Answer:
The answer is 20
Step-by-step explanation:
In ratio what you do one side you do on the other side 5:4=25:20
5×5=25
4×5=20
Answer:
x=-10, y=-9. (-10, -9).
Step-by-step explanation:
-2x+2y=2
-x+3y=-17
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-2x+2y=2
-2(-x+3y)=-2(-17)
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-2x+2y=2
2x-6y=34
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-4y=36
y=36/-4
y=-9
-x+3(-9)=-17
-x-27=-17
-x=-17+27
-x=10
x=-10
The answer is x=3 next time when you are use x^2 when asking too the second power
Answer:
Step-by-step calculations:
7124 ÷ 26 = 274
<em>~Refer to attachment for work~</em>
Learn more:
Setting the equation up is probably the hardest part of this question. In this case, you're told that 3 out of every 20 trees has been cut down, which is the "ratio"; if a total of 840 trees have been cut down, there should be many more that are left since for every 20 trees, only three are cut down.
Set the equation up as:
3 / 20 = 840 / x
where x = the number of trees left standing.
Now, you just cross multiply and solve:
3 / 20 = 840 / x
3x = (840 x 20)
3x = 16800
x = 16800 / 3
x = 5600
Hope this helps!
Good luck
