Which of these systems of linear equations has no solution? A. 2 x + 8 y = 15. 4 x + 16 y = 30. 2 x minus B. y = 18. 4 x + 2 y = 38. C. 4 x + 7 y = 17. 8 x minus 14 y = 36. D. 4 x minus 3 y = 16. 8 x minus 6 y = 34.

Answer:

6 and 6

Step-by-step explanation:

In equilateral triangles, all sides are congruent so that means that BC and CA are both 6.

Answer:

BC = 6

CA = 6

Step-by-step explanation:

In an equilateral triangle all measures of side are equal.

Therefore,

AB = BC = CA = 6

Answer:

C. (2,-2), (7,-1), (12,0), (17, 1), (22,2)

Step-by-step explanation:

a p e  x , just took the quiz

Answer:

Interpreting as: x+3x+2=3+1x

Input:

x + 3 x + 2 = 3 + 1 x

Result:

4 x + 2 = x + 3

We want to find the solution set of the equation:

x + 3x + 2 = 3 + 1/x

The solution set is { (1 + √17)/8, (1 - √17)/8)}

To find this, we just need to solve the equation for x.

We start with:

x + 3x + 2 = 3 + 1/x

We simplify this to:

(x + 3x) + 2 = 3 + 1/x

4x + 2 = 3 + 1/x

4x + 2 - 3 - 1/x = 0

4x - 1 - 1/x = 0

Then we multiply by x in both sides to get:

4x^2 - x - 1 = 0

This is just a quadratic equation, the solutions are given by Bhaskara's equation.

[tex]x = \frac{-(-1) \pm \sqrt{(-1)^2 - 4*4*(-1)} }{2*4} \\\\x = \frac{1 \pm \sqrt{17} }{8}[/tex]

Then the solution set is: { (1 + √17)/8, (1 - √17)/8)}

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Answer:

141.9° (1 d.p.)

Step-by-step explanation:

Please see attached picture for full solution.

Sine rule cannot be used since there is no given angle in △PQR. Note that the bearing of Q from P (041°) equals to ∠NPQ not ∠PQR.

Answer:x+y=24  

is the respuesta

Answer:

29

Step-by-step explanation:

23

1 whole or 4/4 time's what its being compaired to then multiply to get your answer! :D stay safe!

Answer:

224

Step-by-step explanation:

Khan hehe

Answer:

7/2

Step-by-step explanation:

you got two fractions you wanna divide flip the right and multiply

7/8 times 4/1 = 7/2

7/8 divided by 1/4 is equal to 7/2.

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. In this case, we have:

(7/8) ÷ (1/4)

To find the reciprocal of 1/4, we flip the fraction, which gives us 4/1.

Now, we can multiply the first fraction by the reciprocal:

(7/8) × (4/1)

Multiplying the numerators and denominators, we get:

(7 × 4) / (8 × 1)

28/8

The fraction 28/8 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 4:

(28 ÷ 4) / (8 ÷ 4)

7/2

Therefore, 7/8 divided by 1/4 is equal to 7/2.

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Answer:

1.2 million

Step-by-step explanation:

First multiply the equation by 100. You get:  

600,000 = 100bu + 400,000

Now recognize that you can substitute:

600,000 + 100bu + 400,000

= 600,000 + (600,000)

= 1,200,000

That’s 1.2 million.

The value of the equation given is 1.2 millions.

An equation is a mathematical statement that shows that two mathematical expressions are equal.

For example, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

Given that, an equation, 6,000 = bu + 4,000, we need to find the value of the equation 600,000 + 100 bu + 400,000,

So, In the equation 1, multiply by 100, we get,

6,000 = bu + 4,000

600000 = 100 bu + 400000

Now, put this in equation 2,

600,000 + 100 bu + 400,000

= 600000 + 600000

= 1200000

= 1.2 millions

Hence, the value of the equation given is 1.2 millions.

