If 4x²+ y²= 40 and xy = 6 , find the value of (2x − y).

Answers

Answer 1

answer is 2x+y=±8

hopes this helps u

Answer 2

Step-by-step explanation:

first find the value of X and y from above data then put that data for question

If 4x+ Y= 40 And Xy = 6 , Find The Value Of (2x Y).

Related Questions

Does the ratio 5 1/2 : 1 1/2 has the unit rate of 3 2/3

Answers

Based on the ratio, 5¹/₂ : 1¹/₂, the unit rate can be found to be so the statement is TRUE.

How to find the unit rate?

To find the unit rate of a ratio, you should divide the first number in the ratio by the second number in the ratio.

When given the ratio, 5¹/₂ : 1¹/₂, therefore, the unit rate is:

= 5¹/₂ ÷ 1¹/₂

= 11/2 ÷ 3/2

= 11/2 x 2/3

= 22 / 6

= 3.6667

= 3²/₃

In conclusion, the unit rate of 5¹/₂ : 1¹/₂ is 3²/₃.

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Call bag contains six red tiles and 15 yellow towels. lelia removes two red towels how many yellow tiles should she remove so that the ratio of red tiles to yellow towels in the bag stays equivalent to 6:15

Answers

5 yellow tiles should be removed.

The original ratio of red tiles to yellow tiles as per the question :Ratio = 6:15. Now, after removal of red tiles, the numerator of ratio will become = 6 - 2. The numerator of new ratio will be 4. For yellow tiles, let the number of yellow tiles removed be x. So, the denominator or new number of yellow tiles will be 15 - x.

Now, relating the two ratio -

6:15 = 4:(15 - x)

Performing cross-multiplication to find the value of x.

6 × (15 - x) = 4 × 15

Performing multiplication on both the Left Hand Side and Right Hand Side

90 - 6x = 60

6x = 90 - 60

Performing subtraction to find the value of x

6x = 30

x = [tex]\frac{30}{6}[/tex]

Performing division to find the value of x

x = 5

So, the number of yellow tiles to be removed is 5.

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The complete question is -

A bag contains 6 red tiles and 15 yellow tiles. Lilia removes 2 red tiles. How many yellow tiles should she remove so that the ratio of red tiles to yellow tiles in the bag stays equivalent to 6 : 15?

The phone company A Fee and Fee has a monthly cellular plan where a customer pays a flat monthly fee
and then a certain amount of money per minute used on the phone. If a customer uses 360 minutes, the
monthly cost will be $86. If the customer uses 610 minutes, the monthly cost will be $123.5.
A) Find an equation in the form y = mx +b, where x is the number of monthly minutes used and y is
the total monthly of the A Fee and Fee plan.
Answer: y =
B) Use your equation to find the total monthly cost if 945 minutes are used.
Answer: If 945 minutes are used, the total cost will be
dollars.

Answers

The equation in the form y = mx +b, where x is the number of monthly minutes used and y is the total monthly of the A Fee and Fee plan is: y = (3/20)x + 32 and the total monthly cost is $173.75.

Equation

a. Equation

Slope = ( $123.5-$86)/(610-360)

Slope=37.5/250

Slope= 3/20

y = mx + b

Solve for "b"

$123.5 = (3/20)610 + b

$123.5  = 91.5 + b

b=$123.5-$91.5

b = 32

Equation:

y = (3/20)x + 32

b. Total cost

Total cost= (3/20)945+32

Total cost= 141.75+32

Total cost= $173.75

Therefore the equation in the form y = mx +b, where x is the number of monthly minutes used and y is the total monthly of the A Fee and Fee plan is: y = (3/20)x + 32 and the total monthly cost is $173.75.

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A cube has a volume of 197 meters cubed (197 m3) What is the approximate value of one edge of the cube? The approximate value of one edge of the cube is meters. Round your answer to the nearest hundredth. What is the approximate area of one face of the cube? The approximate area of one face of the cube is meters. Round your answer to the nearest hundredth.

Answers

The edge length and area of the face of the cube are 5. 82 meters and 203 square meters respectively

How to determine the value

The formuka for the volume of a cube is expressed as;

Volume = a^3

Where 'a' is the length of it's edge

From the information given, we have that the volume of the cube has a value of 197 cubic meters.

Now, substitute the value of the volume

We have;

197 = a^3

Take the cube root of both sides

a = 5. 82 meters

The formula for area of the face of a cube is given as;

Area = 6a ^2

Area = 6(5.82)^2

Area = 6(33. 85)

Area = 203 square meters

Thus, the edge length and area of the face of the cube are 5. 82 meters and 203 square meters respectively

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18. Simplify the complex fraction.

Answers

Answer:

B.

