 8q [/tex]

the sum of the number p and the product of the number 8 by the number q

[tex] n-6 [/tex]

the difference between the number n and the number 6

Answer:

1/8

Step-by-step explanation:

i added and combined like terms and got 1/8

Answer:   [tex]x[/tex] ≈ [tex]\±0.782[/tex]

Step-by-step explanation:

You need to solve for "x" in order to find its value.

 First, you need to apply the Negative exponent rule. This is:

[tex]a^{-n}=\frac{1}{a^n}[/tex]

 Then:

[tex]3x^{- 4}= 8[/tex]

[tex]\frac{3}{x^4}=8[/tex]

Now you can solve for "x":

 [tex]3=8x^4[/tex]

[tex]\frac{3}{8}=x^4[/tex]

Remember that:

[tex]\±\sqrt[n]{a^n}=\±a[/tex]

Then, you get:

[tex]\±\sqrt[4]{\frac{3}{8}}=x[/tex]

 [tex]x[/tex] ≈ [tex]\±0.782[/tex]

Answer:

Last choice. d.

Step-by-step explanation:

We are given the first term and the sixth term.

The first term is [tex]a_1=-9[/tex].

The sixth them is [tex]a_6=a_1r^5=-9216[/tex].

Let's solve for the common ratio, r.

[tex]-9r^5=-9216[/tex]

Divide both sides by -9:

[tex]r^5=1024[/tex]

Take the fifth root of both sides:

[tex]r=1024^{\frac{1}{5}}[/tex]

[tex]r=4[/tex]

So the common ratio is 4.

[tex]a_1=-9[/tex]

[tex]a_2=-9(4)=-36[/tex]

[tex]a_3=-9(4)^2=-144[/tex]

[tex]a_4=-9(4)^3=-576[/tex]

[tex]a_5=-9(4)^4=-2304[/tex]

[tex]a_6=-9(4)^5=-9216[/tex]

Answer:

The average power use is 806 watts....

Step-by-step explanation:

We all know that there are 31 days in May.

To find the total number of hours in 31 days, multiply the hours of one day by 31.

31*24 = 744 hours

Now we have given 600.kilowatt

To find average power, simply divide the given kilowatt by the total number of hours in 31 days.

= 600/744

Average power = 0.806 kilowatt

Since they have asked for the answer in watts we will convert kilowatt into watts.

We know that 1000 watts = 1 kilowatt, so we will multiply 0.806 by 1000 to convert it into watts

= 0.806*1000

= 806 watts.

Therefore the average power use is 806 watts....

Answer:

- Hope 18.92

- Casey 19.25

- Daniela 20.2

Explanation:

divide the points/basketball games

Answer:

Hope, Casey, Daniela

Step-by-step explanation:

Since,

[tex]\text{Points per game}=\frac{\text{total scores}}{\text{Total number of games}}[/tex]

Given,

Daniela scored 101 points in 5 basketball games,

Daniela's His points per game = [tex]\frac{101}{5}=20.20[/tex]

Casey scored 154 points in 8 games,

Casey's points per game = [tex]\frac{154}{8}=19.25[/tex]

Hope scored 227 points  in 12 games.

Hope's points per game = [tex]\frac{227}{12}\approx 18.92[/tex]

∵ 18.92 < 19.25 < 20.20

Hence, the order of the players by their points per game from least to greatest,

Hope, Casey, Daniela

Answer:

The angle of descent of Artemis' plane is 6°

Step-by-step explanation:

Let

x -----> the angle of descent of Artemis' plane

we know that

The tangent of angle x is equal to divide the opposite side to angle x (altitude) by the adjacent side to angle x (horizontal distance)

see the attached figure to better understand the problem

so

tan(x)=2.2/22

x=arctan(2.2/22)=5.71°

Round to the nearest degree

x=6°

Answer:

The angle of descent of Artemis' plane is 6°

Step-by-step explanation:

Answer:

A. 4 units

Step-by-step explanation:

Answer: B: 4 units

Step-by-step explanation:

the guy above me almost got it, lol, love u

[tex]\bf \begin{cases} -7x+8y=1\\ 4x-8y=20 \end{cases}\qquad \qquad \stackrel{\textit{using elimination}}{ \begin{array}{llll} -7x~~\begin{matrix} +8y \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=1\\ ~~4x~~\begin{matrix} -8y \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=20\\ \cline{1-1}\\ -3x~\hfill =21 \end{array}}[/tex]

[tex]\bf x=\cfrac{21}{-3}\implies \blacktriangleright x=-7 \blacktriangleleft \\\\\\ \stackrel{\textit{substituting in the 2nd equation}}{4(-7)-8y=20}\implies -28-8y=20\implies -8y=48 \\\\\\ y=\cfrac{48}{-8}\implies \blacktriangleright y = -6 \blacktriangleleft[/tex]

The solution to the system is (x, y) = (-2.2, -1.8) the y-coordinate of the solution is -1, the correct option is A.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.

We are given that;

The equations;

–7x + 8y = 1

4x – 8y = 20

Now,

To solve this system of equations, we can use the elimination method. We can multiply the first equation by 2 and add it to the second equation to eliminate y:

-14x + 16y = 2 +4x - 8y = 20

-10x = 22

x = -2.2

Now that we have x, we can substitute it into either equation to solve for y. Let’s use the first equation:

-7x + 8y = 1 -7(-2.2) + 8y = 1 15.4 + 8y = 1 8y = -14.4 y = -1.8

Therefore, the solution to the system of equations will be (x, y) = (-2.2, -1.8) the y-coordinate will be -1.

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Answer:

Step-by-step explanation:

[tex]\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\=========================[/tex]

[tex]\text{We have}\ y=\dfrac{1}{5}x+10\to m_1=\dfrac{1}{5}\\\\\text{Therefore}\ m_2=-\dfrac{1}{\frac{1}{5}}=-5.\\\\\text{Put the value of a slope and the coordinates of the point (-3, 5)}\\\text{to the equation}\ y=mx+b:\\\\5=-5(-3)+b\\5=15+b\qquad\text{subtract 15 from both sides}\\-10=b\to b=-10\\\\\text{Finally:}\\\\y=-5x-10[/tex]

Answer:

 m    = (-9-3)/(1+7)

Step-by-step explanation:

To find the slope given two points we use

m = (y2-y1)/(x2-x1)

m    = (-9-3)/(1--7)

 m    = (-9-3)/(1+7)

m = -12/8

   = -3/2

Slope m has a form of,

[tex]m=\dfrac{\Delta{y}}{\Delta{x}}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Your points say A and B have a form of,

[tex]A(x_1,y_1),B(x_2,y_2)\longrightarrow A(-7,3),B(1,-9)[/tex]

We can populate our slope formula to,

[tex]m=\dfrac{-9-3}{1-(-7)}=\dfrac{-12}{8}=\boxed{-\dfrac{3}{2}}[/tex]

The slope of the line that passes through point A and B is m = -3/2

Hope this helps.

r3t40