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Answer:

(-15,12),(6,18)(12,-9)

Step-by-step explanation:

Given

A (-5, -4), B (2, 6), and C (4, -3)

Dilated from (x,y) to (3x,3y)

Required

Vertices of the dilated image

First, the scale factor has to be calculated

This is calculated as thus;

Dilation = Original * Scale Factor;

In case of (x,y) to (3x,3y)

So, we have

[tex](3x,3y) = Scale\ Factor * (x,y)[/tex]

Simplify brackets

[tex]3(x,y) = Scale\ Factor * (x,y)[/tex]

Divide both sides by (x,y)

[tex]\frac{3(x,y)}{(x,y)} = \frac{Scale\ Factor * (x,y)}{(x,y)}[/tex]

[tex]\frac{Scale\ Factor * (x,y)}{(x,y)}=\frac{3(x,y)}{(x,y)}[/tex]

[tex]Scale\ Factor =\frac{3(x,y)}{(x,y)}[/tex]

[tex]Scale\ Factor =3[/tex]

Now, the vertices of the new image can be calculated;

Using the formula: Dilation = Original * Scale Factor;

At vertex A(-5,4)

Dilation = (-5,4) * 3

Dilation = (-5*3 ,4*3)

Dilation = (-15,12)

At vertex B(2,6)

Dilation = (2,6) * 3

Dilation = (2*3 ,6*3)

Dilation = (6,18)

At vertex C(4,-3)

Dilation = (4,-3) * 3

Dilation = (4*3 ,-3*3)

Dilation = (12,-9)

Hence, the vertices of the dilated image are (-15,12),(6,18)(12,-9)

Answer:

80% of the rectangle is shaded.

Step-by-step explanation:

There are 10 rows and of those rows 8 are shaded.

Answer:

D

Step-by-step explanation:

80/10

10 20 30 40 50 60 70 80 90 100

 8 shaded so 80 percent

Answer:

x = 12

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180, that is

9x + 11 + 3x - 15 + 2x + 16 = 180, simplify left side

14x + 12 = 180 ( subtract 12 from both sides )

14x = 168 ( divide both sides by 14 )

x = 12

Answer:

Answer is option d

Answer is given below with explanations.

Step-by-step explanation:

We can prove that the two triangles are similar.

We can prove this using AA criterion of similarity.

In triangle DNC and triangle QSC

Vertically opposite angles are equal.

Then Angle QCS = Angle DCN

Two parallel lines cut by a transversal line make the alternate angles are equal.

Then Angle NDC = Angle CQS

By AA criterion of similarity

TRIANGLE DNC ~ TRIANGLE QSC

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

Answer:

The x-int.s are (2, 0) and (4, 0) so the midpoint will be (3, 0).

Answer:

Step-by-step explanation:

Answer:

Weight of the parcel in pounds = 1 pound

Step-by-step explanation:

Given:

y = 4x + 1 ---------------------Eq1

y = 3x + 2 ----------------------Eq2

Where,

x = weight of the parcel in pounds

y = total cost of the parcel

Find:

From Eq1 and Eq2, by using Substitution method.

y = 4x + 1 ---------------------Eq1

y = 3x + 2 ----------------------Eq2

So,

3x + 2 = 4x + 1

4x - 3x = 2 - 1

x = 1

Weight of the parcel in pounds = 1 pound in both services is equal

Answer: C

Step-by-step explanation:

If we know the value of the car decreases $500 for every 1,000 miles, and that the car is driven about 10,000 miles every year, that means that you need to take the total value of the car (23,000) and subtract it from the amount of money it is losing per year. Again, the car is driven about 10,000 miles per year, so that means that the car will most likely continue to be driven 10,000 miles per year. If you do the math, for one year, the value of the car will drop $5,000 ($500 x 10, because it is $500 per every 1,000 miles) So, for each year, you can just multiply the number of years by $5,000 to find out how much the vehicle has depreciated over time.

Hope this helped you and made sense! Feel free to ask me any questions you have!