4*2=8

5*3=15

Answer:

A is 3\5; B is 8\3; C is 3\8; D is 5\3

Step-by-step explanation:

divide or multiply
i don't know  if these are right bc I didn't do them in a long time.

Write 5 600 000 in standard form.

Answers

Step-by-step explanation:

5.6 × 10⁶

hope it's helpful

help me pls !!! I’ll give good pts

Answers

Answer:

0.32×0.5=0.16

At lunch, Kira eats either a burrito containing 490 milligrams of sodium or a peanut butter sandwich containing 700 milligrams of sodium. Her doctor told her to reduce her sodium to no more than 4,000 milligrams per week. Which inequality represents x, the number of microwave burritos, and y, the number of peanut butter sandwiches, she can eat each week?

490x + 700y < 4000
490x + 700y ≤ 4000
490x + 700y > 4000
490x + 700y ≥ 4000

Answers

Answer:  490*x + 700*y ≤ 4000

Answer:

its b

Step-by-step explanation:

help me understand this

Answers

Answer:

2

Step-by-step explanation:

According to the table, when x changes 7 units, y will change 14 units

x          y

-28     -54

-21.     -40

-14       - 26

-7          - 12

0           2

y-intercept is where the line intersects y axis, which x = 0

so y-intercept is 2

What is the answer to this problem?

Answers

Answer:

bsosbsodndodnelsnsodnendk

0.82, 45/50 ,80%
14. The numbers ordered from lowest to highest are

Answers

Answer:

Step-by-step explanation:

0.82, 45/50 ,80%

14. The numbers ordered from lowest to highest are

0.82 = 0.82

45/50 = 0.9

80% = 4/5 = 0.8

80%0.8245/50

Solve the inequality and express your answer in interval notation.
x^2 + 12x +7 < 0

Answers

Solution:

B. [tex](-6-\sqrt{29},-6+\sqrt{29})[/tex]

Hope this helps! If so, lmk! Thanks and good luck!

Answer: (-6-[tex]\sqrt{29}[/tex], -6+[tex]\sqrt{29}[/tex]) ==> D

Step-by-step explanation:

x^2 + 12x +7 < 0

x^2+12x+36-29<0

(x+6)^2-29<0

(x+6)^2<29

x+6<[tex]\sqrt{29}[/tex]

x<-6+[tex]\sqrt{29}[/tex]

x+6>-[tex]\sqrt{29}[/tex]

x>-6-[tex]\sqrt{29}[/tex]

(-6-[tex]\sqrt{29}[/tex], -6+[tex]\sqrt{29}[/tex]) ==> D

-6-[tex]\sqrt{29}[/tex] and -6+[tex]\sqrt{29}[/tex] aren't included in the solution since if these values are plugged in to x^2 + 12x +7, the expression will equal 0. That's not supposed to happen. The expression is supposed to be LESS than 0.

PLSSS HELP ANSWER, THE QUESTION IS IN THE SCREENSHOT

Answers

Answer:

Option 3

Step-by-step explanation:

When y is positive, there is always increase.

Eliminate options 1 and 2.

When y is negative, there is always decrease.

Eliminate option 4.

PLEASE HELP! URGENT!!


Find the range of values of [tex]k[/tex] for which the line [tex]y=kx+k[/tex] intersects the curve [tex]x^{2} +y^{2} =8k\\[/tex]

Answers

Answer:

x-

[tex]x = - {y}^{2} + 8k[/tex]

What is the measure of the angle shown below?

Answers

Answer:57 degrees

Step-by-step explanation:

It is just below the 60-degree line. And it is less than 90 degrees.

Justin operates an orange juice stand. Justin started out with 48 oranges. On monday, he used 3/4 of the orange. On Tuesday he used 1/12 as many oranges as Monday. How much more oranges did he sell on Monday compared to Tuesday.

Answers

Answer:

75% of 48 = 36 oranges used on M. 36/12=3, 3 is 1/12 of 36, so he sold 33 more oranges on M then on T when he only sold 3.

In the relationship y=3x, if x is reduced by 1/3, how will y change? Responses It will triple.

Answers

If x is reduced by 1/3, 3x will be reduced by 1/3 x 3 = 1

Because y = 3x, y will also be reduced by 1.

Question 4 (1 point)
Choose all the terms in the expression
5x⁴ - 7x³ + x + 2

(below are multiple choice options)

5
5x⁴
-7x³
1
X
2​

Answers

Answer: there are 4 terms and they are 5x^4, -7x^3, x, and 2

Step-by-step explanation:

a souvenir of the eiffel tower is scaled 1/80 at inch to 1 foot. if the total height of the tower is 1,069 feet, the approximate height of the souvenir of the eiffel tower to the nearest tenth is

Answers

well, let's convert 1 foot to inches, that'd be 12 inches per foot.

so we know that the souvenir is 1/80 in, to the actual of 12 inches on the Eiffel Tower, if the Tower itself is 1069 feet high, namely (1069)(12) inches, how high is the souvenir?

