how do i do xy=4
2x-y+2=0
i'm solving by substition

Answers

Answer 1

so I think the answer is very difficult ask to someone else

Step-by-step explanation:

xy=4

2x-y+2=0

Answer 2
Is it x+y=4 or x-y=4? I can help you solve in comments.

Related Questions

an app pays creators $0.02 per view, if mary get 60,000 viwes how much money will she make? They also some times pay $0.03 per view, how much would she make then?
-IzzyArtist

Answers

Answer:

Making 0.02 per veiw getting 60,000 veiws would earn her 1200$. At 0.03 per veiw she would make 1800$ assumimg she got 60,000 veiws

Step-by-step explanation:

What is L equal?
8+3l=l

Answers

Answer:

l=-4

Step-by-step explanation:

3l=l-8 3l-l=-8 2l=-8 l=-4

Use a graphing calculator to graph f(x) = x+cos(kx). Use calculus to determine which values of k lead to a function with no local maxima or minima. What conclusions can be drawn?

Answers

Answer:

Below, you can see the graph of the function:

f(x) = x + cos(k*x)

for different values of k, as follows:

red: k = 1

green: k = 2

orange: k = 0.

Now let's find the values of k such that our function does not have local maxima nor local minima.

First, remember that for a given function f(x), the local maxima or minima points are related to the zeros of the first derivate of f(x).

This means that if:

f'(x0) = 0.

Then x0 is a maxima, minima or an inflection point.

Then if a function is such that the f'(x) ≠ 0 , ∀x, then this function will not have local maxima nor minima.

Now we have:

f(x) = x + cos(k*x)

then:

f'(x) = 1  - k*sin(k*x)

This function will be zero when:

1 = k*sin(k*x)

1/k = sin(k*x)

now, remember that -1 ≤ sin(θ) ≤ 1

then if 1/k is smaller than -1, or larger than 1, we will not have zeros.

And this will happen if -1 < k < 1.



The ratio of dogs to cats at a pet store is 3:4 Which of these shows the
possible numbers of dogs and cats in the pet store?

Answers

Answer:

Step-by-step explanation:

6/8

12/16

24/32

Those are some samples. You have to give us choices.

g(x) = f(x - 4) + 5
Transformation(s):

Answers

To find the transformation, compare the function to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.
Vertical compression

What is 0 divided by 0

Answers

..............0................

Answer:

0

Step-by-step explanation:

You can’t divided 0 by 0 so it’s 0

Solve for y: 2x-y = 3...halp meeeh pls. thhhhxxx!

Answers

Answer: Subtract 2x from both sides of the equation. Multiply each term in −y=−3−2x - y = - 3 - 2 x by −1 - 1 . Multiply (−y)⋅−1 ( - y ) ⋅ - 1 .

Step-by-step explanation:

Answer:

y= -3

Step-by-step explanation:

to find y- intercept, substitute x= 0

2 x 0 - y = 3

y= -3

4x= x + 18 X= whattttttttttt​

Answers

Answer:

4x=x+18x=

We move all terms to the left:

4x-(x+18x)=0

We add all the numbers together, and all the variables

4x-(+19x)=0

We get rid of parentheses

4x-19x=0

We add all the numbers together, and all the variables

-15x=0

x=0/-15

x=0

Step-by-step explanation:

what is the measure of the angles in the triangle shown below.​

Answers

Answer:

x = 35 degrees

Step-by-step explanation:

All angles in a triangle add up to 180 degrees.

Therefore, 48 + 97 + x = 180

Solve for x.

Thus, x = 180 - 48 - 97.

x = 35 degrees

What is the value of the function at x = 3? Enter your answer in the box.

Answers

Answer:

4

Step-by-step explanation:

When x is 3, y is 4

To do this, go to the right 3 units and go up until the line intersects with a grid point

At three, y is 4

Answer:

4

Step-by-step explanation:

i took the test

(7TH GRADE LEVEL) Read the instructions and answer questions 16-18

Answers

Answer:

Equations

Step-by-step explanation:

16:

7 · (-3) = -21

-3 · 7 = -21

-21 ÷ 7 = -3

-21 ÷ (-3) = 7

17:

-4 · (-5) = 20

-5 · (-4) = 20

20 ÷ (-4) = -5

20 ÷ (-5) = -4

18:

1.5 · (-3) = -4.5

-3 · 1.5 = -4.5

-4.5 ÷ 1.5 = -3

-4.5 ÷ (-3) = 1.5

This is 7th grade?

