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qaws [65]
3 years ago
8

Are the following two ratios proportional?

Mathematics
1 answer:
aalyn [17]3 years ago
6 0
8 Broken toys : 42 total toys = 1 Broken toy : 6 total toys

20 Broken toys : 105 total toys = 4 Broken toy = 21 total toys.

Answer: No: They are not proportional.
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Any one know how to find the roots of an equation?
soldier1979 [14.2K]
So what you do is
make into ax^2+bx+c=0 form

add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
x=\frac{-(-2)+/- \sqrt{(-2)^{2}-4(1)(9/2)} }{2(1)}
x=\frac{2+/- \sqrt{4-(36/2)} }{2}
x=\frac{2+/- \sqrt{4-(18)} }{2}
x=\frac{2+/- \sqrt{-14} }{2}
x=\frac{2+/- \sqrt{-14} }{2}
x=1+/- \frac{\sqrt{-14} }{2}
x=1+/- \frac{\sqrt{14} \sqrt{-1}}{2}
x=1+/- \frac{\sqrt{14} i }{2}
x=1+/- \frac{ i \sqrt{14} }{2}

answer is C



6 0
3 years ago
Martin can travel 174 miles in 3 hours. At this rate, how far can he travel in 7.
Blizzard [7]

Answer:

I believe the answer is 406 miles.

Let me know of this is the correct answer

7 0
3 years ago
Which of these professionals most directly uses geometry?
notka56 [123]
Good Morning!
<span>air traffic controller
</span>

The most cited professional who uses geometry is the air traffic controller. This professional needs to calculate routes, distances and times traveled in order to avoid accumulation of aircraft at the time of landing, for example.
8 0
3 years ago
How can you use the properties of operations to evaluate<br> this expression?<br> 18 + 4(28)
nirvana33 [79]

Answer:

Well on of the properties states that unless there are parenthesis, you multiply and divide first then you add and subtract. So, first we multiply 28*4 and that leaves use with 112, now if there is no more multiplication, division, or parentheses, and there's not. We can continue all we do is add 18+112 and we get our answer of 130.

6 0
3 years ago
Read 2 more answers
HELP URGENT I AM TIMED PLEASE SOLVE AND EXPLAIN YOUR ANSWER DUE IN 5 MINUTES :)
Ratling [72]

Answer:

njblhgkc dggh,bn bhjvbhj,n hg cfxzedsetxdrycfuvgibkhjnm

Step-by-step explanation:

8 0
3 years ago
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