Answer: 184

Step-by-step explanation:

so edmund would have a 2 by 2 cube (try and draw it out if that helps) so

2 x 2 = 4

2 x 3 = 6

2 x 4 = 8

so samuel cubeboid would be

long = 4

wide = 6

hight = 8

8 x 6 x 4 = 192 small cubes

but we are trying to find how much more samuel got

so 192 - 8 = 184

Answer:

Part B)

[tex]\displaystyle h^\prime(t)=\frac{2t^3(4-t^3)}{(t^3+2)^3}[/tex]

Part C)

[tex]h^\prime(t)=-4\pi\cot(\pi t+2)\csc^2(\pi t+2)[/tex]

Step-by-Step Explanation:

Question B)

We have:

[tex]\displaystyle h(t)=(\frac{t^2}{t^3+2})^2[/tex]

And we want to find the derivative, h‘(t).

This will require the chain rule and the quotient rule. Remember that the chain rule states:

[tex]\displaystyle \frac{d}{dx}[(u(v(x))]=u^\prime(v(x))\cdot v^\prime(x)[/tex]

And the quotient rule:

[tex]\displaystyle \frac{d}{dx}[\frac{u}{v}]=\frac{u^\prime v-uv^\prime}{v^2}[/tex]

Therefore, for our function h(t), we can let, by the chain rule:

[tex]\displaystyle v(t)=\frac{t^2}{t^3+2}\text{ and } u(t)=t^2[/tex]

Then by the quotient rule:

[tex]\displaystyle v^\prime(t)=\frac{2t(t^3+2)-t^2(3t^2)}{(t^3+2)^2}\text{ and } u^\prime(t)=2t[/tex]

Then, by the chain rule, our derivative, h’(t), is:

[tex]\displaystyle h^\prime(t)=2(\frac{t^2}{t^3+2})(\frac{2t(t^3+2)-t^2(3t^2)}{(t^3+2)^2})[/tex]

Simplify:

[tex]\begin{aligned} \displaystyle h^\prime(t)&=2(\frac{t^2}{t^3+2})(\frac{2t(t^3+2)-t^2(3t^2)}{(t^3+2)^2})\\ \\ &=\frac{2t^2}{t^3+2}(\frac{2t^4+4t-3t^4}{(t^3+2)^2})\\ \\ &= \frac{2t^2}{t^3+2}(\frac{-t^4+4t}{(t^3+2)^2}) \\ \\ &=\frac{2t^3(4-t^3)}{(t^3+2)^3} \end{aligned}[/tex]

Part C)

We have:

[tex]h(t)=2\cot^2(\pi t+2)[/tex]

Again, we will utilize the chain rule. This time, we will let:

[tex]u(t)=x^2\text{ and } v(t)=\cot(\pi t+2)[/tex]

Then differentiating gives (on the right, we will apply the chain rule a second time):

[tex]u^\prime(t)=2t\text{ and } v^\prime(t)=-\pi\csc^2(\pi t+2)[/tex]

To differentiate v(t), as mentioned, we need to apply the chain rule. We have:

[tex]v(t)=\cot(\pi t+2)[/tex]

We will let:

[tex]u_2(t)=\cot(t)\text{ and } v_2(t)=\pi t+2[/tex]

Therefore:

[tex]u_2^\prime(t)=-\csc^2(t)\text{ and } v_2^\prime(t)=\pi[/tex]

So:

[tex]v^\prime(t)=-\csc^2(\pi t+2)(\pi)[/tex]

And by simplification:

[tex]v^\prime(t)=-\pi\csc^2(\pi t+2)[/tex]

Therefore, it follows that:

[tex]h^\prime(t)=2[2(\cot(\pi t+2))(-\pi \csc^2(\pi t+2))][/tex]

So:

[tex]h^\prime(t)=-4\pi\cot(\pi t+2)\csc^2(\pi t+2)[/tex]

Answer:

x=-3/4 x=-1/4

Step-by-step explanation:

x-1=5x+2

-3=4x

x=-3/4

x+1=5x+2

-1=4x

x=-1/4

Answer:

D.) 750

Step-by-step explanation:

3000-25%= 2250

3000-2250=750

Answer:

(D) $750

Step-by-step explanation:

[tex]3000* 0.25=750[/tex]

Answer:

No

Step-by-step explanation:

When you divide by 0, you will get an undefined error. When you try to graph a divide by 0, you will get asymptotes.