Hope I helped :)

Answer:

16. 7 x -3= -21

    -3 x 7= -21

    -21/-3=7

    -21/7=3

17. -4 x -5= 20

    -5 x -4= 20

    20/-4=-5

    20/-5=-4

18. 1.5 x -3= -4.5

   -3 x 1.5=-4.5

   -4.5/-3=1.5

   -4.5/1.5=-3

   

Step-by-step explanation:

multiplication and division

he difference of two numbers is 841. The smaller of the numbers is 471. What is the other number?

Answers

Answer:

The answer is 1,312

Step-by-step explanation:

Trust me its correct

pls mark me as brainliest

Find the slope of the line that passes through (-3, 2) and (6, 2).

Answers

Answer:

slope = 0

Step-by-step explanation:

(-3, 2) and (6, 2)

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

remember, either x or y can be used but you have to be consistent

slope = (2-2)/(-3-6)

slope = 0/(-9)

slope = 0

Answer: no slope or 0

Step-by-step explanation:

The y-coordinates are the same for both points but the x coordinates are different. This signals a no-slope line, or a line where the slope is 0. Even if we apply the formula, which is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex], it still ends up with 0.

Please solve!! Thank you :)

Answers

Answer:

5x-1+3x+4+x+11x-21

24x-18=0

24x=18

x=3/4

AB=3/4

BC=3/4

AD=2.25 or 2 1/4

Step-by-step explanation:

IDK if it is right plz let me know if it is

a force of 10 newtons acts in a direction 75 above horizontal moving an object 15 meters from (0,0) to (15,0). What is the work done by the force?
a. 2.59 joules
b. 3.88 joules
c. 38.82 joules
d. 150.00 joules

Answers

Answer:

150 Joules

Step-by-step explanation:

Step one:

Given data

Force F= 10N

the distance is described by the coordinate =  (0,0) to (15,0)

hence the distance = 15m in the x-direction.

Step two:

Required is the work done

we know that work done is expressed as

Wd= Force* Distance

Wd= 10*15

Wd= 150 Joules

Answer:

38.82

Step-by-step explanation:

A 9 kg log is being dragged along flat ground by a 120 N force at an angle of 45°. If
the log accelerates at a rate of 0.78 m/s2, what is the normal force acting on the log?

Answers

9514 1404 393

Answer:

  3.347 N

Step-by-step explanation:

The vertical component of the dragging force is (120 N)/√2, so the net downward force is the difference between that due to gravity and the upward component of the dragging force.

  (9.8 m/s²)(9 kg) -(120 N)/√2 = 3.347 N

The normal force acting on the log is 3.347 N.

Solve 3x2 − 7x − 2 = 0. (1 point)

Answers

Answer:

x=0.571428571

Step-by-step explanation:

4-7x=0

x=0.571428571

Answer:

Step-by-step explanation:

x = 2.591

or

x = -0.257

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(x) ​= nothing ​(Simplify your ​answer.) B. ​(f​g)(x) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(​) nothing ​(Simplify your​ answer.) B. The value for ​(f​g)(​) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(x) ​= nothing ​(Simplify your ​answer.) B. ​(x) does not exist. Click to select and enter your answer(s) and then click Check Answer.

Answers

Answer:

b

Step-by-step explanation:

The following information is known about a savings account. Time = 6 years Interest rate = 1.9% Principal = $850 What amount of simple interest will be earned?

A. $16.15

B. $96.90

C. $946.90

D. $9,690.00

Answers

i believe it MIGHT be B?

Answer:

I = PRT

T = 6

P = 850

I = 1.9% = 0.019

I = (850)(0.019)(6) = 96.90 <==

Step-by-step explanation:

what is -5 1/8 * (-2 1/4)

Answers

Answer:

sorry ulit ha mahirap nag tanung

Please help me....people are just using my points and im running out.....please help me!!

Answers

Answer

I think that c would equal 4

Step-by-step explanation:

If you need the explanation, here it is:

When looking at the y part of the answer, you can see it goes up by three and that it is missing a point. This means that if the equation is linear, it goes up by one. Hope that's right!!

