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3 years ago

What is the solution to this systems of liner equations y-x=6 y+x=-10

1 answer:

3 0

The solution is the point where the two lines intersect (are equal) so y=y and we can say:

6-x=-10-x upon adding x to both sides:

6=-10

This is never true so there is no solution to this system of equations. And for this to be true the two lines must be parallel and have different y-intercepts...

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URGENT

harina [27]

<span>Just list all elements that belong both to A and to B
A ∩ B = {6,12}</span>

3 0

3 years ago

I will give brainliest<br>Help me

r-ruslan [8.4K]

Answer:

See Explanation

Step-by-step explanation:

$\frac{mass \: of \: earth}{mass \: of \: human} = \frac{5.97 \times {10}^{24} }{6.35 \times {10}^{1} } \\ \\ = 0.94015748 \times {10}^{24 - 1} \\ \\ = 0.94015748 \times {10}^{23} \\ \\ = 9.4\times {10}^{22} \\ \\ \therefore \: mass \: of \: earth \\ =( 9.4\times {10}^{22} ) \times mass \: of \: human$

6 0

2 years ago

Plz help me solve this question ASAP without using algebra, Thank u‼️

VashaNatasha [74]

Let cost of 1 box of red pen = x

Let cost of 1 box of black pen = y

Gaga bought 5 red box and her sister 4 black box then total cost is given by

5x+4y

Given that total cost was $44

so equation will be 5x+4y=44...(i)

After exchange

Gaga= 4 red box + 1 Black box

Sister = 1 red box + 3 Black box

then cost for Gaga = 4x+1y

cost for sister = 1x+3y

Given that cost for both after exchange is same so we get

4x+1y = 1x+3y

or 4x-1x = 3y-1y

or 3x = 2y

or 3x/2=y ...(ii)

plug (ii) into (i)

5x+4y=44

5x+4(3x/2)=44

5x+12x/2=44

5x+6x=44

11x=44

x=4

Now plug value of x into (ii)

y=3x/2=3*4/2=12/2=6

Hence cost of 1 box of red pen = $4

And cost of 1 box of black pen = $6

---

If you want to get solution without solving both equations then just graph both equations and find the intersection point.

You will see that graph intersect at (4,6) which gives x=4, y=6

6 0

2 years ago

Which of the following is the perimeter of a square with a side of 9 cm?

zubka84 [21]

The answer to this question is 36cm.

5 0

2 years ago

Question 2 An exponential model y = a.6 passes through the points (0,9) and (3,243). What are the values of a and b?

weqwewe [10]

Answer:

a = 9, b = 3

Step-by-step explanation:

The exponential function is

y = a $b^{x}$

Find a and b by using the points it passes through

Using (0, 9 ) then

9 = a $b^{0}$ ( $b^{0}$ = 1 )

a = 9

y = 9 $b^{x}$

Using (3, 243 ) then

243 = 9b³ ( divide both sides by 9 )

27 = b³ ( take the cube root of both sides )

b = $\sqrt[3]{27}$ = 3

y = 9 $(3)^{x}$ ← exponential equation

8 0

2 years ago