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Lelu [443]
2 years ago
5

2x+3y=9

Mathematics
2 answers:
Maslowich2 years ago
4 0
This was my answer for someone else question exactly like this :)

Radda [10]2 years ago
4 0
Answer: x=3, y=1

- multiply the second equation by -2; it becomes -2x-10y= -16
- add 2x+3y=9 and -2x-10y= -16
- we get -7y=-7
- solve for y by dividing both sides by -7
- we get y=1
- now that we have found y, we pick either original equation to plug it into to get the value of x
- if we use 2x+3y=9, we plug 1 in for y to get 2x+3(1)=9
- 3x1=3, so the equation is now 2x+3=9
- to eliminate the 3, we add -3 to both sides.
- after that, we are left with 2x=6
- by dividing both sides by 2, we are left with x=3
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(c) Express the diagonal of a rectangle, D, in terms of its width, w, if the area of the rectangle is 13 square feet.
Mrrafil [7]
We are asked to express the diagonal of a rectangle in terms of the width in which the area of the polygon is equal to 13 square feet. The area of teh rectangle is equal to length times width. That is 13 = lw; diagonal using pythagorean theorem is sqrt ( l2 + w2). Thus d =  sqrt ( (13/w)2 + w2) = sqrt ( (169/w2 + w2) = sqrt ( (169 + w4)/w2) = 1/w  sqrt (169 + w4)
3 0
3 years ago
Read 2 more answers
PLEASE HELP! Solve for q(x) and r(x). (4x^3-3x^2+5x-7)/(x-2) = q(x)+ r(x)/(x-2)
Lerok [7]
Asked and answered elsewhere.
brainly.com/question/9169487
7 0
3 years ago
Question 4: What is the solution of the system? *<br> .A<br> .B<br> .C<br> .D
DedPeter [7]

Answer:

C

Step-by-step explanation:

x+4y=-12

x+7y=-15

subtract

-3y=3

y=-1

x+4(-1)=-12

x=-12+4=-8

so point is (-8,-1)

4 0
2 years ago
The expression 3/4×1/2 represents a fraction of a circle that is shaded. Which diagram shows the correct shading?
sergiy2304 [10]
Hello,

Here is your answer:

The proper answer to this question is option D.

Here is how:

First solve the equation:

3*1=3
4*2=8

Which means your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!
4 0
2 years ago
Read 2 more answers
Given the explicit rule, f(n) = 2n - 3, generate the first four terms in the sequence.
Vikki [24]

Answer: -1, 1, 3, 5

Step-by-step explanation:

F(n)= 2n-3

F(1)=2(1)-3= -1

F(2)=2(2)-3= 1

F(3)=2(3)-3= 3

F(4)=2(4)-3=5

5 0
2 years ago
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