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Misha Larkins [42]
3 years ago
6

Y= 1/2x-4 and y= -2x-9 what is the solution of equations

Mathematics
1 answer:
azamat3 years ago
8 0

Answer:

(x,y)=(-2,-5)

Step-by-step explanation:

y=1/2x-4

y=-2x-9

(y=) 1/2x-4=-2x-9

1/2x +2x=-9+4

1/2x +4/2x=-5

5/2x=-5

5x=-5*2

5x=-10

x=-2

x=-2

y=-2x-9=-2*(-2)-9=4-9=-5

(x,y)=(-2,-5)

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Which equation represents a circle with the same radius as
sattari [20]

Answer :

(x+1)^2+(y-1)^2=4^2 and (x+1)^2+(y-1)^2=16

Step-by-step explanation:

Given : A circle with the same radius as  the circle shown but with a center at (-1.1).

To find : Which equation represents a circle ?

Solution :

The equation of a circle with center (h,k) and radius r is given by :

(x-h)^2+(y-k)^2=r^2

Here, we are given (h,k)=(-1,1)

and radius r=4 units

So, equation of circle will be :

(x-(-1))^2+(y-1)^2=4^2

(x+1)^2+(y-1)^2=4^2

or (x+1)^2+(y-1)^2=16

Therefore, the required equations of circle are

(x+1)^2+(y-1)^2=4^2 and (x+1)^2+(y-1)^2=16

7 0
3 years ago
Roy planted corn on 1/5of his land. If he planted45 acres of corn, how many acres of land doeshe have?(A) 90(B) 112 (1/2)(C) 135
melisa1 [442]

Correct option is C. He has 225 acres of land .

Let the Number of acres of land Roy have = x

As he planted corn on  1/5  of his land,

Number of acres of his land planted with corn =  1/5  × Number of acres of land Roy have

=  x/5

As he planted 45 acres of his land with corn,

⇒ x/5​

 = 45

⇒x = 45 × 5

⇒x = 225

Therefore, number of acres of land Roy have is   225  .

To learn more about fraction from given link

brainly.com/question/78672

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4 0
1 year ago
HEELP WILL AWARD BRAINLIEST AND GIVE 5 STARS AND 10 POINTS I JUST NEED AN ANSWER STAT
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Hi so if you can put the side ac away for sec and look at sides ab bc  you can see the ab is  15 In. And that Side Bc is 22 inches 15 +22 = 37 round it off to 39 that is the answer ac is 39 inches hope i helped

6 0
3 years ago
Factorise x^2-y^2-2x+6y-8
Talja [164]
X^2 - y^2 - 2x + 6y - 8 
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<span>= (x - 1)^2 - (y - 3)^2 </span>
<span>= [(x - 1) - (y - 3) ] [(x - 1) + (y - 3)] </span>
<span>= (x - 1 - y + 3) ( x - 1 + y - 3) </span>
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3 0
3 years ago
Which is the greatest measure of the given data? 4, 8, 4, 7, 5, 4, 9, 146, 6, 4, 13, 8, 11, 6, 6, 5 *
Rufina [12.5K]

Answer:

Don't copy that link it will hack you.

Step-by-step explanation:

But the answer is 3. Median the median is 146.

Mode is 142

Mean is 146

3 0
2 years ago
Read 2 more answers
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