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Mrac [35]
4 years ago
7

Two fifths of the fish in Gary's fish tank are guppies onefourth of the guppies is red what fraction of the fish in Gary's tank

are red guppies what fraction of the fish in Gary's tank are not red guppies show your work
Mathematics
1 answer:
krek1111 [17]4 years ago
6 0
<span>How many fish are there in all? We need that to answer the question.</span>
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840 and 360 in lowest ratios
Alexxandr [17]
  840     :    360 
(÷120)   :  ( ÷120)
    7        :      3

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Answer: 7 : 3
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3 0
3 years ago
One morning, John drive 5 hours before stopping to eat. After lunch, he. increased his speed by 10 mph. If he completed a 500-mi
Marrrta [24]
So  he drove 5hrs, before lunch, now, he was going at speed, say "r", after he ate, he sped up by 10mph, so, his rate is whatever "r" is, plus 10, or " r + 10 ", after lunch

we know the whole trip took 10hrs, so, is 5hrs before lunch and 5hrs after lunch

we also know the whole trip was 500miles, so if he drove, say "d" miles before lunch, after lunch he drove the slack after lunch, or " 200 - d "

recall, your d = rt, distance = rate * time

\bf \begin{array}{lccclll}&#10;&distance&rate&time\\&#10;&-----&-----&-----\\&#10;\textit{before lunch}&d&r&5\\&#10;\textit{after lunch}&500-d&r+10&5&#10;\end{array}&#10;\\\\\\&#10;&#10;\begin{cases}&#10;\boxed{d}=5r\\&#10;500-d=(r+10)5\\&#10;----------\\&#10;500-\boxed{5r}=(r+10)5&#10;\end{cases}&#10;\\\\\\&#10;\cfrac{500-5r}{5}=r+10\implies 100-r=r+10

and I'm sure you know what that is
6 0
3 years ago
Find the radius and diameter of circle A, if the endpoints of the radius<br> are (-2, -1) and (6,4).
AleksandrR [38]

Step-by-step explanation:

length \: between \: ( - 2, - 1) \: and \: (6,4) \\  =  \sqrt{(x _{1} - x  _{2} )² + (y _{1}  - y _{2})²  }  \\  =  \sqrt{( -  2 - 6)²+ ( - 1 - 4)²}  \\  =   \sqrt{64 + 25}  \\  =  \sqrt{100}  \\  = 10 \: units \\ radius = 10 \: units \\ diameter = 2 \times radius \\ d = 2 \times 10 \\ d = 20 \: units

8 0
3 years ago
A dance instructor wants 8 costumes to be yellow and 24 costumes to be blue. What is the ratio of blue costumes to yellow costum
const2013 [10]
The ratio of blue to yellow costumes is 24:8 and then you simplify to 3:1
8 0
3 years ago
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12. Which equation has no solution?
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B 24a-22=-4(1-6a) has no solution
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