alyssadgonzalez
23.05.2021 •
Mathematics
If two numbers are in the ratio 5 : 7 and if
5 is added to each of them, the ratio
becomes 3 : 4. Find the numbers.
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Ответ:
25 and 35
Step-by-step explanation:
Let the numbers be 5x and 7x
(5x+5)/(7x+5)=3/4
4(5x+5)=3(7x+5)
20x+20=21x +15
20-15=21x-20x
5=x
So,the numbers will be
5x=5*5 =25
7x=7*5=35
Ответ:
circumference=2*pi*r
for r=7 in
circumference=2*pi*7> 14*pi in
if 360° (full circle) has a length of 14*pi in
135°> x
x=135*14*pi/360> x=5.25*pi in> 16.49 in
the answer is
5.25*pi in or 16.49 in