Answer:

no

Step-by-step explanation:

Answer:

c/a/a

Step-by-step explanation:

Answer:

B for the first one. A is for the second one. A for the third one.

Step-by-step explanation:

A is for the second one because 4* 10^4=40,000 while 4*10^5= 400,000 and a marathon is 42,000 and 40,000 is closer to 40,000. Therefore, A.

A for the third one because 1*10^0=1 while 1*10^1=10 and a stride is 1.44 and 1 is closer to 1.44 than 10. Therefore, A.

B for the first one because if a stride is 1m and the marathon is 4*10^4 which is 40,000 then. 40,000/1 = 40,000= 4*10^4

I hope this helps!

P.S.- Just an FYI in case you don't know. An* means to multiply and a ^ means to the power.

Answer:

if 52x=1 what is the value of x

Answer:

5.

Step-by-step explanation:

Khan academy (I tried 5 and it was correct)

Answer:

Circle shape marked with radius (r) and circumference (c). Also shows formulas for the circumference and area of a circle

Radius (r)

3 cm

Diameter

6 cm

Circumference (c)

18.84956 cm

Area

28.27433 cm²

Answer: 113

Step-by-step explanation:

Answer:

x^12 * z^3 (zy^2/3 - 2) ^3/2

x to the power of 12 times z cubed (zy to the power of two thirds minus 2) exponent three halves

Step-by-step explanation:

Answer:

X=131

Step-by-step explanation:

9+40+? = 180

All triangles =180

40+9=49

180-49=131

answer is x=131

Answer:

41

Step-by-step explanation:

This is a pythagorean theorem question, which is represented by the formula [tex]a^{2} + b^{2} = c^{2}[/tex]

c always represents the hypotenuse, which is the longest side of the triangle

your two given numbers are represented by a and b

plug in the two numbers into the formula and solve. the formula should look like this: [tex]9^{2} + 40^{2} =c^{2}[/tex]

it should then be: 81+1600=[tex]c^{2}[/tex]

Add the two numbers and take the square root

If the only perimeters are that the length has to be twice the width and less than 108 meters then there are an infinite amount of possible values for width. For example: 1.0002 and 2.0004 or 4 and 8. You can use an infinite amount of decimal places and therefore have an infinite amount of values.

The largest the width can be is the limit approaching 18 and it has to be greater than 0 tho

Step-by-step explanation:

20x?=1800 20x90=1800

Sarah will earn $ 21.60 following the percentage increase

A ratio or figure stated as a fraction of 100 is called a percentage. The percent marker is frequently used to indicate it,%

The approximation error in a data value is the distinction between a precise value and one that is close to it. This error may be referred to as either an absolute error or a relative error.

The difference between the measured value and the true value, expressed as a percentage of the true value, is known as a percentage change.

Percentage change =( (| Measured Value - True Value |) / True Value ) x 100

Let the amount Sarah will get following the percentage increase be A given the available facts.

Right now, Sarah's starting salary is $ 18.00.

20% is the proportion that hourly work will rise.

Hence, the amount of increased hourly work equals 20% of Sarah's starting salary.

Simplifying results in

The increase in hourly pay is (20/100) times 18 ($3.60)

Now, the amount Sarah will get following the % increase is A = the starting sum Sarah earns + the increase in hourly pay.

And Sarah will earn A = $ 18.00 + $ 3.60 = $ 21.60 after the percentage increase.

Hence, an increase of $ 21.60 is required for hourly employment.

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Answer:

1/6 <x

Step-by-step explanation:

-2(8x - 4) < 2x + 5

Distribute

-16x +8 < 2x+5

Add 16x to each side

-16x+16x +8 < 2x+16x+5

8 < 18x +5

Subtract 5 from each side

8-5 <18x

3 <18x

Divide by 18

3/18 <x

1/6 <x

-2(8x - 4) < 2x + 5

Expand the brackets.

-16x +8 < 2x + 5

Add -2x and -8 on both sides.

-16x -2x<5-8

-18x<-3

Multiply both sides with -1 (reverse the inequalty).

18x>3

Divide 18 into both sides.

18x/18>3/18