[tex]\begin{array}{ccll} \stackrel{in}{souvenir}&\stackrel{in}{actual}\\ \cline{1-2} \frac{1}{80}&12\\[1em] x&(1069)(12) \end{array}\implies \cfrac{ ~~ \frac{1}{80} ~~ }{x}~~ = ~~\cfrac{12}{(1069)(12)}\implies \cfrac{ ~~ \frac{1}{80} ~~ }{\frac{x}{1}}~~ = ~~\cfrac{12}{12828} \\\\\\ \cfrac{1}{80}\cdot \cfrac{1}{x}=\cfrac{1}{1069}\implies \cfrac{1}{80x}=\cfrac{1}{1069}\implies 1069=80x\implies \cfrac{1069}{80}=x\implies 13.4\approx x[/tex]

25 points plus brainliest

Answers

Answer:

The answer is C.

(0,4) and (3,0)

Step-by-step explanation:

To find the x, substitute 0 to the y.

* 4x + 3(0) = 12

> 4x = 12

> x = 3 (3,0)

To the y, substitute 0 to the x.

* 4(0) + 3y = 12

> 3y = 12

> y = 4 (0,4)

I hope you get this right!

Answer:

(0,4) and (3,0)

Step-by-step explanation:

Hope this helps :D

Find the quotients. Answer as whole numbers or fractions.

2/5 ÷ 3/4 =

9/4 ÷ 3/4 =

5/7 ÷ (-1/-3) =
(whole fraction is negative)

-5/3 ÷ 1/6 =

if its only ‘-‘ at the numerator that means only the numerator is negative )

Answers

Answer:

ANSWERS

1st Question: 8/15

2nd Question: 3

3rd Question: -2 1/7

4th Question: -10

Used a Calculator :3 hope it helps

1st Question: 8/15
2nd Question: 3
3rd Question: -2 1/7
4th Question: -10

if pi is 3.142 what is the area of a circle of radius 3.5 cm

Answers

Answer:

38.4895cm²

Step-by-step explanation:

The area=3.142×(3.5cm)²=38.4895cm²

Answer:

The Area of circle is 34.49cm

Step-by-step explanation:

⟼ Area of a circle = [tex] \sf \pi {r}^{2} [/tex]

where,

π = 3.142r = radius = 3.5cm

⟼ Area = (3.142)(3.5)(3.5)

⟼ Area = (3.142)(12.25)

⟼ Area = 38.4895cm

An article is advertised for 262.50$ inclusive of 5% gst. find the original price

Answers

Answer: If we are looking at percentages you want to find what 262.50 is 5% of what number using the percentage rates equation, the original price would be, $525.00! Hope this helps!

andrea runs 4 miles every day, but she wants to increase her distance in order to run a 26-mile marathon. she decides to add 2 miles each day to her distance until she achieves her goal. if she starts with 6 miles today, how many miles will she have run, in total, by the time she achieves her 26-mile goal?

Answers

If she starts with 6 miles today and add 2 miles each day to her distance until she achieves her goal and  then she has to run 176 miles in total to achieve her 26 miles goal.

Given,

Total distance for the marathon = 26 miles

Distance she add each day =2

She starts with 6 miles

Then,

Equation of nth term in the arithmetic sequence

[tex]t_{n}=a+(n-1)d[/tex]

Substitute the values and find the value of n

26=6+(n-1)2

26=6+2n-2

26=4+2n

2n=22

n=11

To find the total distance she run to achieve her 26 miles goal, we have to apply the sum of n terms of arithmetic sequence,

[tex]S=\frac{n}{2}[2a+(n-1)d]\\ S=\frac{11}{2}[2(6)+(11-1)2]\\ S=\frac{11}{2}[12+20]\\ S=\frac{11}{2}[32]\\ S=176[/tex]

If she starts with 6 miles today and add 2 miles each day to her distance until she achieves her goal and  then she has to run 176 miles in total to achieve her 26 miles goal.

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in a study reported in the news, "researchers found that adults who used headphones with a screen, for more than one hour per day were at a 13% higher risk for hearing loss compared to those who used headphones with their screens less than one hour. the research team randomly surveyed 3,506 people in california about their screen/headphone behaviors, as well as information about ear infections and other noises a person may encounter at work and in daily life. participants were also given physical check-ups, including a hearing test and a physical exam of the ears and eyes. the increased likelihood of hearing loss remained, even after the researchers adjusted for risk factors such as construction noise and inner ear anatomy. the researchers found no increased risk among people who used headphones with a screen less than one hour per day.