Which of the
following is not a
function?
PLEASE HELP
15 POINTS OR BRAINLIST

Answers

Answer:

Answer Choice D

Step-by-step explanation:

Does not pass the vertical line test but the rest of the answer choices do which makes D not a function and your solution.

Can you please make my answer the brainliest I would very much appreciate it. Thanks!

Dave bought 4 cookies at a bake sale if each cookie cost 0.85 and he paid with a twenty dollar bill how much change should he get back

Answers

Answer:

$16.60

Step-by-step explanation:

4 x 0.85 = $3.40

20 - 3.40 = 16.6

Dave should get back $16.60 in change.

Answer:

$16.6 dollars back

Step-by-step explanation:

The answer is $16.6 because 0.85 times 4 is 3.4 and 20 minus 3.4 is 16.6

Find the slope of the line that passes through (10, 9) and (1, 1).
Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

Answer:

The slope of the line that passes through (10, 9) and (1, 1) will be:

[tex]m=\frac{8}{9}[/tex]

Step-by-step explanation:

Given the points

(10, 9)(1, 1)

The slope between (10, 9) and (1, 1) is given by

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(10,\:9\right),\:\left(x_2,\:y_2\right)=\left(1,\:1\right)[/tex]

[tex]m=\frac{1-9}{1-10}[/tex]

[tex]m=\frac{8}{9}[/tex]

Thus, the slope of the line that passes through (10, 9) and (1, 1) will be:

[tex]m=\frac{8}{9}[/tex]

factorise a³ - b³ + 4a-4b

Answers

Answer:

[tex]a^3-b^3+4a-4b:\:\left(a-b\right)\left(a^2+ab+b^2+4\right)[/tex]

Step-by-step explanation:

Given the expression

[tex]a^3-b^3+4a-4b[/tex]

solving the expression

[tex]a^3-b^3+4a-4b[/tex]

as

[tex]a^3-b^3[/tex]

[tex]\mathrm{Apply\:Difference\:of\:Cubes\:Formula:\:}x^3-y^3=\left(x-y\right)\left(x^2+xy+y^2\right)[/tex]

[tex]a^3-b^3=\left(a-b\right)\left(a^2+ab+b^2\right)[/tex]

also

[tex]4a-4b[/tex]

[tex]\mathrm{Factor\:out\:common\:term\:}4[/tex]

[tex]=4\left(a-b\right)[/tex]

so the expression becomes

[tex]=\left(a-b\right)\left(a^2+ab+b^2\right)+4\left(a-b\right)[/tex]

[tex]\mathrm{Factor\:out\:common\:term\:}\left(a-b\right)[/tex]

[tex]=\left(a-b\right)\left(a^2+ab+b^2+4\right)[/tex]

Therefore,

[tex]a^3-b^3+4a-4b:\:\left(a-b\right)\left(a^2+ab+b^2+4\right)[/tex]

what does 4(3+2x) equal

Answers

Answer: 12+8x

Step-by-step explanation:

1) 4(3+2x)- Distribute the 4

4x3+4x2x t get 12+8x

steve saw 313 birds during a bird-watching trip to Yellowstone National park.he observes 15 more trumpeter swans then sand hill cranes.he saw twice as many mountain chickadees as ducky grouses.how many birds of each type did steve observe if he saw half as many trumpeter swans as ducky grouses

I need this ASAP

Answers

Answer:

82 ducky grouses, 41 trumpeter swans, 26 sand hill cranes, 164 chikadees

Step-by-step explanation:

Simplify these expressions:
1. 2x + 8x
2. (5y) - 10y
3. W + 14w - 6w
4. 4x - 5x -6

Answers

Answer:

Theyre out of order.

Step-by-step explanation:

Solve for x. I really need help!

Answers

Answer:

9

Step-by-step explanation:

Please give me brainliest.

Translate each phrase or sentence into an algebraic expression, equation or
inequality.
8) Five more than four times a number is greater than sever
9) Five less than the square root of a number r
10) 10 + 3b
1

Answers

Answer:

8. 4x + 5 > 7

9. ✓x - 5

not sure about 10, is it missing information?

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