Answer: a = 2,84
Step-by-step explanation:
34(4a + 12) = 21 a =
136a + 408 = 21
136a = -408 + 21
136a = - 387
a = <u>- 387 </u>
136
a = - 2,84
I think it’s 2/7=8/28 1/4=7/28
So the ration is 4:7
The total of houses is 32 new houses. What I did was I divided 32 by 4:
32/4 = 8
That means that the ratio (4:7) would be multiplied by 8 (only the :7 part):
7 * 8 = 56
There are 56 old houses (the ratio is now 32:56)
<em>Thank you and can you please give me brainly :3</em>
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Well, there are 8 boys and the brother is one of them so 1 is 12.5% of 8 and out of 10 girls, there 1 is the sister and 1 out of 10 is 10%. Now we multiply the percentages to get the answer 1/80
Answer:
-a will be greater than -b because for example, when a=2 and b=5, -a=-2 and -b=-5