Answers

Headphones that go over your ears can also damage your hearing if you use them too long or play music too loudly.

What is decibel explain with examples?

A decibel is a unit used to measure how loud something is using a logarithmic formula. It is also used to describe the degree of loudness. This is an example of when you listen to your music at the loudest volume that your iPod will allow.

If you use over-the-ear headphones for an extended period of time or listen to loud music, you could end up damaging your hearing. They simply pose less of a risk than earphones do: The level of a sound can be increased by 6 to 9 decibels when the source is inside your ear canal, which can result in some major issues.

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Alejandro and some friends are going to the movies. At the theater, they sell a bag of popcorn for $3.50 and a drink for $4. How much would it cost if they bought 3 bags of popcorn and 8 drinks? How much would it cost if they bought p bags of popcorn and d drinks?

Total cost, 3 bags of popcorn and 8 drinks:______
Total cost, p bags of popcorn and d drinks:______

Answers

Answer:

Step-by-step explanation:

Using a proportional relationship, the costs are given as follows:

3 bags of popcorn and 8 drinks: $42.05.p bags of popcorn and d drinks: C(p,d) = 3.35p + 4d.

What is a proportional relationship?

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

A proportional relationship may also involve multiple variables, as is the case in this problem, in which the cost is a function of the number of bags of popcorn p and the number of drinks d.

The constants are the prices of each product, hence the function for the total cost of p bags of popcorn and d drinks is given by:

C(p,d) = 3.35p + 4d.

Hence, for 3 bags and 8 drinks, the cost is:

C(3,8) = 3.35(3) + 4(8) = $42.05.

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a swimming pool has two pipes coming in. one fills the pool in four hours, the other in six hours. an outlet pipe empties the pool in five hours. the outlet pipe is accidentally left open. in how many hours is the pool full?

Answers

The pool is full for 4 hrs.

Add the rates of filling of the 2 filling pipes and

subtract the rate of draining of the emptying pipe;

1st pipe's rate: ( 1 pool filled ) / ( 3 h);

2nd pipe's rate: ( 1 pool filled ) / ( 6 h );

3rd pipe's rate of emptying: ( 1 pool emptied ) / ( 4 h);

Let t = the time in hrs to fill the pool with all 3 pipes open

1/3+16-1/4 = 1/t;

Multiply both sides by 24t;

t = 4 hrs

volume is a measure of occupied three-dimensional space. it's miles frequently quantified numerically using SI derived units (consisting of the cubic meter and liter) or by way of diverse imperial devices (inclusive of the gallon, quart, cubic inch).

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Graph the line with the equation y= - 1/2x + 7

Answers

Answer:

Graph the line using the slope and y-intercept, or two points.

Slope: 1^2

y-intercept: (0,7)

(XY)

(07)

(28)

The angle shown has the same measure as an angle drawn on paper. Order the steps for copying the angle from the paper using a compass and straightedge.

Answers

The order of the steps for copying the angle from the paper using a compass and a straight edge are;

5. Label the original angle as ‹A. On a separate piece of paper, draw a horizontal ray directed to the right, using the straight edge. Label the left endpoint D

4. Draw an arc centered at the vertex A that passes through both sides of ‹A using the compass. Label the points of intersection B and C.

1. Using the same compass setting, draw an arc centered at point D that intersects the ray and looks like the arc through B and C. Label the intersection of the arc and the ray as E.

3. Adjust the compass to the length BC. Draw an arc with radius BC centered at point E that intersects the arc through E. Label the point of intersection F.

2. Draw [tex] \overrightarrow{DF} [/tex]. You now have [tex] \angle A \cong \angle D [/tex]

How can the order of copying an angle be found?

The steps for copying an angle includes;

Drawing a line segment on which the angle is to be copied, and label the endpoint as D

Drawing an arc centered on the vertex, A, of the original angle, to intersect with the rays of the angle at B and C.

With the same compass width, place the compass at D and draw an arc to intersect the ray from D at point E.

With radius BC draw an arc from point E intersecting the arc drawn through E at F

Join point D to F to complete the construction of a copy of ‹A, such that, [tex] \angle A \cong \angle D [/tex]

The order of the steps based on the appearance of the step in the question are therefore;

Step 5 → Step 4 → Step 1 → Step 3 → Step 2

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If f, g, and h are all positive number which of the following is NEVER true?

Answers

Answer:

C) fgh = 0

==================================

Since all numbers are positive, their sum or product can be a positive number but never negative or zero.

A) f + g = 2h, both sides are positive → true

B) fh = 1, both sides are positive → true

C) fgh = 0, at least one of the numbers should be zero → never true

D) gh = 23, both sides are positive → true
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