3 years ago

'y=x+13, xy=30' ????

1 answer:

5 0

This is a simultaneous equation. its saying there are two numbers (x and y) that satisfy both equations. Rearrange the 2nd equation to get x=30/y and substitute this into the first equation to get y=(30/y) +13. solve this for y and then you can solve for x.

You might be interested in

I NEED HELP ASAP I WILL GIVE ALL MY POINTS AWAY FOR THIS

podryga [215]

Step-by-step explanation: the tangent is 8/6 because it is the opposite (8) over the adjacent (6)

8 0

3 years ago

simplify the following polynomial expression. <img src="https://tex.z-dn.net/?f=%285x%5E%7B3%7D%20%2B4x%5E%7B2%7D%20%2B6x-3%29%2

FrozenT [24]

Here is the answer hope it helps

7 0

4 years ago

How do I simplify this?

WINSTONCH [101]

Answer:

sorry ... good luck tho.....

6 0

3 years ago

Complete each congruence statement by naming the corresponding angle or side. NO LINKS!!!

Oksanka [162]

Answer:

Solution given:

<JKL=<KLS

FD=GD

5 0

3 years ago

Read 2 more answers

John is twice as old as Mary. The sum of their ages is 21. How old is Mary?

lesya692 [45]

J=john
m=mary
j is 2 times as old as mary
j=2 times m

sum is 21
m+j=21
find mary
subsitute

j=2m therefor subsitute 2m for j
m+2m=21
add like terms
3m=21
divide by 3
m=7

mary=7

*HOPE I HELPED!*

6 0

3 years ago